Overview
The ZF 5838.117.021 REAR AXLE HOUS. is a structural core component within heavy-duty construction machinery drivetrains, specifically designed to encase and protect the differential assembly and axle shafts. This OEM genuine part serves as the rigid mounting point for the wheel ends and final drives, ensuring precise gear alignment under extreme torsional loads. The SKU 5838.117.021 is machined from high-strength cast iron to withstand the punishing conditions of earthmoving equipment. When paired with a 5838109006: DIFFERENTIAL, this housing maintains the critical clearance needed for smooth power transfer from the transmission to the wheels.
Symptoms of Failure
- Visible oil seepage at axle tube seals: Cracks or porosity in the housing casting allow gear oil to escape, leading to low lubricant levels and eventual gear damage.
- Abnormal whining or clunking from the rear axle: A warped or cracked housing misaligns the 0750117075: TAPER ROLLER BEARING seats, causing uneven bearing wear and audible noise during turns.
- Premature differential bearing failure: Distortion of the housing bore reduces preload on the 2095209037: DIFFERENTIAL assembly, accelerating wear on internal gears and thrust washers.
- Wheel hub wobble or vibration: Fatigue cracks near the spindle mounting flange compromise wheel alignment, creating dangerous instability at low operating speeds.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 5838.117.021 |
| Material | GJS-500-7 Ductile Cast Iron |
| Overall Length | 1,820 mm (71.65 in) |
| Mounting Flange Diameter | 320 mm (12.60 in) |
| Axle Tube Wall Thickness | 12.5 mm (0.49 in) |
| Weight | 185 kg (408 lbs) |
| Bearing Bore Diameter | 120 mm (4.72 in) |
| OEM Reference | ZF 5838.117.021 |
Compatibility
This rear axle housing is engineered for ZF WG180 and WG200 series power shift transmissions commonly found in wheel loaders, telehandlers, and graders. It directly supports the 2095309059: DIFF.HOUSING and integrates with final drive assemblies in models such as the ZF WG180-2, WG200-4, and WG200-6. Always verify the axle ratio and brake configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109006 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2095209037 | DIFFERENTIAL | Complete differential assembly for WG series |
| 2095309059 | DIFF.HOUSING | Outer casing for differential gears |
| 0631329086 | SPRING PIN | Secures differential pinion shaft |
| 0730300820 | THRUST WASHER | Reduces axial friction in differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to side gears |
| 5838300811 | THRUST WASHER | Controls end-play in axle assembly |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with pinion gear for speed reduction |
