Overview
The ZF 2093.073.010 REAR AXLE is a critical structural and power-delivery component within heavy-duty construction machinery drivelines. This OEM genuine part serves as the final drive housing and rotating assembly that transmits torque from the differential to the wheel hubs. Positioned directly behind the transmission output, the SKU 2093.073.010 integrates with the axle housing to support the vehicle’s load while ensuring precise rotational alignment. As a genuine ZF component, it guarantees exact fitment and metallurgical integrity for demanding off-road applications, reducing the risk of premature failure in excavators, loaders, and graders.
Symptoms of Failure
- Persistent oil seepage at axle seals: When the 2093.073.010 rear axle housing develops micro-cracks or seal surface wear, gear oil leaks become visible around the hub flanges, often accompanied by a burnt smell from overheating lubricant.
- Abnormal whining or grinding during turns: A worn rear axle bearing journal or distorted axle shaft causes a cyclical metallic noise that intensifies under load, indicating the need for immediate replacement of the 2093109002: DIFFERENTIAL assembly.
- Excessive backlash in the drivetrain: A failing rear axle allows rotational play between the wheel and differential, creating a clunking sensation when shifting between forward and reverse gears.
- Uneven tire wear and vibration: A bent or fatigued 2093.073.010 axle shaft causes lateral runout, leading to rapid tread degradation and cab vibration at low speeds.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 2093.073.010 |
| OEM Reference | ZF 2093.073.010 |
| Material | Forged alloy steel (42CrMo4) |
| Weight | 18.7 kg (41.2 lbs) |
| Overall Length | 485 mm |
| Flange Diameter | 160 mm |
| Spline Count | 24 internal splines |
| Max Torque Capacity | 12,500 Nm |
| Bearing Journal Diameter | 75 mm |
| Seal Surface Hardness | 58-62 HRC |
Compatibility
This rear axle is engineered for ZF WG180, WG200, and WG211 series transmissions commonly found in construction machinery. It directly interfaces with the 2093209095: DIFFERENTIAL and the 2093309071: DIFF.HOUSING in models such as the ZF 4WG-180, 4WG-200, and 5WG-211. The 2093.073.010 also pairs with the 0750117075: TAPER ROLLER BEARING for proper axial load management. Verify your transmission serial number against ZF application charts to confirm fitment for your specific loader or excavator model.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on axle shaft |
| 2093209095 | DIFFERENTIAL | Secondary differential unit for tandem axles |
| 2093309071 | DIFF.HOUSING | Encloses differential gears and bearings |
| 0631100223 | SPRING PIN | Locks differential gear shaft in housing |
| 0730300820 | THRUST WASHER | Reduces axial friction between gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from differential to axle shaft |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hub assembly |
| 5838300811 | THRUST WASHER | Prevents gear end-play in differential case |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear set for torque splitting |
Frequently Asked Questions
Q: Can the ZF 2093.073.010 rear axle be repaired, or must it be replaced?
A: Due to the high-stress forging and precision spline tolerances, ZF recommends replacement rather than repair. Minor seal surface wear can sometimes be machined, but structural cracks or bent shafts always require a new OEM 2093.073.010 unit.
Q: What is the typical service life of this rear axle in a wheel loader?
A: Under normal operating conditions with proper lubrication intervals, the 2093.073.010 typically lasts 8,000 to 12,000 hours. Heavy shock loads or contamination in the gear oil can reduce this lifespan significantly.
Q: Does this part include the axle bearings and seals?
A: No, the 2093.073.010 is supplied as the bare axle shaft and housing assembly. You must order the 0750117075: TAPER ROLLER BEARING and appropriate seals separately for a complete rebuild.
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