Overview
The ZF 2093.070.048 TRA 20 is a genuine OEM transmission component engineered for the demanding environment of construction machinery. This part functions as a critical load-bearing and torque-transfer element within the final drive assembly of ZF powershift transmissions. Specifically, the 2093.070.048 sits within the differential housing, working in concert with the axle shafts to manage power distribution from the transmission to the wheels. The SKU 2093.070.048 is precision-machined to exact factory tolerances, ensuring a direct replacement that restores original drivetrain geometry and performance in heavy earthmoving equipment.
Symptoms of Failure
When the ZF 2093.070.048 TRA 20 begins to wear, operators will notice distinct performance degradation. 1. Intermittent gear slipping under load — a common long-tail search query — occurs when the part loses its surface hardness, causing the transmission to momentarily lose engagement during excavation or grading. 2. Low-speed grinding noise from the axle housing indicates excessive play between this component and the 2093109050: DIFFERENTIAL assembly. 3. Visible metallic debris in the transmission oil filter is a telltale sign of spalling or pitting on the 2093.070.048 surface. 4. Uneven tire wear on the drive axle suggests that the part is no longer maintaining consistent rotational alignment, forcing the differential to compensate erratically.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 2093.070.048 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 98.4 mm |
| Inner Diameter | 42.0 mm |
| Width / Height | 38.2 mm |
| Surface Hardness | 58-62 HRC |
| OEM Reference | ZF TRA 20 |
Compatibility
This genuine ZF 2093.070.048 TRA 20 is designed for integration into the ZF WG180, WG200, and WG211 series powershift transmissions commonly found in wheel loaders, telehandlers, and graders. It is a direct fit for final drive assemblies that utilize the 2093209094: DIFFERENTIAL carrier. The part also interfaces with the 0750117075: TAPER ROLLER BEARING to support axial and radial loads. For machines requiring a complete housing rebuild, this component mounts securely within the 2093309078: DIFF.HOUSING.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109050 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shaft loads |
| 2093209094 | DIFFERENTIAL | Carrier assembly for gear set |
| 2093309078 | DIFF.HOUSING | Encloses differential components |
| 0631100223 | SPRING PIN | Secures gear alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shaft |
| 2097309085 | DIFFERENTIAL AXLE | Drives wheel hub rotation |
| 5838300811 | THRUST WASHER | Controls end-play clearance |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
Frequently Asked Questions
Q: Can the 2093.070.048 TRA 20 be installed without replacing the taper roller bearing?
A: It is strongly recommended to replace the 0750117075: TAPER ROLLER BEARING simultaneously, as wear on one component accelerates degradation of the other.
Q: What is the typical service interval for this part in a wheel loader?
A: Under normal construction conditions, the 2093.070.048 should be inspected every 2,000 operating hours or during any major differential overhaul.
Q: Does this part fit the ZF WG180 transmission used in Volvo L70 loaders?
A: Yes, the 2093.070.048 is compatible with the WG180 series, which is standard in many Volvo L70 and similar models.
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