Overview
The ZF 5838.300.585 REAR AXLE HOUSING is a structural core component within heavy-duty construction machinery drivelines. This OEM genuine part encloses the final drive gearset, supporting the axle shafts and differential assembly while withstanding extreme torsional loads and shock impacts from rough terrain operations. As the primary load-bearing casing, it maintains precise alignment for the ring gear and pinion, ensuring efficient torque transfer from the transmission to the wheels. The SKU 5838.300.585 is engineered to ZF’s original specifications, guaranteeing exact fitment and metallurgical integrity for demanding applications such as wheel loaders, graders, and dump trucks.
Symptoms of Failure
- Persistent oil seepage at axle tube seals: Cracks or porosity in the housing casting allow gear oil to escape, leading to low lubricant levels and accelerated wear on internal components like the 5838109006: DIFFERENTIAL.
- Abnormal whining or grinding from the rear axle: A warped or cracked housing misaligns the 0750117075: TAPER ROLLER BEARING seats, causing uneven gear contact and audible distress under load.
- Vibration during acceleration or turning: Structural fatigue in the housing allows the 2095209037: DIFFERENTIAL carrier to shift, producing cyclic vibration that worsens over time.
- Wheel hub play or misalignment: Bearing bore wear in the housing leads to excessive radial movement, compromising vehicle stability and tire wear patterns.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 5838.300.585 |
| Material | High-strength ductile iron (GJS-500-7) |
| Weight | 48.5 kg (107 lbs) |
| Overall Length | 1,120 mm |
| Axle Tube Diameter | 120 mm |
| Bolt Pattern | 12 x M16 on 220 mm PCD |
| OEM Reference | ZF 5838.300.585 |
Compatibility
This rear axle housing is designed for ZF’s WG series powershift transmissions commonly deployed in construction machinery. It is a direct replacement for models including the WG180, WG200, and WG250 series, as well as certain iterations of the WG310 used in heavy wheel loaders. The housing interfaces with the 2095309059: DIFF.HOUSING and accepts the final drive components listed below. Always verify your transmission model and axle configuration before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109006 | DIFFERENTIAL | Distributes torque between wheels while allowing speed differences during turns |
| 0750117075 | TAPER ROLLER BEARING | Supports axle shafts and differential carrier under radial and axial loads |
| 2095209037 | DIFFERENTIAL | Complete differential assembly for torque splitting |
| 2095309059 | DIFF.HOUSING | Encloses differential gears and pinion shaft |
| 0631329086 | SPRING PIN | Secures differential components against rotation |
| 0730300820 | THRUST WASHER | Reduces axial friction between rotating gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from differential to axle shafts |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential side gears to wheel hubs |
| 5838300811 | THRUST WASHER | Provides wear surface for differential gear thrust faces |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gears to enable differential action |
