Overview
The ZF 5838.117.025 REAR AXLE HOUSING is a structural core component within the final drive assembly of heavy-duty construction machinery. This OEM genuine part encloses the differential and axle shafts, providing the rigid mounting point for wheel hubs and absorbing extreme torsional loads during operation. As the primary load-bearing shell, it ensures precise gear alignment and protects internal lubricants from contamination. The SKU 5838.117.025 is engineered to ZF’s exacting metallurgical standards, making it a direct replacement for worn or cracked housings in demanding earthmoving applications.
Symptoms of Failure
- Visible oil seepage from axle tube seals: Cracks or porosity in the housing casting allow gear oil to escape, often seen as wet spots near the differential flange or wheel ends.
- Abnormal whining or grinding noises during turns: A warped or fractured housing misaligns the 5838109009: DIFFERENTIAL carrier, causing uneven gear mesh and audible distress.
- Excessive end-play in axle shafts: Bearing bore wear within the housing leads to lateral movement, which accelerates wear on the 0750117075: TAPER ROLLER BEARING and adjacent components.
- Recurring differential bearing failures: A distorted housing creates uneven preload, causing premature failure of the 2093209023: DIFFERENTIAL assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.117.025 |
| Material | High-tensile nodular cast iron (GGG-50) |
| Overall Length | 1,240 mm |
| Flange Diameter | 380 mm |
| Dry Weight | 68.5 kg |
| OEM Reference | ZF 5838.117.025 |
| Bolt Pattern | 12 x M16 on 295 mm PCD |
| Oil Capacity (housing only) | 4.2 liters |
Compatibility
This rear axle housing is designed for ZF’s WG series powershift transmissions used in wheel loaders and graders. It is a direct fit for the WG180, WG200, and WG211 transmission models. The housing also integrates with the 5838300626: DIFFERENTIAL HOUSING to form the complete final drive assembly. Always verify axle tube length and mounting flange orientation against your specific machine’s OEM part number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109009 | DIFFERENTIAL | Distributes torque between axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary axles |
| 5838300626 | DIFFERENTIAL HOUSING | Inner carrier for differential gears |
| 0631329088 | SPRING PIN | Locks differential gear shafts |
| 5838300811 | THRUST WASHER | Controls axial clearance in differential |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Driveshaft connecting differential to wheel |
| 5838300753 | THRUST WASHER | Reduces friction on axle bevel gear |
| 5838300818 | THRUST WASHER | Adjusts differential side gear play |
Frequently Asked Questions
Q: Can the 5838.117.025 housing be repaired if it has a small crack?
A: ZF does not recommend welding or repairing cast iron housings due to stress concentration risks. Replacement with a genuine OEM part is the only reliable solution for maintaining load capacity and gear alignment.
Q: Does this housing include the differential carrier or bearings?
A: No. The 5838.117.025 is the bare housing shell. You must install the 5838300626: DIFFERENTIAL HOUSING and 0750117075: TAPER ROLLER BEARING separately.
Q: What is the typical service life of this axle housing?
A: Under normal operating conditions in construction machinery, the housing lasts 12,000–15,000 hours. Premature failure usually results from impact damage or chronic bearing wear that distorts the bore.
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