Overview
The ZF 0635.302.034 AXIAL NEEDLE CAGE is a critical OEM genuine component engineered for the WG90 and WG94 series transmissions. This precision-machined cage houses a set of needle rollers that manage axial thrust loads between rotating shafts and stationary housings. Located within the planetary gear set assembly, the SKU 0635.302.034 ensures proper spacing and lubrication flow to reduce friction during high-torque operations. When installed alongside the 4661101001: TRANSMISSION HOUSING, this needle cage maintains the precise axial clearance required for smooth gear engagement. The cage also interfaces directly with the 4661301007: HOUSING to distribute load evenly across the bearing surface.
Symptoms of Failure
When the 0635.302.034 axial needle cage deteriorates, operators will notice distinct performance issues. 1. Intermittent gear slipping under load — worn needles allow axial play, causing gears to momentarily disengage during acceleration. 2. Metallic grinding noise from the transmission sump — broken cage fragments circulate through the oil system, often damaging the 4661301093: TUBE that routes lubrication. 3. Increased operating temperature — excessive friction from a collapsed cage generates heat that can warp adjacent components. 4. Oil contamination with metallic debris — visible steel particles in the filter indicate the cage has fractured, requiring immediate replacement of the 0631306174: CYLINDRICAL PIN that secures the assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0635.302.034 |
| Outer Diameter (OD) | 68.5 mm |
| Inner Diameter (ID) | 55.0 mm |
| Width / Thickness | 12.0 mm |
| Material | Case-hardened steel (16MnCr5) |
| Weight | 0.085 kg |
| OEM Reference | ZF 0635.302.034 |
| Needle Count | 22 rollers |
| Dynamic Load Rating | 28,500 N |
Compatibility
This axial needle cage is a direct fit for the WG 90 Series and WG 94 Series transmissions. Based on its dimensional profile and load rating, it is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. It serves as the primary thrust bearing in the planetary carrier assembly for these heavy-duty off-highway transmissions. Always verify the cage condition when servicing the 4661101001: TRANSMISSION HOUSING or replacing the 4661301007: HOUSING.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101001 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4661301007 | HOUSING | Intermediate support housing for shafts |
| 4661301093 | TUBE | Lubrication oil delivery conduit |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for bearing retention |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 0750100022 | SCREW PLUG | Sealing plug for oil passages |
| 0636302602 | SCREW PLUG | Magnetic drain plug for debris capture |
| 0634100633 | O-RING | Hydraulic seal for pressure circuits |
| 4661301029 | NOZZLE | Lubrication spray nozzle for gears |
| 4661301027 | NOZZLE | Secondary oil jet for planetary set |
