Overview
The ZF 2093.070.031 TRA 20 is a precision-engineered OEM genuine component designed for the final drive assembly in heavy-duty construction machinery transmissions. This part functions as a critical load-bearing element within the differential housing, ensuring smooth torque distribution from the transmission output to the axles. The SKU 2093.070.031 is specifically manufactured to ZF’s original tolerances, making it a direct replacement for worn units in high-stress environments such as wheel loaders and graders. When installed alongside the 2093109028 DIFFERENTIAL, it maintains the structural integrity required for sustained heavy loads.
Symptoms of Failure
- Progressive oil seepage from the axle housing: A worn 2093.070.031 often compromises the seal surface, leading to visible fluid trails around the differential area during operation.
- Intermittent gear slippage under load: When the part loses its dimensional stability, you may experience sudden loss of traction or grinding noises when the machine is under full torque.
- Abnormal vibration during straight-line travel: A failing unit can cause rhythmic shaking in the driveline, particularly noticeable at lower speeds when the 0750117075 TAPER ROLLER BEARING loses its preload.
- Metallic debris in the gear oil: Internal wear of the 2093.070.031 generates fine metal particles, which can be detected during routine oil changes.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 2093.070.031 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (9.26 lbs) |
| Outer Diameter | 180 mm |
| Inner Diameter | 85 mm |
| Width | 42 mm |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
Compatibility
This genuine ZF component is engineered for the WG180, WG200, and WG211 transmission series commonly found in construction machinery. It is a direct fit for models such as the ZF 4WG-180, 4WG-200, and 6WG-211, where it interfaces with the 2093209094 DIFFERENTIAL and the 2093309078 DIFF.HOUSING. Always verify your transmission serial number before ordering, as minor revisions exist between early and late production runs.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109028 | DIFFERENTIAL | Distributes torque between left and right axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on the differential shaft |
| 2093209094 | DIFFERENTIAL | Secondary differential unit for multi-axle drive |
| 2093309078 | DIFF.HOUSING | Encloses and protects differential gears |
| 0631100223 | SPRING PIN | Secures gear alignment within the differential |
| 0730300820 | THRUST WASHER | Reduces axial friction between rotating gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from differential to axle shaft |
| 2097309085 | DIFFERENTIAL AXLE | Carries rotational force from differential to wheels |
| 5838300811 | THRUST WASHER | Controls end-play in the differential assembly |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Provides final gear reduction within the differential |
Frequently Asked Questions
Q: Can the 2093.070.031 be installed without replacing the taper roller bearing?
It is strongly recommended to replace the 0750117075 TAPER ROLLER BEARING simultaneously, as wear patterns on the bearing race can accelerate failure of the new part.
Q: How do I confirm this part fits my ZF WG180 transmission?
Check the transmission data plate for the model code (e.g., 4WG-180). The 2093.070.031 is compatible with all WG180 variants produced after 2005, but verify the differential housing revision using the 2093309078 DIFF.HOUSING part number.
Q: What torque specification is required for the retaining bolts?
ZF specifies 120 Nm for the M12 bolts securing this component. Always use new lock washers and apply thread locker to prevent loosening under vibration.
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Phone: +86 158 2286 3467 |
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