Overview
The ZF 2093.317.051 REAR AXLE HOUSING is a critical structural component within the final drive assembly of heavy-duty construction machinery. This OEM genuine part encases the differential and axle shafts, providing the rigid support necessary to withstand extreme torque loads and harsh operating environments. The SKU 2093.317.051 serves as the primary mounting point for the wheel ends and ensures precise alignment of internal rotating assemblies. Without this housing, the transmission system cannot maintain proper gear mesh or protect internal components from contamination.
Symptoms of Failure
- Oil leaks at axle seal interfaces: When the housing develops stress fractures or pitting around the bearing journals, lubricant seeps past seals, creating visible drips under the equipment. Search query: “rear axle housing oil leak ZF transmission.”
- Abnormal whining or grinding noise during turns: A warped or cracked housing misaligns the differential carrier, causing metal-on-metal contact. Search query: “ZF axle housing noise when turning.”
- Premature bearing failure: Distortion of the housing bore accelerates wear on the 0750117075: TAPER ROLLER BEARING, leading to radial play and eventual seizure. Search query: “taper roller bearing failure ZF rear axle.”
- Vibration under load: Cracks in the housing mounting flange allow the entire axle assembly to shift, producing low-frequency vibrations felt through the chassis. Search query: “construction machinery axle vibration causes.”
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.317.051 |
| Material | Ductile cast iron (GJS-500-7) |
| Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Bearing Bore Diameter | 110 mm |
| Mounting Bolt Pattern | 8 x M16 on 180 mm PCD |
| OEM Reference | ZF 2093.317.051 |
| Max Operating Temperature | 120°C (248°F) |
Compatibility
This rear axle housing is designed for ZF WG180, WG200, and WG250 series power shift transmissions commonly found in wheel loaders, telehandlers, and graders. It directly interfaces with the 2093109029: DIFFERENTIAL carrier assembly and the 2093209094: DIFFERENTIAL unit. For complete rebuilds, pairing this housing with the 2093309078: DIFF.HOUSING ensures proper clearance for the ring gear. Always verify axle ratio and housing casting marks before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation under axial loads |
| 2093209094 | DIFFERENTIAL | Secondary differential unit for tandem axle configurations |
| 2093309078 | DIFF.HOUSING | Outer casing that encloses the differential gears |
| 0631100223 | SPRING PIN | Secures differential pinion shaft within the housing |
| 0730300820 | THRUST WASHER | Reduces axial friction between differential gears and housing |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from differential to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Driveshaft connecting differential to wheel hub |
| 5838300811 | THRUST WASHER | Controls end-play in the differential gear set |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear to change torque direction |
Frequently Asked Questions
Q: Can the ZF 2093.317.051 housing be welded if cracked?
A: Welding is not recommended for this ductile cast iron housing. Thermal stress from welding can distort the bearing bores beyond tolerance, leading to premature bearing failure. Replacement with an OEM genuine part is the only reliable solution.
Q: How do I confirm this housing fits my ZF WG200 transmission?
A: Measure the distance between the two bearing saddle centers. For WG200 models, this dimension must be 620 mm ±0.5 mm. Also verify that the housing casting includes the “WG200” identification mark near the oil fill plug boss.
Q: What torque specification applies to the housing mounting bolts?
A: Use M16 grade 10.9 bolts torqued to 240 Nm (177 ft-lb) in a cross-pattern sequence. Always apply medium-strength thread locker to prevent loosening under vibration.
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