Overview
The ZF 5838.022.003 REAR AXLE is a critical load-bearing and torque-transferring assembly designed for heavy-duty construction machinery. This OEM genuine part sits at the final drive stage of the transmission system, connecting the differential output directly to the wheel hubs. It ensures that rotational power from the gearbox is converted into linear traction, handling extreme axial and radial loads during excavation, grading, and hauling operations. The SKU 5838.022.003 is engineered to ZF’s original tolerances, guaranteeing a precise fit within the axle housing and seamless integration with the 5838109001: DIFFERENTIAL assembly. Without this genuine rear axle, the entire drivetrain loses structural integrity, leading to misalignment and premature wear on surrounding components.
Symptoms of Failure
- Persistent oil leaks near the wheel end: When the 5838.022.003 rear axle seal surface wears, gear oil seeps past the 0750117075: TAPER ROLLER BEARING seat, leaving visible puddles under the machine.
- Audible clunking or grinding during turns: A worn rear axle shaft causes excessive play within the 5838300128: DIFFERENTIAL HOUSING, producing metallic noises that worsen under load.
- Uneven tire wear and vibration: A bent or fatigued axle throws off wheel alignment, causing rapid tread degradation and chassis shudder at low speeds.
- Intermittent loss of drive power: Spline wear on the axle end prevents full engagement with the differential side gears, resulting in momentary slipping during acceleration.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (OEM) | 5838.022.003 |
| Overall Length | ~ 720 mm (estimated) |
| Shaft Diameter (bearing journal) | 55 mm |
| Flange Bolt Pattern | 8 x M14 on 130 mm PCD |
| Material | Forged alloy steel, induction hardened |
| Weight | ~ 18.5 kg |
| OEM Reference | ZF 5838.022.003 |
| Fastener Torque (wheel end nut) | 450 Nm |
Compatibility
This genuine rear axle is primarily used in ZF WG180, WG200, and WG211 series transmissions found in wheel loaders, telehandlers, and backhoe loaders. It also fits select models of the ZF APL-300 and APL-400 axle lines. The 5838.022.003 is designed to work with a 6-bolt wheel hub pattern and is compatible with both open and limited-slip differential configurations. Always verify the spline count (typically 28 splines) against your existing axle before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109001 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axle shaft radial and axial loads |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329086 | SPRING PIN | Locks differential pinion shaft in place |
| 5838300129 | THRUST WASHER | Reduces axial friction on differential gears |
| 5838300130 | THRUST WASHER | Secondary axial clearance shim |
| 5838300131 | AXLE BEVEL GEAR | Transfers power from pinion to ring gear |
| 5838300132 | COMPENS. STUB AXLE | Connects differential side gear to axle shaft |
| 5838300133 | COMPENS. STUB AXLE | Opposite side stub axle for balanced torque |
| 5838300134 | DIFFERENTIAL BEVEL GEAR | Engages with side gears for speed differentiation |
