Overview
The ZF 5838.056.009 REAR AXLE is a critical OEM genuine component engineered for the final drive assembly in heavy-duty construction machinery. This part serves as the primary torque-transmitting interface between the differential unit and the wheel hubs, ensuring precise power distribution under extreme load conditions. As a factory-spec replacement, the SKU 5838.056.009 guarantees exact fitment and metallurgical integrity for ZF transmissions operating in excavators, wheel loaders, and graders. When paired with a properly maintained 5838109022: DIFFERENTIAL, this rear axle eliminates driveline slack and maintains consistent traction in demanding environments.
Symptoms of Failure
- Oil seepage at wheel-end seals: A worn rear axle housing or damaged bearing seat allows gear oil to migrate past seals, leaving visible wet spots on the hub flange.
- Intermittent gear slipping under load: When the axle shaft splines wear, the connection to the 2095209037: DIFFERENTIAL loses engagement, causing momentary power loss during uphill travel or heavy digging.
- Abnormal lateral play in the wheel assembly: Excessive clearance between the axle and its mating 2095309059: DIFF.HOUSING produces a distinct clunking noise when reversing direction.
- Vibration at highway speeds: A bent or fatigued rear axle creates harmonic oscillations that amplify through the final drive, often misdiagnosed as tire imbalance.
Technical Specifications
| Parameter | Value |
|---|---|
| Overall Length | 685 mm |
| Flange Diameter | 165 mm |
| Shaft Diameter (bearing journal) | 55 mm |
| Material | Forged alloy steel (42CrMo4) |
| Heat Treatment | Induction hardened to 58-62 HRC |
| Weight | 12.4 kg |
| OEM Reference | 5838.056.009 |
| Spline Count | 24 involute splines |
Compatibility
This OEM rear axle is designed for integration with ZF WG180, WG200, and WG210 series transmissions commonly found in construction machinery. It directly replaces the axle shaft in single-reduction final drives where the 0750117075: TAPER ROLLER BEARING supports the outboard end. The 5838.056.009 is also compatible with select ZF APL-300 and APL-400 axle assemblies used in telescopic handlers and compact loaders. Always verify the spline count and flange bolt pattern against your existing unit before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109022 | DIFFERENTIAL | Distributes torque between left and right axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on the axle shaft |
| 2095209037 | DIFFERENTIAL | Alternative differential assembly for high-torque applications |
| 2095309059 | DIFF.HOUSING | Encloses the differential gears and supports axle bearings |
| 0631329086 | SPRING PIN | Secures the differential pinion shaft |
| 0730300820 | THRUST WASHER | Reduces friction between differential gears and housing |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from the ring gear to the axle shaft |
| 2095309081 | DIFFERENTIAL AXLE | Inner axle shaft connecting differential to wheel hub |
| 5838300811 | THRUST WASHER | Controls end-play in the differential carrier |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear set for torque multiplication |
