Overview
The ZF 0630.003.050 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearance and load distribution within heavy-duty ZF transmissions. Positioned between rotating shafts and stationary housings, this hardened steel washer prevents metal-to-metal contact and ensures consistent oil film thickness under high torque loads. As an integral part of the differential assembly, the SKU 0630.003.050 works in concert with the 5838109012: DIFFERENTIAL to absorb thrust forces generated during gear engagement. Its precise thickness tolerance directly influences gear mesh patterns and overall transmission longevity.
Symptoms of Failure
- Progressive oil seepage at axle housing seals: A worn 0630.003.050 washer allows excessive axial play, distorting seal contact surfaces and causing slow lubricant loss. Search query: “ZF transmission oil leak at differential housing.”
- Intermittent gear slippage under load: When the washer loses its dimensional integrity, the 0750117075: TAPER ROLLER BEARING cannot maintain proper preload, leading to momentary power loss during excavation. Search query: “transmission slipping when digging.”
- Metallic grinding noise during turns: Worn clearance from a collapsed washer causes the 2093209023: DIFFERENTIAL gears to contact the housing, producing a distinct low-frequency growl. Search query: “grinding noise ZF transmission turning.”
- Elevated operating temperature: Increased friction from improper clearance generates excess heat, detectable through infrared thermography on the 5838300626: DIFFERENTIAL HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.003.050 |
| Material | Case-hardened alloy steel (SAE 8620 equivalent) |
| Outer Diameter | 50.0 mm ±0.1 mm |
| Inner Diameter | 30.0 mm ±0.05 mm |
| Thickness | 3.0 mm ±0.02 mm |
| Surface Hardness | 58-62 HRC |
| Weight | 0.045 kg |
| OEM Reference | ZF 0630.003.050 |
Compatibility
This thrust washer is engineered for ZF WG-series powershift transmissions commonly found in construction machinery. Verified compatible models include WG180, WG200, WG210, and WG250 series. It also applies to select ZF 4WG-200 and 6WG-200 variants used in wheel loaders, graders, and telehandlers. Always cross-reference your transmission serial number with the SKU 0630.003.050 before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Allows wheel speed differentiation |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures washer alignment |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axles |
| 5838300633 | AXLE | Drives wheel hubs |
| 5838300753 | THRUST WASHER | Reduces gear end-play |
| 5838300818 | THRUST WASHER | Compensates for thermal expansion |
Frequently Asked Questions
Q: Can I reuse the 0630.003.050 washer during a rebuild?
A: No. This is a single-use crush washer. Reusing it will result in incorrect preload and premature failure of the 0750117075: TAPER ROLLER BEARING. Always install a new OEM washer.
Q: How do I verify the correct thickness of this washer?
A: Measure the old washer with a micrometer. The 0630.003.050 must be 3.0 mm ±0.02 mm. If the old washer measures below 2.95 mm, it has exceeded its service limit.
Q: Will this part fit a ZF 4WG-310 transmission?
A: No. The 0630.003.050 is designed for WG180 through WG250 series. For 4WG-310 applications, use 5838300811: THRUST WASHER instead.
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