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China Best Sales Spindle Bearing Double Row Single Row Bearing OEM 20tac47c 7806c, 7807c Angular Contact Ball Bearing CZPT with Great quality

Product Description

Specifications of Bearing

Product Description of angular contact ball bearing

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.
The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from 1 raceway to another, and a line perpendicular to the bearing axis.

     The most commonly used designs are:

  • single row angular contact ball bearings.
  • double row angular contact ball bearings.
  • four-point contact ball bearings
  • Applications:

    Single row angular contact ball bearings: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft, booster pumps, drilling platforms, food machinery, dividing head, fill welder, low-noise cooling towers, electrical and mechanical equipment, painting equipment, machine slot board, arc welding machine.
    Double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, welding machines, electric irons, square box, gravity gun, wire strippers, axle, test analysis equipment, fine chemicals, machinery.

Specifications of angular contact ball bearing 7205C

Product name bearing 7205C
Dimension 25 mm
Brand name OEM
Material chrome steel
Weight 12 g
Hardness 58~62
Quality standard SGS  ISO9

We have all kinds of bearings, just tell me your item number and quantity,best price will be offered to you soon
The material of the bearings, precision rating, seals type,OEM service,etc, all of them we can make according to your requiremen

What Are the Advantages of a Splined Shaft?

If you are looking for the right splined shaft for your machine, you should know a few important things. First, what type of material should be used? Stainless steel is usually the most appropriate choice, because of its ability to offer low noise and fatigue failure. Secondly, it can be machined using a slotting or shaping machine. Lastly, it will ensure smooth motion. So, what are the advantages of a splined shaft?
Stainless steel is the best material for splined shafts

When choosing a splined shaft, you should consider its hardness, quality, and finish. Stainless steel has superior corrosion and wear resistance. Carbon steel is another good material for splined shafts. Carbon steel has a shallow carbon content (about 1.7%), which makes it more malleable and helps ensure smooth motion. But if you’re not willing to spend the money on stainless steel, consider other options.
There are 2 main types of splines: parallel splines and crowned splines. Involute splines have parallel grooves and allow linear and rotary motion. Helical splines have involute teeth and are oriented at an angle. This type allows for many teeth on the shaft and minimizes the stress concentration in the stationary joint.
Large evenly spaced splines are widely used in hydraulic systems, drivetrains, and machine tools. They are typically made from carbon steel (CR10) and stainless steel (AISI 304). This material is durable and meets the requirements of ISO 14-B, formerly DIN 5463-B. Splined shafts are typically made of stainless steel or C45 steel, though there are many other materials available.
Stainless steel is the best material for a splined shaft. This metal is also incredibly affordable. In most cases, stainless steel is the best choice for these shafts because it offers the best corrosion resistance. There are many different types of splined shafts, and each 1 is suited for a particular application. There are also many different types of stainless steel, so choose stainless steel if you want the best quality.
For those looking for high-quality splined shafts, CZPT Spline Shafts offer many benefits. They can reduce costs, improve positional accuracy, and reduce friction. With the CZPT TFE coating, splined shafts can reduce energy and heat buildup, and extend the life of your products. And, they’re easy to install – all you need to do is install them.
splineshaft

They provide low noise, low wear and fatigue failure

The splines in a splined shaft are composed of 2 main parts: the spline root fillet and the spline relief. The spline root fillet is the most critical part, because fatigue failure starts there and propagates to the relief. The spline relief is more susceptible to fatigue failure because of its involute tooth shape, which offers a lower stress to the shaft and has a smaller area of contact.
The fatigue life of splined shafts is determined by measuring the S-N curve. This is also known as the Wohler curve, and it is the relationship between stress amplitude and number of cycles. It depends on the material, geometry and way of loading. It can be obtained from a physical test on a uniform material specimen under a constant amplitude load. Approximations for low-alloy steel parts can be made using a lower-alloy steel material.
Splined shafts provide low noise, minimal wear and fatigue failure. However, some mechanical transmission elements need to be removed from the shaft during assembly and manufacturing processes. The shafts must still be capable of relative axial movement for functional purposes. As such, good spline joints are essential to high-quality torque transmission, minimal backlash, and low noise. The major failure modes of spline shafts include fretting corrosion, tooth breakage, and fatigue failure.
The outer disc carrier spline is susceptible to tensile stress and fatigue failure. High customer demands for low noise and low wear and fatigue failure makes splined shafts an excellent choice. A fractured spline gear coupling was received for analysis. It was installed near the top of a filter shaft and inserted into the gearbox motor. The service history was unknown. The fractured spline gear coupling had longitudinally cracked and arrested at the termination of the spline gear teeth. The spline gear teeth also exhibited wear and deformation.
A new spline coupling method detects fault propagation in hollow cylindrical splined shafts. A spline coupling is fabricated using an AE method with the spline section unrolled into a metal plate of the same thickness as the cylinder wall. In addition, the spline coupling is misaligned, which puts significant concentration on the spline teeth. This further accelerates the rate of fretting fatigue and wear.
A spline joint should be lubricated after 25 hours of operation. Frequent lubrication can increase maintenance costs and cause downtime. Moreover, the lubricant may retain abrasive particles at the interfaces. In some cases, lubricants can even cause misalignment, leading to premature failure. So, the lubrication of a spline coupling is vital in ensuring proper functioning of the shaft.
The design of a spline coupling can be optimized to enhance its wear resistance and reliability. Surface treatments, loads, and rotation affect the friction properties of a spline coupling. In addition, a finite element method was developed to predict wear of a floating spline coupling. This method is feasible and provides a reliable basis for predicting the wear and fatigue life of a spline coupling.
splineshaft

They can be machined using a slotting or shaping machine

Machines can be used to shape splined shafts in a variety of industries. They are useful in many applications, including gearboxes, braking systems, and axles. A slotted shaft can be manipulated in several ways, including hobbling, broaching, and slotting. In addition to shaping, splines are also useful in reducing bar diameter.
When using a slotting or shaping machine, the workpiece is held against a pedestal that has a uniform thickness. The machine is equipped with a stand column and limiting column (Figure 1), each positioned perpendicular to the upper surface of the pedestal. The limiting column axis is located on the same line as the stand column. During the slotting or shaping process, the tool is fed in and out until the desired space is achieved.
One process involves cutting splines into a shaft. Straddle milling, spline shaping, and spline cutting are 2 common processes used to create splined shafts. Straddle milling involves a fixed indexing fixture that holds the shaft steady, while rotating milling cutters cut the groove in the length of the shaft. Several passes are required to ensure uniformity throughout the spline.
Splines are a type of gear. The ridges or teeth on the drive shaft mesh with grooves in the mating piece. A splined shaft allows the transmission of torque to a mate piece while maximizing the power transfer. Splines are used in heavy vehicles, construction, agriculture, and massive earthmoving machinery. Splines are used in virtually every type of rotary motion, from axles to transmission systems. They also offer better fatigue life and reliability.
Slotting or shaping machines can also be used to shape splined shafts. Slotting machines are often used to machine splined shafts, because it is easier to make them with these machines. Using a slotting or shaping machine can result in splined shafts of different sizes. It is important to follow a set of spline standards to ensure your parts are manufactured to the highest standards.
A milling machine is another option for producing splined shafts. A spline shaft can be set up between 2 centers in an indexing fixture. Two side milling cutters are mounted on an arbor and a spacer and shims are inserted between them. The arbor and cutters are then mounted to a milling machine spindle. To make sure the cutters center themselves over the splined shaft, an adjustment must be made to the spindle of the machine.
The machining process is very different for internal and external splines. External splines can be broached, shaped, milled, or hobbed, while internal splines cannot. These machines use hard alloy, but they are not as good for internal splines. A machine with a slotting mechanism is necessary for these operations.

China Best Sales Spindle Bearing Double Row Single Row Bearing OEM 20tac47c 7806c, 7807c Angular Contact Ball Bearing CZPT     with Great qualityChina Best Sales Spindle Bearing Double Row Single Row Bearing OEM 20tac47c 7806c, 7807c Angular Contact Ball Bearing CZPT     with Great quality

China OEM High Speed Double Row OEM 3215A Angular Contact Ball Bearing with high quality

Product Description

Products introduction
Bearing Feature:
Angular Contact Ball Bearing is mainly applied on high speed, high precision and little axial load occasions, such as airplane engine main shaft, machine tool main shaft and main shafts of other high speed precision machine. It can also be applied on high frequency motor, steam turbine, oil pump, air compressor and printing machine etc. It is 1 of the bearings most widely used in machinery industry.
 
Applications:
Single row angular contact ball bearings: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft, booster pumps, drilling platforms, food machinery, dividing head, fill welder, low-noise cooling towers, electrical and mechanical equipment, painting equipment, machine slot board, arc welding machine 
Double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, welding machines, electric irons, square box, gravity gun, wire strippers, axle, test analysis equipment, fine chemicals, machinery

All technical details as belows:
Material information:

Specification Steel NO. HRC Chemical composition %
C Si Mn Mo S P Cr
GB/T 18254 Gcr 15 61-65 0.95~1.05 0.15~0.35 0.25~0.45 below 0.08 below 0.571 below 0.571 1.40~1.65

Why choose us?
1). The quality assurance:
Product quality is the lifeline of an enterprise. In order to possessing the leading technology, our company implements the quality control system and establishes a technical and strict inspection team. 
2). The convenient & fast transportation to HangZhou port 
Our factory is located in HangZhou city, eaierly transport to the port by car
3). 24- hour customers series online:
High quality, good credit and excellent service are the tenet of our factory. Customers’satisfaction is our lifeline, as well as our highest honor. We will do our best to meet your requirements, and will do better in the future.

FAQ
Q: Are you trading company or manufacturer ?
A: We are manufacturer.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shippment.

Other Related

FAQ:

1. Are you a factory or a trading company?
   We are a professional manufacture of deep groove ball bearings and other bearings.

2. Is OEM available?
    Yes, OEM is available. We have professional designer to help your brand promotion. 

3. Is the sample available?
     Yes, samples are available for you to test the quality.

4. Have the products been tested before shipping?
    Yes, all of our bearings have been tested before delivery.

5. How long is your delivery time?
    As mentioned above, there are different types of shipping for your order. We make sure to deliver goods once all products are produced and tested.

6. What is your terms of payment ?
    You can pay by T/T, L/C, etc., and it can be negotiated according to different orders with different amount.

8.How to stock and maintenance my bearings?
   Do not store bearings directly on concrete floors, where water can condense and collect on the bearing;
Store the bearings on a pallet or shelf, in an area where the bearings will not be subjected to high humidityor extreme temperature that may result in condensation forming;

 

Analytical Approaches to Estimating Contact Pressures in Spline Couplings

A spline coupling is a type of mechanical connection between 2 rotating shafts. It consists of 2 parts – a coupler and a coupling. Both parts have teeth which engage and transfer loads. However, spline couplings are typically over-dimensioned, which makes them susceptible to fatigue and static behavior. Wear phenomena can also cause the coupling to fail. For this reason, proper spline coupling design is essential for achieving optimum performance.
splineshaft

Modeling a spline coupling

Spline couplings are becoming increasingly popular in the aerospace industry, but they operate in a slightly misaligned state, causing both vibrations and damage to the contact surfaces. To solve this problem, this article offers analytical approaches for estimating the contact pressures in a spline coupling. Specifically, this article compares analytical approaches with pure numerical approaches to demonstrate the benefits of an analytical approach.
To model a spline coupling, first you create the knowledge base for the spline coupling. The knowledge base includes a large number of possible specification values, which are related to each other. If you modify 1 specification, it may lead to a warning for violating another. To make the design valid, you must create a spline coupling model that meets the specified specification values.
After you have modeled the geometry, you must enter the contact pressures of the 2 spline couplings. Then, you need to determine the position of the pitch circle of the spline. In Figure 2, the centre of the male coupling is superposed to that of the female spline. Then, you need to make sure that the alignment meshing distance of the 2 splines is the same.
Once you have the data you need to create a spline coupling model, you can begin by entering the specifications for the interface design. Once you have this data, you need to choose whether to optimize the internal spline or the external spline. You’ll also need to specify the tooth friction coefficient, which is used to determine the stresses in the spline coupling model 20. You should also enter the pilot clearance, which is the clearance between the tip 186 of a tooth 32 on 1 spline and the feature on the mating spline.
After you have entered the desired specifications for the external spline, you can enter the parameters for the internal spline. For example, you can enter the outer diameter limit 154 of the major snap 54 and the minor snap 56 of the internal spline. The values of these parameters are displayed in color-coded boxes on the Spline Inputs and Configuration GUI screen 80. Once the parameters are entered, you’ll be presented with a geometric representation of the spline coupling model 20.

Creating a spline coupling model 20

The spline coupling model 20 is created by a product model software program 10. The software validates the spline coupling model against a knowledge base of configuration-dependent specification constraints and relationships. This report is then input to the ANSYS stress analyzer program. It lists the spline coupling model 20’s geometric configurations and specification values for each feature. The spline coupling model 20 is automatically recreated every time the configuration or performance specifications of the spline coupling model 20 are modified.
The spline coupling model 20 can be configured using the product model software program 10. A user specifies the axial length of the spline stack, which may be zero, or a fixed length. The user also enters a radial mating face 148, if any, and selects a pilot clearance specification value of 14.5 degrees or 30 degrees.
A user can then use the mouse 110 to modify the spline coupling model 20. The spline coupling knowledge base contains a large number of possible specification values and the spline coupling design rule. If the user tries to change a spline coupling model, the model will show a warning about a violation of another specification. In some cases, the modification may invalidate the design.
In the spline coupling model 20, the user enters additional performance requirement specifications. The user chooses the locations where maximum torque is transferred for the internal and external splines 38 and 40. The maximum torque transfer location is determined by the attachment configuration of the hardware to the shafts. Once this is selected, the user can click “Next” to save the model. A preview of the spline coupling model 20 is displayed.
The model 20 is a representation of a spline coupling. The spline specifications are entered in the order and arrangement as specified on the spline coupling model 20 GUI screen. Once the spline coupling specifications are entered, the product model software program 10 will incorporate them into the spline coupling model 20. This is the last step in spline coupling model creation.
splineshaft

Analysing a spline coupling model 20

An analysis of a spline coupling model consists of inputting its configuration and performance specifications. These specifications may be generated from another computer program. The product model software program 10 then uses its internal knowledge base of configuration dependent specification relationships and constraints to create a valid three-dimensional parametric model 20. This model contains information describing the number and types of spline teeth 32, snaps 34, and shoulder 36.
When you are analysing a spline coupling, the software program 10 will include default values for various specifications. The spline coupling model 20 comprises an internal spline 38 and an external spline 40. Each of the splines includes its own set of parameters, such as its depth, width, length, and radii. The external spline 40 will also contain its own set of parameters, such as its orientation.
Upon selecting these parameters, the software program will perform various analyses on the spline coupling model 20. The software program 10 calculates the nominal and maximal tooth bearing stresses and fatigue life of a spline coupling. It will also determine the difference in torsional windup between an internal and an external spline. The output file from the analysis will be a report file containing model configuration and specification data. The output file may also be used by other computer programs for further analysis.
Once these parameters are set, the user enters the design criteria for the spline coupling model 20. In this step, the user specifies the locations of maximum torque transfer for both the external and internal spline 38. The maximum torque transfer location depends on the configuration of the hardware attached to the shafts. The user may enter up to 4 different performance requirement specifications for each spline.
The results of the analysis show that there are 2 phases of spline coupling. The first phase shows a large increase in stress and vibration. The second phase shows a decline in both stress and vibration levels. The third stage shows a constant meshing force between 300N and 320N. This behavior continues for a longer period of time, until the final stage engages with the surface.
splineshaft

Misalignment of a spline coupling

A study aimed to investigate the position of the resultant contact force in a spline coupling engaging teeth under a steady torque and rotating misalignment. The study used numerical methods based on Finite Element Method (FEM) models. It produced numerical results for nominal conditions and parallel offset misalignment. The study considered 2 levels of misalignment – 0.02 mm and 0.08 mm – with different loading levels.
The results showed that the misalignment between the splines and rotors causes a change in the meshing force of the spline-rotor coupling system. Its dynamics is governed by the meshing force of splines. The meshing force of a misaligned spline coupling is related to the rotor-spline coupling system parameters, the transmitting torque, and the dynamic vibration displacement.
Despite the lack of precise measurements, the misalignment of splines is a common problem. This problem is compounded by the fact that splines usually feature backlash. This backlash is the result of the misaligned spline. The authors analyzed several splines, varying pitch diameters, and length/diameter ratios.
A spline coupling is a two-dimensional mechanical system, which has positive backlash. The spline coupling is comprised of a hub and shaft, and has tip-to-root clearances that are larger than the backlash. A form-clearance is sufficient to prevent tip-to-root fillet contact. The torque on the splines is transmitted via friction.
When a spline coupling is misaligned, a torque-biased thrust force is generated. In such a situation, the force can exceed the torque, causing the component to lose its alignment. The two-way transmission of torque and thrust is modeled analytically in the present study. The analytical approach provides solutions that can be integrated into the design process. So, the next time you are faced with a misaligned spline coupling problem, make sure to use an analytical approach!
In this study, the spline coupling is analyzed under nominal conditions without a parallel offset misalignment. The stiffness values obtained are the percentage difference between the nominal pitch diameter and load application diameter. Moreover, the maximum percentage difference in the measured pitch diameter is 1.60% under a torque of 5000 N*m. The other parameter, the pitch angle, is taken into consideration in the calculation.

China OEM High Speed Double Row OEM 3215A Angular Contact Ball Bearing     with high qualityChina OEM High Speed Double Row OEM 3215A Angular Contact Ball Bearing     with high quality

China OEM CZPT Japan Brand Bearing Cylindrical Roller Bearing (NUP1032 NUP1032E) with Best Sales

Product Description

I. PRODUCT INFO.

Hot sale single row cylindrical roller bearings N318 for generators

At Bearing Service, we are brg bearing single row ball bearing pacific bearing grateful to have the opportunity to work with manufacturers like Great Bearing. Absolutely axle bearing bearing plate ball bearing size chart dedicated to customer satisfaction, they are continually bearing oil  one way clutch bearing nmb bearingsstriving to meet the demands of their – and our – clients. If you’ve been mini ball bearings conveyor roller bearings purchase ball bearings earching for new gearmotors – or any power transmission products – we encourage you to browse our site, view our catalog, and contact us if we can help.
Cylindrical roller bearings have high radial load capacity and some designs can accept light axial loading. They operate at moderate-to-high speeds.
The lubrication method must be carefully considered during the design phase when using roller bearings.
N, NU, NJ, and NUP Series, with various cage designs: Metric
Main purposes: medium and large motors, generators, internal combustion engines, gas turbines, machine tool spindles,deceleration devices, handling machinery, all kinds of industrial machinery.

Name                                                                 

NUP1032 NUP1032E cylindrical roller bearing                                                                        

Model of bearing

NUP1032 NUP1032E

Size 

160*240*38mm

Weight

5.81KG

Bearing material 

chrome steel, stainless steel,carton steel

Cage 

steel, brass, nylon

Precision

P0 P6 P5 P4 P2  

Delivery  date

1-2 working days after received ur payment

Payment terms

A:1 , the delivery time is 10-35 days . 

IV. FAQ
1. Q: When can I get the price?
   A:  After we get your inquiry, usually will response within 2-6 hours and quote for you soon, Urgent will be faster.
2. Q: Can I get free samples for test from your company?
   A: Yes, standard samples are available.
3. Q: What is the MOQ of your products?
   A: Usually ≥1, according to your demand, we are CZPT to accept small quantity order.
4. Q: Could you accept OEM service and customize?
   A: Yes, OEM is accepted and we can customize according to your sample and drawing.
5. Q: How about the Delivery time?
   A: In Stocks: 1-2 workdays.
      Production: 10-20 workdays after received your deposit. (According to your order quantity)
6. Q: What will we do if If we are not satisfied with the product?
   A: If have any abnormal, please Contact Us firstly, we will negotiate with customer to find a reasonable way to resolve and compensate.

V. CONTACT INFO.
ZheJiang CHIK BEARING CO, .LTD.
Chris  ( Export Dep. )
Add:  No.9 Longao, North Longao Road, HangZhou city,ZheJiang ,china 25            
Fax:       
Mobile: –
 

What Are the Advantages of a Splined Shaft?

If you are looking for the right splined shaft for your machine, you should know a few important things. First, what type of material should be used? Stainless steel is usually the most appropriate choice, because of its ability to offer low noise and fatigue failure. Secondly, it can be machined using a slotting or shaping machine. Lastly, it will ensure smooth motion. So, what are the advantages of a splined shaft?
Stainless steel is the best material for splined shafts

When choosing a splined shaft, you should consider its hardness, quality, and finish. Stainless steel has superior corrosion and wear resistance. Carbon steel is another good material for splined shafts. Carbon steel has a shallow carbon content (about 1.7%), which makes it more malleable and helps ensure smooth motion. But if you’re not willing to spend the money on stainless steel, consider other options.
There are 2 main types of splines: parallel splines and crowned splines. Involute splines have parallel grooves and allow linear and rotary motion. Helical splines have involute teeth and are oriented at an angle. This type allows for many teeth on the shaft and minimizes the stress concentration in the stationary joint.
Large evenly spaced splines are widely used in hydraulic systems, drivetrains, and machine tools. They are typically made from carbon steel (CR10) and stainless steel (AISI 304). This material is durable and meets the requirements of ISO 14-B, formerly DIN 5463-B. Splined shafts are typically made of stainless steel or C45 steel, though there are many other materials available.
Stainless steel is the best material for a splined shaft. This metal is also incredibly affordable. In most cases, stainless steel is the best choice for these shafts because it offers the best corrosion resistance. There are many different types of splined shafts, and each 1 is suited for a particular application. There are also many different types of stainless steel, so choose stainless steel if you want the best quality.
For those looking for high-quality splined shafts, CZPT Spline Shafts offer many benefits. They can reduce costs, improve positional accuracy, and reduce friction. With the CZPT TFE coating, splined shafts can reduce energy and heat buildup, and extend the life of your products. And, they’re easy to install – all you need to do is install them.
splineshaft

They provide low noise, low wear and fatigue failure

The splines in a splined shaft are composed of 2 main parts: the spline root fillet and the spline relief. The spline root fillet is the most critical part, because fatigue failure starts there and propagates to the relief. The spline relief is more susceptible to fatigue failure because of its involute tooth shape, which offers a lower stress to the shaft and has a smaller area of contact.
The fatigue life of splined shafts is determined by measuring the S-N curve. This is also known as the Wohler curve, and it is the relationship between stress amplitude and number of cycles. It depends on the material, geometry and way of loading. It can be obtained from a physical test on a uniform material specimen under a constant amplitude load. Approximations for low-alloy steel parts can be made using a lower-alloy steel material.
Splined shafts provide low noise, minimal wear and fatigue failure. However, some mechanical transmission elements need to be removed from the shaft during assembly and manufacturing processes. The shafts must still be capable of relative axial movement for functional purposes. As such, good spline joints are essential to high-quality torque transmission, minimal backlash, and low noise. The major failure modes of spline shafts include fretting corrosion, tooth breakage, and fatigue failure.
The outer disc carrier spline is susceptible to tensile stress and fatigue failure. High customer demands for low noise and low wear and fatigue failure makes splined shafts an excellent choice. A fractured spline gear coupling was received for analysis. It was installed near the top of a filter shaft and inserted into the gearbox motor. The service history was unknown. The fractured spline gear coupling had longitudinally cracked and arrested at the termination of the spline gear teeth. The spline gear teeth also exhibited wear and deformation.
A new spline coupling method detects fault propagation in hollow cylindrical splined shafts. A spline coupling is fabricated using an AE method with the spline section unrolled into a metal plate of the same thickness as the cylinder wall. In addition, the spline coupling is misaligned, which puts significant concentration on the spline teeth. This further accelerates the rate of fretting fatigue and wear.
A spline joint should be lubricated after 25 hours of operation. Frequent lubrication can increase maintenance costs and cause downtime. Moreover, the lubricant may retain abrasive particles at the interfaces. In some cases, lubricants can even cause misalignment, leading to premature failure. So, the lubrication of a spline coupling is vital in ensuring proper functioning of the shaft.
The design of a spline coupling can be optimized to enhance its wear resistance and reliability. Surface treatments, loads, and rotation affect the friction properties of a spline coupling. In addition, a finite element method was developed to predict wear of a floating spline coupling. This method is feasible and provides a reliable basis for predicting the wear and fatigue life of a spline coupling.
splineshaft

They can be machined using a slotting or shaping machine

Machines can be used to shape splined shafts in a variety of industries. They are useful in many applications, including gearboxes, braking systems, and axles. A slotted shaft can be manipulated in several ways, including hobbling, broaching, and slotting. In addition to shaping, splines are also useful in reducing bar diameter.
When using a slotting or shaping machine, the workpiece is held against a pedestal that has a uniform thickness. The machine is equipped with a stand column and limiting column (Figure 1), each positioned perpendicular to the upper surface of the pedestal. The limiting column axis is located on the same line as the stand column. During the slotting or shaping process, the tool is fed in and out until the desired space is achieved.
One process involves cutting splines into a shaft. Straddle milling, spline shaping, and spline cutting are 2 common processes used to create splined shafts. Straddle milling involves a fixed indexing fixture that holds the shaft steady, while rotating milling cutters cut the groove in the length of the shaft. Several passes are required to ensure uniformity throughout the spline.
Splines are a type of gear. The ridges or teeth on the drive shaft mesh with grooves in the mating piece. A splined shaft allows the transmission of torque to a mate piece while maximizing the power transfer. Splines are used in heavy vehicles, construction, agriculture, and massive earthmoving machinery. Splines are used in virtually every type of rotary motion, from axles to transmission systems. They also offer better fatigue life and reliability.
Slotting or shaping machines can also be used to shape splined shafts. Slotting machines are often used to machine splined shafts, because it is easier to make them with these machines. Using a slotting or shaping machine can result in splined shafts of different sizes. It is important to follow a set of spline standards to ensure your parts are manufactured to the highest standards.
A milling machine is another option for producing splined shafts. A spline shaft can be set up between 2 centers in an indexing fixture. Two side milling cutters are mounted on an arbor and a spacer and shims are inserted between them. The arbor and cutters are then mounted to a milling machine spindle. To make sure the cutters center themselves over the splined shaft, an adjustment must be made to the spindle of the machine.
The machining process is very different for internal and external splines. External splines can be broached, shaped, milled, or hobbed, while internal splines cannot. These machines use hard alloy, but they are not as good for internal splines. A machine with a slotting mechanism is necessary for these operations.

China OEM CZPT Japan Brand Bearing Cylindrical Roller Bearing (NUP1032 NUP1032E)     with Best SalesChina OEM CZPT Japan Brand Bearing Cylindrical Roller Bearing (NUP1032 NUP1032E)     with Best Sales

China OEM Angular Contact Ball Bearing H7005c 2rz 7005c P4 for Machine Tool, Motor, Gas Turbine, Centrifugal Separator with Good quality

Product Description

Bearing Feature:

Angular Contact Ball Bearing is mainly applied on high speed, high precision and little axial load occasions, such as airplane engine main shaft, machine tool main shaft and main shafts of other high speed precision machine. It can also be applied on high frequency motor, steam turbine, oil pump, air compressor and printing machine etc. It is 1 of the bearings most widely used in machinery industry.

 

Applications:

Single row angular contact ball bearings: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft, booster pumps, drilling platforms, food machinery, dividing head, fill welder, low-noise cooling towers, electrical and mechanical equipment, painting equipment, machine slot board, arc welding machine.
Double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, welding machines, electric irons, square box, gravity gun, wire strippers, axle, test analysis equipment, fine chemicals, machinery.

 

Product Number Bore Dia (d) Outer Dia (D) Width (B) Dynamic Load Rating (Cr) (kN) Static Load Rating (Cor) (kN)
7000 10 mm 26mm 8mm 4.65 2.07
7001 12 mm 28 mm 8 mm 5.05 2.46
7002 15 mm 32 mm 9 mm 5.8 3.15
7003 17 mm 35 mm 10 mm 7.15 3.85
7004 20 mm 42mm 12mm 9.7 5.6
7005 25 mm 47mm 12mm 10.7 6.85
7006 30 mm 55mm 13mm 13.9 9.45
7007 35 mm 62mm 14mm 17.5 12.6
7008 40 mm 68mm 15mm 18.8 14.6
7009 45 mm 75mm 16mm 22.3 17.7
7571 50 mm 80mm 16mm 23.7 20.1
7011 55 mm 90mm 18mm 31 26.3
7012 60 mm 95mm 18mm 32 28.1
7013 65 mm 100mm 18mm 33.5 31.5
7014 70 mm 110mm 20mm 42.5 39.5
7015 75 mm 115mm 20mm 43.5 41.5
7016 80 mm 125mm 22mm 53.5 50.5
7017 85 mm 130mm 22mm 54.5 53.5
7018 90 mm 140mm 24mm 65 63.5
7019 95 mm 145mm 24mm 67 67
7571 100 mm 150mm 24mm 68.5 70.5
7571 105 mm 160mm 26mm 80 81.5
7571 110 mm 170mm 28mm 92 93
7571 120 mm 180mm 28mm 93.5 98.5
7026 130 mm 200mm 33mm 117 125
7571 140 mm 210mm 33mm 120 133
7030 150 mm 225mm 35mm 137 154
7032 160 mm 240mm 38mm 155 176
7034 170 mm 260mm 42mm 186 214
7036 180 mm 280mm 46mm 219 266
7038 190 mm 290mm 46mm 224 280
7040 200 mm 310mm 51mm 252 325

 

How to Calculate Stiffness, Centering Force, Wear and Fatigue Failure of Spline Couplings

There are various types of spline couplings. These couplings have several important properties. These properties are: Stiffness, Involute splines, Misalignment, Wear and fatigue failure. To understand how these characteristics relate to spline couplings, read this article. It will give you the necessary knowledge to determine which type of coupling best suits your needs. Keeping in mind that spline couplings are usually spherical in shape, they are made of steel.
splineshaft

Involute splines

An effective side interference condition minimizes gear misalignment. When 2 splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by 5 mm. A linear lead variation, which results from multiple connections along the length of the spline contact, increases the effective clearance or interference by a given percentage. This type of misalignment is undesirable for coupling high-speed equipment.
Involute splines are often used in gearboxes. These splines transmit high torque, and are better able to distribute load among multiple teeth throughout the coupling circumference. The involute profile and lead errors are related to the spacing between spline teeth and keyways. For coupling applications, industry practices use splines with 25 to 50-percent of spline teeth engaged. This load distribution is more uniform than that of conventional single-key couplings.
To determine the optimal tooth engagement for an involved spline coupling, Xiangzhen Xue and colleagues used a computer model to simulate the stress applied to the splines. The results from this study showed that a “permissible” Ruiz parameter should be used in coupling. By predicting the amount of wear and tear on a crowned spline, the researchers could accurately predict how much damage the components will sustain during the coupling process.
There are several ways to determine the optimal pressure angle for an involute spline. Involute splines are commonly measured using a pressure angle of 30 degrees. Similar to gears, involute splines are typically tested through a measurement over pins. This involves inserting specific-sized wires between gear teeth and measuring the distance between them. This method can tell whether the gear has a proper tooth profile.
The spline system shown in Figure 1 illustrates a vibration model. This simulation allows the user to understand how involute splines are used in coupling. The vibration model shows 4 concentrated mass blocks that represent the prime mover, the internal spline, and the load. It is important to note that the meshing deformation function represents the forces acting on these 3 components.
splineshaft

Stiffness of coupling

The calculation of stiffness of a spline coupling involves the measurement of its tooth engagement. In the following, we analyze the stiffness of a spline coupling with various types of teeth using 2 different methods. Direct inversion and blockwise inversion both reduce CPU time for stiffness calculation. However, they require evaluation submatrices. Here, we discuss the differences between these 2 methods.
The analytical model for spline couplings is derived in the second section. In the third section, the calculation process is explained in detail. We then validate this model against the FE method. Finally, we discuss the influence of stiffness nonlinearity on the rotor dynamics. Finally, we discuss the advantages and disadvantages of each method. We present a simple yet effective method for estimating the lateral stiffness of spline couplings.
The numerical calculation of the spline coupling is based on the semi-analytical spline load distribution model. This method involves refined contact grids and updating the compliance matrix at each iteration. Hence, it consumes significant computational time. Further, it is difficult to apply this method to the dynamic analysis of a rotor. This method has its own limitations and should be used only when the spline coupling is fully investigated.
The meshing force is the force generated by a misaligned spline coupling. It is related to the spline thickness and the transmitting torque of the rotor. The meshing force is also related to the dynamic vibration displacement. The result obtained from the meshing force analysis is given in Figures 7, 8, and 9.
The analysis presented in this paper aims to investigate the stiffness of spline couplings with a misaligned spline. Although the results of previous studies were accurate, some issues remained. For example, the misalignment of the spline may cause contact damages. The aim of this article is to investigate the problems associated with misaligned spline couplings and propose an analytical approach for estimating the contact pressure in a spline connection. We also compare our results to those obtained by pure numerical approaches.

Misalignment

To determine the centering force, the effective pressure angle must be known. Using the effective pressure angle, the centering force is calculated based on the maximum axial and radial loads and updated Dudley misalignment factors. The centering force is the maximum axial force that can be transmitted by friction. Several published misalignment factors are also included in the calculation. A new method is presented in this paper that considers the cam effect in the normal force.
In this new method, the stiffness along the spline joint can be integrated to obtain a global stiffness that is applicable to torsional vibration analysis. The stiffness of bearings can also be calculated at given levels of misalignment, allowing for accurate estimation of bearing dimensions. It is advisable to check the stiffness of bearings at all times to ensure that they are properly sized and aligned.
A misalignment in a spline coupling can result in wear or even failure. This is caused by an incorrectly aligned pitch profile. This problem is often overlooked, as the teeth are in contact throughout the involute profile. This causes the load to not be evenly distributed along the contact line. Consequently, it is important to consider the effect of misalignment on the contact force on the teeth of the spline coupling.
The centre of the male spline in Figure 2 is superposed on the female spline. The alignment meshing distances are also identical. Hence, the meshing force curves will change according to the dynamic vibration displacement. It is necessary to know the parameters of a spline coupling before implementing it. In this paper, the model for misalignment is presented for spline couplings and the related parameters.
Using a self-made spline coupling test rig, the effects of misalignment on a spline coupling are studied. In contrast to the typical spline coupling, misalignment in a spline coupling causes fretting wear at a specific position on the tooth surface. This is a leading cause of failure in these types of couplings.
splineshaft

Wear and fatigue failure

The failure of a spline coupling due to wear and fatigue is determined by the first occurrence of tooth wear and shaft misalignment. Standard design methods do not account for wear damage and assess the fatigue life with big approximations. Experimental investigations have been conducted to assess wear and fatigue damage in spline couplings. The tests were conducted on a dedicated test rig and special device connected to a standard fatigue machine. The working parameters such as torque, misalignment angle, and axial distance have been varied in order to measure fatigue damage. Over dimensioning has also been assessed.
During fatigue and wear, mechanical sliding takes place between the external and internal splines and results in catastrophic failure. The lack of literature on the wear and fatigue of spline couplings in aero-engines may be due to the lack of data on the coupling’s application. Wear and fatigue failure in splines depends on a number of factors, including the material pair, geometry, and lubrication conditions.
The analysis of spline couplings shows that over-dimensioning is common and leads to different damages in the system. Some of the major damages are wear, fretting, corrosion, and teeth fatigue. Noise problems have also been observed in industrial settings. However, it is difficult to evaluate the contact behavior of spline couplings, and numerical simulations are often hampered by the use of specific codes and the boundary element method.
The failure of a spline gear coupling was caused by fatigue, and the fracture initiated at the bottom corner radius of the keyway. The keyway and splines had been overloaded beyond their yield strength, and significant yielding was observed in the spline gear teeth. A fracture ring of non-standard alloy steel exhibited a sharp corner radius, which was a significant stress raiser.
Several components were studied to determine their life span. These components include the spline shaft, the sealing bolt, and the graphite ring. Each of these components has its own set of design parameters. However, there are similarities in the distributions of these components. Wear and fatigue failure of spline couplings can be attributed to a combination of the 3 factors. A failure mode is often defined as a non-linear distribution of stresses and strains.

China OEM Angular Contact Ball Bearing H7005c 2rz 7005c P4 for Machine Tool, Motor, Gas Turbine, Centrifugal Separator     with Good qualityChina OEM Angular Contact Ball Bearing H7005c 2rz 7005c P4 for Machine Tool, Motor, Gas Turbine, Centrifugal Separator     with Good quality

China OEM Single Row Cylindrical Roller Bearing Ncf2920CV SL182920 near me supplier

Product Description

single row cylindrical roller bearing NCF2920CV SL182920

Semi-locating,full complement ,cylindrical roller bearing

single row,semi-locating 

double row,semi-locating 

 Mass

 Dimensions

 basic load rating

 ref.

 ref.

ref.

 ref.

 KG

   d

   D

   B

   S

 dyn.

 stat.

SL183004

NCF3004CV

 

 

0.11

20

42

16

1.5

30.5

 26.5

SL182204

NCF2204V

 

 

 0.16

 20

 47

 18

 1

 45.5

 37.5

 

 

 SL185004

NNCF5004V 

 0.2

 20

 42

 30

 1

 53

 53

 SL183005

 NCF3005CV

 

 

 0.12

 25

 47

 16

 1.5

 35

 32.5

 SL182205

 NCF2205V

 

 

 0.18

 25

 52

 18

 1

 51

 45

 SL192305

 NJG2305VH

 

 

 0.37

 25

 62

 24

 2

 73

 60

 

 

 SL185005

NNCF5005V 

 0.23

 25

 47

 30

 1

 60

 65

 SL183006

NCF3006CV 

 

 

 0.2

 30

 55

 19

 2

 45

 43

 SL182206

NCF2206V 

 

 

 0.3

 30

 62

 20

 1

 70

 65

 SL192306

NJG2306VH

 

 

 0.56

 30

 72

 27

 2

 100

 88

 

 

 SL185006

NNCF5006V 

 0.35

 30

 55

 34

 1.5

 78

 84

 SL183007

 NCF3007CV

 

 

 0.26

 35

 62

 20

 2

 55

 55

 SL182207

 NCF2207V

 

 

 0.44

 35

 72

 23

 1

 88

 79

 SL192307

NJG2307VH 

 

 

 0.74

 35

 80

 31

 2

 126

 112

 

 

 SL185007

 NNCF5007V

 0.46

 35

 62

 36

 1.5

 94

 109

 SL183008

 NCF3008CV

 

 

 0.31

 40

 68

 21

 2

 66

 68

 SL182208

 NCF2208V

 

 

 0.55

 40

 80

 23

 1

 97

 93

 SL192308

 NJG2308VH

 

 

 1.01

 40

 90

 33

 2

 170

 156

 

 

 SL185008

 NNCF5008V

 0.56

 40

 68

 38

 1.5

 113

 136

 SL183009

 NCF3009CV

 

 

 0.4

 45

 75

 23

 2

 70

 76

 SL182209

 NCF2209V

 

 

 0.59

 45

 85

 23

 1

 101

 99

 SL192309

 NJG2309VH

 

 

 1.37

 45

 100

 36

 3

 181

 169

 

 

 SL185009

NNCF5009V 

 0.71

 45

 75

 40

 1.5

 120

 151

 SL183571

 NCF3571CV

 

 

 0.43

 50

 80

 23

 2

 88

 96

 SL182210

 NCF2210V

 

 

 0.64

 50

 90

 23

 1

 109

 113

 SL192310

 NJG2310VH

 

 

 1.81

 50

 110

 40

 3

 232

 219

 

 

 SL185571

NNCF5571V 

 0.76

 50

 80

 40

 1.5

 151

 191

 SL183011

NCF3011CV 

 

 

 0.64

 55

 90

 26

 2

 120

 136

 SL182211

 NCF2211V

 

 

0.87

 55

 100

 25

 1

 140

 150

 SL192311

 NJG2311VH

 

 

2.28

 55

 120

 43

 3

270

 255

 

 

 SL185011

NNCF5011V 

 1.16

 55

 90

 46

 1.5

 206

 275

 SL182912

NCF2912V 

 

 

 0.29

 60

 85

 16

 1

 63

 78

 SL183012

 NCF3012CV

 

 

 0.69

 60

 95

 26

 2

 123

 145

 SL182212

 NCF2212V

 

 

 1.18

 60

 110

 28

 1.5

 169

 180

 SL192312

 NJG2312VH

 

 

 2.88

 60

 130

 46

 3

 285

 280

 

 

 SL185012

NNCF5012V 

 1.24

 60

 95

 46

 1.5

 212

 290

 SL182913

 NCF2913V

 

 

 0.31

 65

 90

 16

 1

 67

 86

 SL183013

 NCF3013CV

 

 

 0.73

 65

 100

 26

 2

 130

 159

 SL182213

 NCF2213V

 

 

 1.57

 65

 120

 31

 1.5

 198

 214

 SL192313

NJG2313VH 

 

 

 3.52

 65

 140

 48

 3.5

 350

 355

 

 

 SL185013

NNCF5013V 

 1.32

 65

 100

 46

 1.5

 223

 320

 SL182914

 NCF2914V

 

 

 0.49

 70

 100

 19

 1

 88

 114

 SL183014

 NCF3014CV

 

 

 1.02

 70

 110

 30

 3

 153

 `76

 SL182214

 NCF2214V

 

 

 1.66

 70

 125

 31

 1.5

 184

 117

 SL192314

NJG2314VH 

 

 

 4.33

 70

 150

 51

 3.5

 385

 390

 

 

 SL185014

NNCF5014V 

 1.85

 70

 110

 54

 3

 265

 355

 SL182915

 NCF2915V

 

 

 0.52

 75

 105

 10

 1

 91

121

 SL183015

 NCF3015CV

 

 

 1.06

 75

 115

 30

 3

 162

 194

 SL182215

 NCF2215V

 

 

 1.75

 75

 130

 31

 1.5

 190

 241

 SL192315

 NJG2315VH

 

 

 5.3

75

 160

 55

 3.5

 460

 465

Dimension(b)

Semi-locating,full complement,cylindrical roller bearing

 single row,semi-locating

 double row,semi-locating

 MASS

 Dimensions

 basic load ratings

 REF

REF

 REF

.REF

 KG

  d 

   D

   B 

  S  

 dyn.(KN)

 stat.(KN)

   

 SL185015

 NNCF5015V

 1.93

75 

115 

 54

 3

 275

 390

 SL182916

NCF2916V 

 

 

 0.55

80 

 110

 19

 1

 94

 129

 SL183016

 NCF3016CV

 

 

 1.43

 80

 125

 34

 4

 173

 225

 SL182216

 NCF2216V

 

 

 2.15

 80

 140

 33

 1.5

 226

 285

 SL192316

 NJG2316VH

 

 

 6.32

 80

 170

 58

 3.5

 540

 560

 

 

 SL185016

NNCF5016V 

 2.59

 80

 125

 60

 3.5

 295

 450

 SL182917

 NCF2917V

 

 

 0.81

 85

 120

 22

 1

 118

162

 SL183017

 NCF3017CV

 

 

 1.51

 85

 130

 34

 4

 178

 237

 SL182217

 NCF2217V

 

 

 2.74

 85

 150

 36

 1.5

 255

 325

 SL192317

 NJG2317VH

 

 

 7.32

 85

 180

 60

 4

 570

 620

 

 

 SL185017

 NNCF5017V

 2.72

 85

 130

 60

 3.5

 305

 475

 SL182918

 NCF2918V

 

 

 0.84

 90

 125

 22

 1

 122

 172

 SL183018

 NCF3018CV

 

 

 1.97

 90

 140

 37

 4

 208

 280

 SL182218

 NCF2218V

 

 

 3.48

 90

 160

 40

 2.5

 290

 370

 SL192318

 NJG2318VH

 

 

 8.83

 90

 190

 64

 4

 620

 660

 

 

 SL185018

 NNCF5018V

 3.62

 90

 140

 67

 4

 355

 560

 SL182919

 NCF2919V

 

 

 0.86

 95

 130

 22

 1

 132

 179

 SL182219

 NCF2219V

 

 

 4.17

 95

 170

 43

 2.5

 340

 435

 SL192319

 NJG2319VH

 

 

 10.2

 95

 200

 67

 4

 650

 720

 SL182920

 NCF2920V

 

 

 1.14

 100

 140

 24

 1.5

152 

 206

 SL183571

 NCF3571CV

 

 

 2.15

 100

 150

 37

 4

 219

 310

 SL182220

 NCF2220V

 

 

 5.13

 100

 180

 46

 2.5

395

 520

 SL192320

 NJG2320VH

 

 

 13

 100

 215

 73

 4

 790

 860

 

 

 SL185571

 NNCF5571V

 3.94

 100

 150

 67

 4

 375

 620

 SL182922

 NCF2922V

 

 

 1.23

 110

 150

 24

 1.5

 155

 220

 SL183571

 NCF3571CV

 

 

 3.5

 110

 170

 45

 5.5

 285

 395

 SL182222

 NCF2222V

 

 

 7.24

 110

 200

 53

 4

 455

 590

 SL192322

 NJG2322VH

 

 

 17

 110

 240

 80

 5

 950

 980

 

 

 SL185571

 NNCF5571V

 6.32

 110

 170

 80

 5

 490

 790

 SL182924

 NCF2924V

 

 

 1.73

 120

 165

 27

 1.5

 199

 295

 SL183571

 NCF3571CV

 

 

 3.8

 120

 180

 46

 5.5

 300

 435

 SL182224

 NCF2224V

 

 

 9.08

 120

 215

 58

 4

 540

 730

 SL192324

 NJG2324VH

 

 

 22.3

 120

 260

 86

 5

 1130

 1240

 

 

 SL185571

 NNCF5571V

 6.77

 120

 180

 80

 5

 520

 870

 SL182926

 NCF2926V

 

 

 2.33

 130

 180

 30

 2

 238

 355

 SL183026

 NCF3026CV

 

 

 5.65

 130

 200

 52

 5.5

 435

 620

 SL182226

 NCF2226V

 

 

 11.25

 130

 230

 64

 5

 630

 860

 

 

 SL185026

 NNCF5026V

 10.2

 130

 200

 95

 5

 740

 1230

 SL182928

 NCF2928V

 

 

 2.42

 140

 190

 30

 2

 260

 385

 SL183571

 NCF3571CV

 

 

 6.04

 140

 210

 53

 5.5

 455

 680

 SL182228

 NCF2228V

 

 

 14.47

 140

 250

 68

 5

 720

 1571

 

 

 SL185571

 NNCF5571V

 11.1

 140

 210

 95

 5

 780

 1360

 SL182930

 NCF2930V

 

 

 3.77

 150

 210

 36

 2.5

 340

 490

 SL183030

 NCF3030CV

 

 

 7.33

 150

 225

 56

 7

 480

 710

 SL182230

 NCF2230V

 

 

 18.43

 150

 270

 73

 6

 830

 1180

 

 

 SL185030

 NNCF5030V

 13.3

 150

 225

 100

 6

 810

 1390

 SL182932

 NCF2932V

 

 

 4

 160

 220

 36

 2.5

 350

 520

 SL183032

 NCF3032CV

 

 

 8.8

 160

 240

 60

 7

 550

 820

 SL182232

 NCF2232V

 

 

 23

 160

 290

 80

 6

 1030

 1490

 

 

 SL185032

 NNCF5032V

 16.2

 160

 240

 109

 6

 952

1600 

Quick Details
ID Size: 20mm-5000mm
Number of Row: Single Row/ Double row
Features & Benefits: Separable design for simple mounting & dismounting

Specifications
Cylindrical Roller Bearing
1. Best quality
2. Low noise, long life
3. Compertitive price

We are specialized in bearing export, production, selling and after-service. Our principle is service and quality First!

Packaging & Delivery
Packaging Detail: Single box+carton+pallet or Customer requirement
Delivery Detail: 3-15 days

Cylindrical Roller Bearing Types:
1) N202 – N248, N303 – N334, N403 – N418, N2203 – N2226, N2305 – N2330

2) NU1011 – NU1571, NU202 – NU264, NU303 – NU356, NU404 – NU430,
NU2203 – U2264, NU2305 – NU2352

3) NJ1011 – NJ1571, NJ202 – NJ252, NJ303 – NJ356, NJ404 – NJ430, NJ2203 –
NJ2264, NJ2305 – NJ2352

4) NUP202 – NUP228, NUP303 – NUP324, NUP404 – NUP418, NUP2203 – NUP2226,
NUP2307 – NUP2316

In this type of bearings, the rollers race tracks are essentially cylindrical, however they may be ground slightly curved in order to achieve thereby small degree of flexibility.
The rollers are guided between 2 lips on either the inner race or the outer race. Other types provided with either no lip, 1 lip or 2 lips, according to the function which the bearing has to perform. Ball Bearings have a point contact on the races whereas all types of cylindrical roller bearings have A Line contact.

Due to line contact the cylindrical roller bearings have a very high radial load carrying capacity as compared to ball bearings of the same size. Due to their separable design, cylindrical roller bearings are more convenient for mountings than ball bearings.
These bearings are mainly used in medium and large size motors, electricity generators, internal combustion engines, gas turbines, machine tools, spindles, reducers, unloading and lifting machines and other industrial machinery.
 

New model Old model ID OD T
(mm)
Cr Cor Grease Oil Weigth
(mm) (mm) (kN) (kN) (r/min) (r/min) (kg)
NU2206E 32506E 30 62 20 45.5 48 8500 11000 0.268
NU306E 32306E 30 72 19 49.2 48.2 8000 10000 0.377
NU2306E 32606E 30 72 27 70 75.5 8000 10000 0.538
NU406 32406 30 90 23 57.2 53 7000 9000 0.73
NU1007 32107 35 62 14 19.5 18.8 8500 11000 0.16
NU207E 32207E 35 72 17 46.5 48 7500 9500 0.311
NU2207E 32507E 35 72 23 57.5 63 7500 9500 0.414
NU307E 32307E 35 80 21 62 63.2 7000 9000 0.501
NU2307E 32607E 35 80 31 87.5 98.2 7000 9000 0.738
NU407 32407 35 100 25 70.8 68.2 6000 7500 0.94
NU1008 32108 40 68 15 21.2 22 7500 9500 0.22
NU208E 32208E 40 80 18 51.5 53 7000 9000 0.394
NU2208E 32508E 40 80 23 67.5 75.2 7000 9000 0.507
NU308E 32308E 40 90 23 76.8 77.8 6300 8000 0.68
NU2308E 32608E 40 90 33 105 118 6300 8000 0.974

The Different Types of Splines in a Splined Shaft

A splined shaft is a machine component with internal and external splines. The splines are formed in 4 different ways: Involute, Parallel, Serrated, and Ball. You can learn more about each type of spline in this article. When choosing a splined shaft, be sure to choose the right 1 for your application. Read on to learn about the different types of splines and how they affect the shaft’s performance.
splineshaft

Involute splines

Involute splines in a splined shaft are used to secure and extend mechanical assemblies. They are smooth, inwardly curving grooves that resist separation during operation. A shaft with involute splines is often longer than the shaft itself. This feature allows for more axial movement. This is beneficial for many applications, especially in a gearbox.
The involute spline is a shaped spline, similar to a parallel spline. It is angled and consists of teeth that create a spiral pattern that enables linear and rotatory motion. It is distinguished from other splines by the serrations on its flanks. It also has a flat top. It is a good option for couplers and other applications where angular movement is necessary.
Involute splines are also called involute teeth because of their shape. They are flat on the top and curved on the sides. These teeth can be either internal or external. As a result, involute splines provide greater surface contact, which helps reduce stress and fatigue. Regardless of the shape, involute splines are generally easy to machine and fit.
Involute splines are a type of splines that are used in splined shafts. These splines have different names, depending on their diameters. An example set of designations is for a 32-tooth male spline, a 2,500-tooth module, and a 30 degree pressure angle. An example of a female spline, a fillet root spline, is used to describe the diameter of the splined shaft.
The effective tooth thickness of splines is dependent on the number of keyways and the type of spline. Involute splines in splined shafts should be designed to engage 25 to 50 percent of the spline teeth during the coupling. Involute splines should be able to withstand the load without cracking.

Parallel splines

Parallel splines are formed on a splined shaft by putting 1 or more teeth into another. The male spline is positioned at the center of the female spline. The teeth of the male spline are also parallel to the shaft axis, but a common misalignment causes the splines to roll and tilt. This is common in many industrial applications, and there are a number of ways to improve the performance of splines.
Typically, parallel splines are used to reduce friction in a rotating part. The splines on a splined shaft are narrower on the end face than the interior, which makes them more prone to wear. This type of spline is used in a variety of industries, such as machinery, and it also allows for greater efficiency when transmitting torque.
Involute splines on a splined shaft are the most common. They have equally spaced teeth, and are therefore less likely to crack due to fatigue. They also tend to be easy to cut and fit. However, they are not the best type of spline. It is important to understand the difference between parallel and involute splines before deciding on which spline to use.
The difference between splined and involute splines is the size of the grooves. Involute splines are generally larger than parallel splines. These types of splines provide more torque to the gear teeth and reduce stress during operation. They are also more durable and have a longer life span. And because they are used on farm machinery, they are essential in this type of application.
splineshaft

Serrated splines

A Serrated Splined Shaft has several advantages. This type of shaft is highly adjustable. Its large number of teeth allows large torques, and its shorter tooth width allows for greater adjustment. These features make this type of shaft an ideal choice for applications where accuracy is critical. Listed below are some of the benefits of this type of shaft. These benefits are just a few of the advantages. Learn more about this type of shaft.
The process of hobbing is inexpensive and highly accurate. It is useful for external spline shafts, but is not suitable for internal splines. This type of process forms synchronized shapes on the shaft, reducing the manufacturing cycle and stabilizing the relative phase between spline and thread. It uses a grinding wheel to shape the shaft. CZPT Manufacturing has a large inventory of Serrated Splined Shafts.
The teeth of a Serrated Splined Shaft are designed to engage with the hub over the entire circumference of the shaft. The teeth of the shaft are spaced uniformly around the spline, creating a multiple-tooth point of contact over the entire length of the shaft. The results of these analyses are usually satisfactory. But there are some limitations. To begin with, the splines of the Serrated Splined Shaft should be chosen carefully. If the application requires large-scale analysis, it may be necessary to modify the design.
The splines of the Serrated Splined Shaft are also used for other purposes. They can be used to transmit torque to another device. They also act as an anti-rotational device and function as a linear guide. Both the design and the type of splines determine the function of the Splined Shaft. In the automobile industry, they are used in vehicles, aerospace, earth-moving machinery, and many other industries.

Ball splines

The invention relates to a ball-spinned shaft. The shaft comprises a plurality of balls that are arranged in a series and are operatively coupled to a load path section. The balls are capable of rolling endlessly along the path. This invention also relates to a ball bearing. Here, a ball bearing is 1 of the many types of gears. The following discussion describes the features of a ball bearing.
A ball-splined shaft assembly comprises a shaft with at least 1 ball-spline groove and a plurality of circumferential step grooves. The shaft is held in a first holding means that extends longitudinally and is rotatably held by a second holding means. Both the shaft and the first holding means are driven relative to 1 another by a first driving means. It is possible to manufacture a ball-splined shaft in a variety of ways.
A ball-splined shaft features a nut with recirculating balls. The ball-splined nut rides in these grooves to provide linear motion while preventing rotation. A splined shaft with a nut that has recirculating balls can also provide rotary motion. A ball splined shaft also has higher load capacities than a ball bushing. For these reasons, ball splines are an excellent choice for many applications.
In this invention, a pair of ball-spinned shafts are housed in a box under a carrier device 40. Each of the 2 shafts extends along a longitudinal line of arm 50. One end of each shaft is supported rotatably by a slide block 56. The slide block also has a support arm 58 that supports the center arm 50 in a cantilever fashion.
splineshaft

Sector no-go gage

A no-go gauge is a tool that checks the splined shaft for oversize. It is an effective way to determine the oversize condition of a splined shaft without removing the shaft. It measures external splines and serrations. The no-go gage is available in sizes ranging from 19mm to 130mm with a 25mm profile length.
The sector no-go gage has 2 groups of diametrally opposed teeth. The space between them is manufactured to a maximum space width and the tooth thickness must be within a predetermined tolerance. This gage would be out of tolerance if the splines were measured with a pin. The dimensions of this splined shaft can be found in the respective ANSI or DIN standards.
The go-no-go gage is useful for final inspection of thread pitch diameter. It is also useful for splined shafts and threaded nuts. The thread of a screw must match the contour of the go-no-go gage head to avoid a no-go condition. There is no substitute for a quality machine. It is an essential tool for any splined shaft and fastener manufacturer.
The NO-GO gage can detect changes in tooth thickness. It can be calibrated under ISO17025 standards and has many advantages over a non-go gage. It also gives a visual reference of the thickness of a splined shaft. When the teeth match, the shaft is considered ready for installation. It is a critical process. In some cases, it is impossible to determine the precise length of the shaft spline.
The 45-degree pressure angle is most commonly used for axles and torque-delivering members. This pressure angle is the most economical in terms of tool life, but the splines will not roll neatly like a 30 degree angle. The 45-degree spline is more likely to fall off larger than the other two. Oftentimes, it will also have a crowned look. The 37.5 degree pressure angle is a compromise between the other 2 pressure angles. It is often used when the splined shaft material is harder than usual.

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