Overview
The ZF 0635.355.001 BARREL ROLLER BEARING is a critical load-bearing component engineered specifically for the WG 65 Series transmission. This genuine OEM part is designed to support radial loads within the planetary gear set, ensuring smooth rotational motion and precise gear alignment under high torque conditions. Positioned between the sun gear and the planetary carrier, the SKU 0635.355.001 barrel roller bearing reduces friction and distributes stress evenly across the assembly. When paired with a properly torqued HEXAGON SCREW and a sealed TRANSMISSION HOUSING, this bearing maintains the structural integrity required for heavy-duty industrial applications.
Symptoms of Failure
- Gear slipping under load: A worn barrel roller bearing allows excessive axial play, causing the planetary gears to lose mesh engagement during acceleration or hill climbing.
- Metallic grinding noise from the transmission housing: As the bearing surface degrades, metal-on-metal contact produces a distinct whining or grinding sound, particularly in lower gears.
- Oil contamination with metallic debris: Flaking or spalling of the bearing raceways introduces fine steel particles into the transmission fluid, often visible during oil changes.
- Vibration at the output flange: Uneven roller wear transmits harmonic vibrations through the drivetrain, felt at the OUTPUT FLANGE during steady-state cruising.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0635.355.001 |
| Bearing Type | Barrel Roller Bearing (Spherical) |
| Inner Diameter | 35 mm |
| Outer Diameter | 55 mm |
| Width | 20 mm |
| Material | Case-hardened 100Cr6 steel |
| Static Load Rating | 68 kN |
| Dynamic Load Rating | 42 kN |
| Weight | 0.28 kg |
| OEM Reference | ZF 0635.355.001 |
Compatibility
This barrel roller bearing is a direct replacement for the WG 65 Series transmission family. It is also compatible with the following ZF models that share the same planetary carrier architecture: WG180, WG200, WG250, and WG300. Always verify the bearing seat dimensions in your specific transmission housing before installation. For complete assembly, ensure the OUTPUT shaft is free of scoring and the OUTPUT FLANGE is properly aligned.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105402 | OUTPUT | Transfers torque from planetary carrier to driveshaft |
| 4005303005 | OUTPUT FLANGE | Connects transmission output to universal joint |
| 4616101119 | TRANSMISSION HOUSING | Encloses gearset and bearing assembly |
| 0636011038 | HEXAGON SCREW | Secures bearing retainer to housing |
| 0636011118 | HEXAGON SCREW | Fastens output flange to shaft |
| 0636016015 | HEXAGON SCREW | Mounts planetary carrier to sun gear |
| 0631306085 | CYLINDRICAL PIN | Aligns bearing race during assembly |
| 0634313118 | O-RING | Seals bearing cavity against fluid ingress |
| 0636304019 | SCREW PLUG | Closes oil passage in housing |
| 0634801152 | SEALING RING | Prevents oil leakage at bearing interface |
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