Overview
The ZF 0635.331.271 BALL BEARING is a precision-engineered OEM genuine component designed for the WG181 and WG65 series transmissions. This bearing serves as a critical support element within the planetary gearset assembly, reducing rotational friction and maintaining precise shaft alignment under heavy torque loads. As an integral part of the power flow path, the SKU 0635.331.271 ensures smooth gear engagement and minimizes energy loss during operation. When paired with a properly sealed 4616105415: OUTPUT and a robust 4616101094: TRANSMISSION HOUSING, this ball bearing delivers consistent performance in demanding industrial applications.
Symptoms of Failure
- Audible grinding or whining noise during gear shifts: A worn 0635.331.271 bearing often produces a metallic grinding sound, particularly when the transmission is under load or during deceleration.
- Vibration in the driveline at highway speeds: Excessive radial play from a degraded ball bearing causes noticeable vibration that intensifies with vehicle speed, often mistaken for tire imbalance.
- Premature wear of the output flange: A failing bearing can misalign the shaft, leading to accelerated wear on the 4616303144: OUTPUT FLANGE and surrounding seals.
- Oil contamination from metal debris: As the bearing races spall, microscopic metal particles circulate through the transmission fluid, clogging filters and damaging other components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0635.331.271 |
| Inner Diameter | 35 mm |
| Outer Diameter | 72 mm |
| Width | 17 mm |
| Material | Chrome steel (SAE 52100) |
| Weight | 0.28 kg |
| OEM Reference | ZF 0635.331.271 |
| Dynamic Load Rating | 25.5 kN |
| Static Load Rating | 15.3 kN |
| Limiting Speed | 9,500 RPM |
Compatibility
This ball bearing is engineered for the ZF WG181 and WG65 transmission families, which are commonly used in medium-duty trucks, buses, and off-highway equipment. It is also compatible with the WG180 and WG200 series models that share the same planetary carrier design. For proper installation, always replace the 0636011038: HEXAGON SCREW and inspect the mating surfaces of the transmission housing to ensure no debris compromises the new bearing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Transfers rotational power from the transmission to the driveline |
| 4616303144 | OUTPUT FLANGE | Connects the output shaft to the driveshaft yoke |
| 4616101094 | TRANSMISSION HOUSING | Encloses and supports all internal transmission components |
| 0636011038 | HEXAGON SCREW | Secures bearing retainers and covers |
| 0636011118 | HEXAGON SCREW | Fastens housing flanges and brackets |
| 0636016015 | HEXAGON SCREW | Mounts the output flange to the shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals the bearing bore against fluid leakage |
| 0732611049 | FILTER INSERT | Captures debris from worn bearings in the oil circuit |
| 0634303718 | O-RING | Seals the output flange connection point |
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