Tag Archives: vw bearing

China Custom Wheel Hub Bearing Kit Vkba3643 for Audi, Seat, Skoda, VW with high quality

Product Description

1.;Reference OEM NO.;:;VKBA3643,;1T0498621,;3C0498621,;8J571625

2.;Product Specification:;
Front Axle,;Rear Axle
Flange Diameter:; 5.;4 In.;
Bolt Circle Diameter:; 4.;4 In.;
Wheel Pilot Diameter:; 2.;2 In.;
Brake Pilot Diameter:; 2.;6 In.;
Flange Offset:; 1.;5 In.;
Hub Pilot Diameter:; 3.;3 In.;
Hub Bolt Circle Diameter:; 4.;2 In.;
Bolt Quantity:; 5
Bolt Hole qty:; 4
ABS Sensor:; Yes
Number of Splines:; 36

3.;About us :;
We are specialize in manufacturing wide range of automotive wheel bearing,; wheel hub bearing,; wheel bearing kits for European and American,; Japanese,; Korean automobiles:;
1.; The DAC Series wheel bearing;
2.; The Second generation wheel Hub Units;
3.; The Third generation wheel Hub bearing;
We have passed the evaluation of ISO9001:;2000 ,; TS16949 Quality management system certification and we believe that quality and service is key to success .;our company will always offer high quality products and satisfying after-sale service to all our customers .;

The main wheel bearing kits,;Wheel Hub Bearing kits we produce as following:;

VKBA1998 VKBA1466 VKBA3430 VKBA3581 VKBA506 VKBA6636 VKBA944 VKBA3689 VKBA530 VKBA7405
VKBA7472 VKBA1470 VKBA3434 VKBA3583 VKBA513 VKBA6647 VKBA949 VKBA3577 VKBA539 VKBA7414
VKBA7474 VKBA1480 VKBA3435 VKBA3585 VKBA517 VKBA6649 VKBA959 VKBA3690 VKBA540 VKBA7457
VKBA1955 VKBA1481 VKBA3444 VKBA3589 VKBA523 VKBA6666 VKBA961 VKBA3638 VKBA562 VKBA3452
 VKBA7478 VKBA1487 VKBA3445 VKBA3594 VKBA526 VKBA6667 VKBA962 VKBA3464 VKBA576 VKBA3283
VKBA3901   VKBA1491 VKBA3449 VKBA3596 VKBA528 VKBA6683 VKBA966 VKBA3648 VKBA583 VKBA6916
 VKBA1419  VKBA1498 VKBA3450 VKBA3598 VKBA529 VKBA6688 VKBA968 VKBA3618 VKBA592 VKBA3962
VKBA1422 VKBA1643 VKBA3454 VKBA3599 VKBA532 VKBA674 VKBA969 VKBA3546 VKBA614 VKBA3572
VKBA663 VKBA1906 VKBA3455 VKBA3600 VKBA534 VKBA675 VKBA975 VKBA3592 VKBA673 VKBA3593
VKBA1366  VKBA1910 VKBA3456 VKBA3602 VKBA542 VKBA678 VKBA976 VKBA3562 VKBA728 VKBA3588
VKBA1992 VKBA1911 VKBA3457 VKBA3603 VKBA559 VKBA6800 VKBA977 VKBA3659 VKBA732 VKBA3656
VKBA6751  VKBA1915 VKBA3458 VKBA3604 VKBA571 VKBA6801 VKBA6931 VKBA6565 VKBA733 VKBA3584
VKBA1301 VKBA1928 VKBA3461 VKBA3606 VKBA575 VKBA6805 VKBA6871 VKBA1340 VKBA739 VKBA3660
VKBA1306 VKBA1929 VKBA3466 VKBA3608 VKBA577 VKBA6808 VKBA940 VKBA3946 VKBA826 VKBA3575
VKBA1307 VKBA1930 VKBA3469 VKBA3613 VKBA593 VKBA6809 VKBA3528 VKBA3930 VKBA828 VKBA3556
VKBA1310 VKBA1931 VKBA3473 VKBA3614 VKBA596 VKBA6812 VKBA3647 VKBA6828 VKBA829 VKBA3661
VKBA1317 VKBA1948 VKBA3477 VKBA3620 VKBA612 VKBA6818 VKBA3441 VKBA1304 VKBA899 VKBA3674
VKBA1318 VKBA1949 VKBA3478 VKBA3624 VKBA613 VKBA6827 VKBA3657 VKBA6905 VKBA918 VKBA6999
VKBA1319 VKBA1950 VKBA3482 VKBA3631 VKBA625 VKBA6844 VKBA3520 VKBA6868 VKBA947 VKBA6924
VKBA1320 VKBA1962 VKBA3486 VKBA3637 VKBA636 VKBA685 VKBA1484 VKBA6834 VKBA948 VKBA6575
VKBA1324 VKBA1965 VKBA3489 VKBA3639 VKBA629 VKBA6856 VKBA3538 VKBA6802 VKBA957 VKBA6803
VKBA1326 VKBA1970 VKBA3491 VKBA3640 VKBA6500 VKBA686 VKBA3931 VKBA3481 VKBA958 VKBA3792
VKBA1327 VKBA1971 VKBA3492 VKBA3641 VKBA6501 VKBA6870 VKBA3428 VKBA3526 VKBA1314 VKBA7570
VKBA1328 VKBA1972 VKBA3495 VKBA3642 VKBA6506 VKBA6874 VKBA3442 VKBA1308 VKBA1321 VKBA7526
VKBA1331 VKBA1973 VKBA3496 VKBA3643 VKBA6507 VKBA6875 VKBA3587 VKBA6831 VKBA1322 VKBA7576
VKBA1333 VKBA1978 VKBA3497 VKBA3644 VKBA6509 VKBA6877 VKBA1482 VKBA7446 VKBA1346 VKBA6639
VKBA1336 VKBA1985 VKBA3500 VKBA3645 VKBA6510 VKBA6878 VKBA3981 VKBA5314 VKBA1353 VKBA6966
VKBA1338 VKBA1999 VKBA3501 VKBA3646 VKBA6515 VKBA687 VKBA3521 VKBA3270 VKBA1359 VKBA7462
VKBA1341 VKBA310 VKBA3502 VKBA3650 VKBA6519 VKBA6889 VKBA3902 VKBA1315 VKBA1361 VKBA3704
VKBA1342 VKBA3201 VKBA3503 VKBA3651 VKBA652 VKBA6898 VKBA6944 VKBA3627 VKBA1369 VKBA7591
VKBA1344 VKBA3206 VKBA3504 VKBA3652 VKBA6521 VKBA6900 VKBA3443 VKBA6923 VKBA1371 VKBA7581
VKBA1345 VKBA3215 VKBA3506 FCKIT5713 VKBA6522 VKBA6926 VKBA3300 VKBA3615 VKBA1374 VKBA7565
VKBA1347 VKBA3219 VKBA3510 VKBA3653 VKBA6524 VKBA6927 VKBA941 VKBA3309 VKBA1377 VKBA1927
VKBA1348 VKBA3220 VKBA3511 VKBA3658 VKBA6525 VKBA6928 VKBA3590 VKBA3400 VKBA1385 VKBA3975
VKBA1349 VKBA3223 VKBA3512 VKBA3667 VKBA6526 VKBA6943 VKBA919 VKBA3407 VKBA1386 VKBA6913
VKBA1351 VKBA3225 VKBA3513 VKBA3670 VKBA6527 VKBA6972 VKBA6820 VKBA3412 VKBA1393 VKBA3991
VKBA1355 VKBA3234 VKBA3514 VKBA3673 VKBA6528 VKBA6975 VKBA3951 VKBA3420 VKBA1402 VKBA6851
VKBA1356 VKBA3240 VKBA3517 VKBA3676 VKBA6530 VKBA6978 VKBA3729 VKBA3485 VKBA1403 VKBA3601
VKBA1358 VKBA3245 VKBA3519 VKBA3677 VKBA6532 VKBA6990 VKBA3625 VKBA3494 VKBA1429 VKBA898
VKBA1362 VKBA3246 VKBA3523 VKBA3678 VKBA6533 VKBA6996 VKBA3266 VKBA3508 VKBA1433 VKBA904
VKBA1364 VKBA3250 VKBA3525 VKBA3680 VKBA6539 VKBA6997 VKBA836 VKBA3522 VKBA1447 VKBA906
VKBA1366 VKBA3255 VKBA3527 VKBA3681 VKBA6540 VKBA6998 VKBA3446 VKBA3535 VKBA1462 VKBA909
VKBA1375 VKBA3256 VKBA3530 VKBA3683 VKBA6541 VKBA713 VKBA1467 VKBA3565 VKBA1463 VKBA910
VKBA1379 VKBA3257 VKBA3531 VKBA3684 VKBA6543 VKBA714 VKBA6582 VKBA3617 VKBA1488 VKBA911
VKBA1401 VKBA3272 VKBA3532 VKBA3685 VKBA6544 VKBA718 VKBA3431 VKBA3633 VKBA1495 VKBA912
VKBA1406 VKBA3281 VKBA3534 VKBA3687 VKBA6546 VKBA730 VKBA3427 VKBA3664 VKBA1499 VKBA915
VKBA1410 VKBA3293 VKBA3536 VKBA3691 VKBA6547 VKBA736 VKBA3475 VKBA3666 VKBA3205 VKBA925
VKBA1412 VKBA3298 VKBA3539 VKBA3693 VKBA6549 VKBA740 VKBA3440 VKBA3668 VKBA3217 VKBA926
VKBA1413 VKBA3305 VKBA3540 VKBA3698 VKBA6550 VKBA7403 VKBA3490 VKBA3679 VKBA3235 VKBA3715
VKBA1417 VKBA3306 VKBA3541 VKBA3703 VKBA6551 VKBA7408 VKBA6825 VKBA3682 VKBA3236 VKBA3218
VKBA1418 VKBA3307 VKBA3542 VKBA3717 VKBA6552 VKBA741 VKBA3628 VKBA3692 VKBA3237 VKBA1337
VKBA1420 VKBA3308 VKBA3543 VKBA3730 VKBA6553 VKBA7419 VKBA3550 VKBA3714 VKBA3284 VKBA6645
VKBA1430 VKBA3317 VKBA3548 VKBA3778 VKBA6556 VKBA3938 VKBA1414 VKBA3718 VKBA734 VKBA6537
VKBA1431 VKBA3332 VKBA3549 VKBA3785 VKBA6558 VKBA743 VKBA3432 VKBA3780 VKBA1443 VKBA916
VKBA1432 VKBA3349 VKBA3551 VKBA3786 VKBA6561 VKBA7437 VKBA3697 VKBA3906 VKBA3251 VKBA917
VKBA1436 VKBA3401 VKBA3552 VKBA3794 VKBA6566 VKBA7439 VKBA3595 VKBA3909 VKBA3268 VKBA6520
VKBA1438 VKBA3403 VKBA3554 VKBA3796 VKBA6570 VKBA751 VKBA6584 VKBA3922 VKBA3271 VKBA3675
VKBA1439 VKBA3404 VKBA3555 VKBA3798 VKBA6571 VKBA752 VKBA6580 VKBA3936 VKBA3459 VKBA3671
VKBA1440 VKBA3406 VKBA3560 VKBA3901 VKBA6579 VKBA754 VKBA890 VKBA3940 VKBA3545 VKBA6819
VKBA1441 VKBA3408 VKBA3561 VKBA3907 VKBA6586 VKBA756 VKBA3574 VKBA3945 VKBA3616 VKBA6830
VKBA1444 VKBA3409 VKBA3564 VKBA3929 VKBA6602 VKBA757 VKBA3553 VKBA3959 VKBA3626 VKBA6849
VKBA1445 VKBA3410 VKBA3566 VKBA3932 VKBA6616 VKBA802 VKBA3229 VKBA3965 VKBA3665 VKBA6882
VKBA1446 VKBA3413 VKBA3567 VKBA3934 VKBA6618 VKBA827 VKBA3605 VKBA3966 VKBA3908 VKBA6891
VKBA1452 VKBA3414 VKBA3568 VKBA3935 VKBA6624 VKBA840 VKBA3451 VKBA6502 VKBA6516 VKBA6938
VKBA1455 VKBA3415 VKBA3569 VKBA3937 VKBA6625 VKBA844 VKBA3439 VKBA6578 VKBA6634 VKBA7573
VKBA1458 VKBA3416 VKBA3570 VKBA3952 VKBA6627 VKBA845 VKBA3781 VKBA6640 VKBA6885 VKBA502
VKBA1459 VKBA3422 VKBA3571 VKBA3979 VKBA6629 VKBA846 VKBA3204 VKBA6642 VKBA6906 VKBA515
VKBA1460 VKBA3423 VKBA3576 VKBA3997 VKBA6632 VKBA869 VKBA3426 VKBA6643 VKBA6917 VKBA516
VKBA1465 VKBA3424 VKBA3578 VKBA504 VKBA6633 VKBA882 VKBA3202 VKBA6658 VKBA6948 VKBA3429
VKBA3580 VKBA505 VKBA6635 VKBA897 VKBA3222 VKBA6702 VKBA6950      

Applications of Spline Couplings

A spline coupling is a highly effective means of connecting 2 or more components. These types of couplings are very efficient, as they combine linear motion with rotation, and their efficiency makes them a desirable choice in numerous applications. Read on to learn more about the main characteristics and applications of spline couplings. You will also be able to determine the predicted operation and wear. You can easily design your own couplings by following the steps outlined below.

Optimal design

The spline coupling plays an important role in transmitting torque. It consists of a hub and a shaft with splines that are in surface contact without relative motion. Because they are connected, their angular velocity is the same. The splines can be designed with any profile that minimizes friction. Because they are in contact with each other, the load is not evenly distributed, concentrating on a small area, which can deform the hub surface.
Optimal spline coupling design takes into account several factors, including weight, material characteristics, and performance requirements. In the aeronautics industry, weight is an important design factor. S.A.E. and ANSI tables do not account for weight when calculating the performance requirements of spline couplings. Another critical factor is space. Spline couplings may need to fit in tight spaces, or they may be subject to other configuration constraints.
Optimal design of spline couplers may be characterized by an odd number of teeth. However, this is not always the case. If the external spline’s outer diameter exceeds a certain threshold, the optimal spline coupling model may not be an optimal choice for this application. To optimize a spline coupling for a specific application, the user may need to consider the sizing method that is most appropriate for their application.
Once a design is generated, the next step is to test the resulting spline coupling. The system must check for any design constraints and validate that it can be produced using modern manufacturing techniques. The resulting spline coupling model is then exported to an optimisation tool for further analysis. The method enables a designer to easily manipulate the design of a spline coupling and reduce its weight.
The spline coupling model 20 includes the major structural features of a spline coupling. A product model software program 10 stores default values for each of the spline coupling’s specifications. The resulting spline model is then calculated in accordance with the algorithm used in the present invention. The software allows the designer to enter the spline coupling’s radii, thickness, and orientation.


An important aspect of aero-engine splines is the load distribution among the teeth. The researchers have performed experimental tests and have analyzed the effect of lubrication conditions on the coupling behavior. Then, they devised a theoretical model using a Ruiz parameter to simulate the actual working conditions of spline couplings. This model explains the wear damage caused by the spline couplings by considering the influence of friction, misalignment, and other conditions that are relevant to the splines’ performance.
In order to design a spline coupling, the user first inputs the design criteria for sizing load carrying sections, including the external spline 40 of the spline coupling model 30. Then, the user specifies torque margin performance requirement specifications, such as the yield limit, plastic buckling, and creep buckling. The software program then automatically calculates the size and configuration of the load carrying sections and the shaft. These specifications are then entered into the model software program 10 as specification values.
Various spline coupling configuration specifications are input on the GUI screen 80. The software program 10 then generates a spline coupling model by storing default values for the various specifications. The user then can manipulate the spline coupling model by modifying its various specifications. The final result will be a computer-aided design that enables designers to optimize spline couplings based on their performance and design specifications.
The spline coupling model software program continually evaluates the validity of spline coupling models for a particular application. For example, if a user enters a data value signal corresponding to a parameter signal, the software compares the value of the signal entered to the corresponding value in the knowledge base. If the values are outside the specifications, a warning message is displayed. Once this comparison is completed, the spline coupling model software program outputs a report with the results.
Various spline coupling design factors include weight, material properties, and performance requirements. Weight is 1 of the most important design factors, particularly in the aeronautics field. ANSI and S.A.E. tables do not consider these factors when calculating the load characteristics of spline couplings. Other design requirements may also restrict the configuration of a spline coupling.


Spline couplings are a type of mechanical joint that connects 2 rotating shafts. Its 2 parts engage teeth that transfer load. Although splines are commonly over-dimensioned, they are still prone to fatigue and static behavior. These properties also make them prone to wear and tear. Therefore, proper design and selection are vital to minimize wear and tear on splines. There are many applications of spline couplings.
A key design is based on the size of the shaft being joined. This allows for the proper spacing of the keys. A novel method of hobbing allows for the formation of tapered bases without interference, and the root of the keys is concentric with the axis. These features enable for high production rates. Various applications of spline couplings can be found in various industries. To learn more, read on.
FE based methodology can predict the wear rate of spline couplings by including the evolution of the coefficient of friction. This method can predict fretting wear from simple round-on-flat geometry, and has been calibrated with experimental data. The predicted wear rate is reasonable compared to the experimental data. Friction evolution in spline couplings depends on the spline geometry. It is also crucial to consider the lubrication condition of the splines.
Using a spline coupling reduces backlash and ensures proper alignment of mated components. The shaft’s splined tooth form transfers rotation from the splined shaft to the internal splined member, which may be a gear or other rotary device. A spline coupling’s root strength and torque requirements determine the type of spline coupling that should be used.
The spline root is usually flat and has a crown on 1 side. The crowned spline has a symmetrical crown at the centerline of the face-width of the spline. As the spline length decreases toward the ends, the teeth are becoming thinner. The tooth diameter is measured in pitch. This means that the male spline has a flat root and a crowned spline.


Spindle couplings are used in rotating machinery to connect 2 shafts. They are composed of 2 parts with teeth that engage each other and transfer load. Spline couplings are commonly over-dimensioned and are prone to static and fatigue behavior. Wear phenomena are also a common problem with splines. To address these issues, it is essential to understand the behavior and predictability of these couplings.
Dynamic behavior of spline-rotor couplings is often unclear, particularly if the system is not integrated with the rotor. For example, when a misalignment is not present, the main response frequency is 1 X-rotating speed. As the misalignment increases, the system starts to vibrate in complex ways. Furthermore, as the shaft orbits depart from the origin, the magnitudes of all the frequencies increase. Thus, research results are useful in determining proper design and troubleshooting of rotor systems.
The model of misaligned spline couplings can be obtained by analyzing the stress-compression relationships between 2 spline pairs. The meshing force model of splines is a function of the system mass, transmitting torque, and dynamic vibration displacement. This model holds when the dynamic vibration displacement is small. Besides, the CZPT stepping integration method is stable and has high efficiency.
The slip distributions are a function of the state of lubrication, coefficient of friction, and loading cycles. The predicted wear depths are well within the range of measured values. These predictions are based on the slip distributions. The methodology predicts increased wear under lightly lubricated conditions, but not under added lubrication. The lubrication condition and coefficient of friction are the key factors determining the wear behavior of splines.

China Custom Wheel Hub Bearing Kit Vkba3643 for Audi, Seat, Skoda, VW     with high qualityChina Custom Wheel Hub Bearing Kit Vkba3643 for Audi, Seat, Skoda, VW     with high quality

China Good quality 1j0501611A Rear Wheel Hub Unit Bearing for Audi Seat VW with high quality

Product Description

Products Description
Car fitment:

  • AUDI
    • A3 (8L1)  [1996-2006]
    • TT (8N3)  [1998-2006]
    • TT Roadster (8N9)  [1999-2006]
    • TT 2000-2006 FWD
  • SEAT
    • BORA (1J2)  [1998-2005]
    • BORA Variant (1J6)  [1999-2005]
    • GOLF IV (1J1)  [1997-2007]
    • GOLF IV Variant (1J5)  [1999-2006]
    • NEW BEETLE (9C1, 1C1)  [1998-2571]
    • Beetle 1998-2008
    • Golf 1999-2004
    • Golf 2005 FWD
    • Jetta 1999-2005
  • VW (FAW)
    • BORA (1J2)  [2001-2006]
    • GOLF IV (1J1)  [2001-2009]

Rear Axle
Flange Diameter: 4.72 In.
Bolt Circle Diameter: 3.94 In.
Wheel Pilot Diameter: 2.02 In.
Brake Pilot Diameter: 2.04 In.
Flange Offset: 1.67 In.
Hub Pilot Diameter: 2.74 In.
Bolt Size: M14X1.5
Bolt Quantity: 5
Bolt Hole qty: N/A
ABS Sensor: Has ABS with Tone Ring Sensor
Number of Splines: N/A 

Wheel Hub Bearing

A hub bearing, also known as a wheel hub bearing, enables the wheels and attached components to rotate smoothlyand keeps the wheel attached to the car. The bearings are mounted on a wheel hub, which is located between the brake drums and the axle. 
Wheel bearings wear out over time due to age and contamination. As they wear out, excess play also develops in the bearing. The main signs of a damaged wheel hub bearing are abnormal noises and loose steering.
Our hub bearing assemblies are made from high quality materials for durability, reliability, and high performance. 
high quality seal design offers premium protection from contamination and ensures a clean, long lasting hub bearing.
Our hub bearings are precision-machined and pre-coated with an anti-corrosion lubricant for enhanced protection and performance. They are manufactured to meet or exceed expectations for performance and fit.
In addition, they are designed for quick and easy installation. Please note: Hub Bearings should always be replaced in pairs (front or rear). 
In addition, hub bearings must be torqued to vehicle specifications to prevent failure.

Solver problem:

  • Frequently unberable
  • Car Jitter
  • Power reduction
  • Car noise


  • Good Ball: Precision and dimensions are more stable.
  • Good grease: allow the bearing to roll smoother.

  • Durable quality: excellent metal material, wear-resistant and durable.

    All products are all factory full inspection , like ABS detection,noise detection, cleareance detection for completed product, vibration detection, Angular clearance detection, Waterproof and dustproof detection and so on, making products more durable,more safe and life longer.

  • Reduce abnormal noise,Stable driving
  • High security
  • Longer service life and lower maintenance cost.
  • In-situ installation: Original specification,installation in 1 step. With accurately locate mounting holes.



Why choose us to be your cooperated supplier from China?
1. A wide range of Wheel Hub Bearingfor options.
2. Quality assurance: Advanced equipment, 100% finished product check, all of the products are inpsected carefully by QC before delivery. Product is Safe, Fixed,Stable,Durable.
3. Fast delivery, Prompt response,Professional staffs.
4. The customized components also can be manufactured
5. Neutral packing, export standard carton, or as your requirement.
6. Competive price: Order a HQ container, price will be more favorable.

Related Products
1. A wide range of Radiator Cooling Fan and other parts for options.
2. Quality assurance: Advanced equipment, 100% finished product check, all of the products are inpsected carefully by QC before delivery. Product is Safe, Fixed,Stable,Durable.
3. Fast delivery, Prompt response,Professional staffs.
4. The customized components also can be manufactured
5. Neutral packing, export standard carton, or as your requirement.
6. Competive price: Order a HQ container, price will be more favorable.

VW, AUDI, BENZ, BMW, PORSHCHE, LAND ROVER,Toyota, Nissan, Mitsubishi, Honda, Mazda , Hyundai Fordetc.
1. Clutch system
2. Cooling system
3. Electrical system
4. Transmission system
5. Steering system
6. Drive system
7. Suspension system
8.Braking syste

Company Introduction

1. Is the product fit to your car model?
Please check if the parts are suitable for your model before purchase.
Or please tell us your Car Model and OE Number, and tell us the product name.

2. What you can supply to me?
We could supply all kinds of auto spare parts and accessories. Besides ,we provide OEM service, shipping service and QC service as well to make sure you get ONE-STOP purchase process from us.

3. Can you customize the products as per our request?
Yes, we do OEM and ODM. We could make the product suggestion based on your idea and budget.

4. How to get a sample from you?
All samples will be free if unit cost under 20USD,but the freight should be on your side. If you have express account like DHL,UPS etc we will send you directly, if you don’t have you can send express cost to our paypal account, any sample cost could be returned when you make order.

5. What’s your payment term?
We usually doing 30% deposit and 70% balance against copy of B/L by T/T, We also accept L/C ,D/P if total amount over $30000.

Welcome to your inqury now and built a long cooperatitive relationship with our professional service.

Windy Zhang

The Functions of Splined Shaft Bearings

Splined shafts are the most common types of bearings for machine tools. They are made of a wide variety of materials, including metals and non-metals such as Delrin and nylon. They are often fabricated to reduce deflection. The tooth profile will become deformed with time, as the shaft is used over a long period of time. Splined shafts are available in a huge range of materials and lengths.


Splined shafts are used in a variety of applications and industries. They are an effective anti-rotational device, as well as a reliable means of transmitting torque. Other types of shafts are available, including key shafts, but splines are the most convenient for transmitting torque. The following article discusses the functions of splines and why they are a superior choice. Listed below are a few examples of applications and industries in which splines are used.
Splined shafts can be of several styles, depending on the application and mechanical system in question. The differences between splined shaft styles include the design of teeth, overall strength, transfer of rotational concentricity, sliding ability, and misalignment tolerance. Listed below are a few examples of splines, as well as some of their benefits. The difference between these styles is not mutually exclusive; instead, each style has a distinct set of pros and cons.
A splined shaft is a cylindrical shaft with teeth or ridges that correspond to a specific angular position. This allows a shaft to transfer torque while maintaining angular correspondence between tracks. A splined shaft is defined as a cylindrical member with several grooves cut into its circumference. These grooves are equally spaced around the shaft and form a series of projecting keys. These features give the shaft a rounded appearance and allow it to fit perfectly into a grooved cylindrical member.
While the most common applications of splines are for shortening or extending shafts, they can also be used to secure mechanical assemblies. An “involute spline” spline has a groove that is wider than its counterparts. The result is that a splined shaft will resist separation during operation. They are an ideal choice for applications where deflection is an issue.
A spline shaft’s radial torsion load distribution is equally distributed, unless a bevel gear is used. The radial torsion load is evenly distributed and will not exert significant load concentration. If the spline couplings are not aligned correctly, the spline connection can fail quickly, causing significant fretting fatigue and wear. A couple of papers discuss this issue in more detail.


There are many different types of splined shafts. Each type features an evenly spaced helix of grooves on its outer surface. These grooves are either parallel or involute. Their shape allows them to be paired with gears and interchange rotary and linear motion. Splines are often cold-rolled or cut. The latter has increased strength compared to cut spines. These types of shafts are commonly used in applications requiring high strength, accuracy, and smoothness.
Another difference between internal and external splined shafts lies in the manufacturing process. The former is made of wood, while the latter is made of steel or a metal alloy. The process of manufacturing splined shafts involves cutting furrows into the surface of the material. Both processes are expensive and require expert skill. The main advantage of splined shafts is their adaptability to a wide range of applications.
In general, splined shafts are used in machinery where the rotation is transferred to an internal splined member. This member can be a gear or some other rotary device. These types of shafts are often packaged together as a hub assembly. Cleaning and lubricating are essential to the life of these components. If you’re using them on a daily basis, you’ll want to make sure to regularly inspect them.
Crowned splines are usually involute. The teeth of these splines form a spiral pattern. They are used for smaller diameter shafts because they add strength. Involute splines are also used on instrument drives and valve shafts. Serration standards are found in the SAE. Both kinds of splines can also contain a ball bearing for high torque. The difference between the 2 types of splines is the number of teeth on the shaft.
Internal splines have many advantages over external ones. For example, an internal spline shaft can be made using a grinding wheel instead of a CNC machine. It also uses a more accurate and economical process. Furthermore, it allows for a shorter manufacturing cycle, which is essential when splining high-speed machines. In addition, it stabilizes the relative phase between the spline and thread.

Manufacturing methods

There are several methods used to fabricate a splined shaft. Key and splined shafts are constructed from 2 separate parts that are shaped in a synchronized manner to transfer torque uniformly. Hot rolling is 1 method, while cold rolling utilizes low temperatures to form metal. Both methods enhance mechanical properties, surface finishes, and precision. The advantage of cold rolling is its cost-effectiveness.
Cold forming is 1 method, as well as machining and assembling. Cold forming is a unique process that allows the spline to be shaped to the desired shape. The resulting shape provides maximum contact area and torsional strength. Standard splines are available in standard sizes, but custom lengths can also be ordered. CZPT offers various auxiliary equipment, such as mating sleeves and flanged bushings.
Cold forging is another method. This method produces long splined shafts that are used in automobile propellers. After the spline portion is cut out, it is worked on in a hobbing machine. Work hardening enhances the root strength of the splined portion. It can be used for bearings, gears, and other mechanical components. Listed below are the manufacturing methods for splined shafts.
Parallel splines are the simplest of the splined shaft manufacturing methods. Parallel splines are usually welded to shafts, while involute splines are made of metal or non-metals. Splines are available in a wide variety of lengths and materials. The process is usually accompanied by a process called milling. The workpiece rotates to produce the serrated surface.
Splines are internal or external grooves in a splined shaft. They work in combination with keyways to transfer torque. Male and female splines are used in gears. Female and male splines correspond to 1 another to ensure proper angular correspondence. Involute splines have more surface area and thus are stronger than external splines. Moreover, they help the shaft fit into a grooved cylindrical member without misalignment.
A variety of other methods of manufacturing a splined shaft can be used to produce a splined shaft. Spline shafts can be produced using broaching and shaping, 2 precision machining methods. Broaching uses a metal tool with successively larger teeth to remove metal and create ridges and holes in the surface of a material. However, this process is expensive and requires special expertise.


The splined shaft is a mechanical component with a helix-like shape formed by the equal spacing of grooves in a circular ring. The splines can either have parallel or involute sides. The splines minimize stress concentration in stationary joints and can be used in both rotary and linear motion. In some cases, splines are rolled rather than cut. The latter is more durable than cut splines and is often used in applications requiring high strength, accuracy, and smooth finish.
Splined shafts are commonly made of carbon steel. This alloy steel has a low carbon content, making it easy to work with. Carbon steel is a great choice for splines because it is malleable. Generally, high-quality carbon steel provides a consistent motion. Steel alloys are also available that contain nickel, chromium, copper, and other metals. If you’re unsure of the right material for your application, you can consult a spline chart.
Splines are a versatile mechanical component. They are easy to cut and fit. Splines can be internal or external, with teeth positioned at equal intervals on both sides of the shaft. This allows the shaft to engage with the hub around the entire circumference of the hub. It also increases load capacity by creating a constant multiple-tooth point of contact with the hub. For this reason, they’re used extensively in rotary and linear motion.
Splined shafts are used in a wide variety of industries. CZPT Inc. offers custom and standard splined shafts for a variety of applications. When choosing a splined shaft for a specific application, consider the surrounding mated components, torque requirements, and size requirements. These 3 factors will make it the ideal choice for your rotary equipment. And you’ll be pleased with the end result!
There are many types of splines and their applications are endless. They transfer torque and angular misalignment between parts, and they also enable the axial rotation of assembled components. Therefore, splines are an essential component of machinery and are used in a wide range of applications. This type of shaft can be found in various types of machines, from household appliances to industrial machinery. So, the next time you’re looking for a splined shaft, make sure you look for a splined one.

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