Overview
The ZF 2093.117.012 REAR AXLE HOUSING is a structural core component within heavy-duty construction machinery drivelines. This OEM genuine part encases the differential assembly and final drive gears, providing rigid support and precise alignment for rotating elements under extreme torque loads. As the primary load-bearing shell in the axle system, the housing protects internal lubricants and gear sets from contamination while dissipating operational heat. The SKU 2093.117.012 is engineered to ZF’s original specifications, ensuring a direct fit and long service life in demanding environments such as wheel loaders, graders, and dump trucks.
Symptoms of Failure
- Visible oil seepage around axle seals: Cracks or porosity in the housing casting often lead to gradual lubricant loss, leaving puddles under parked equipment and requiring frequent top-offs.
- Unusual whining or grinding noises during turns: A warped or cracked housing misaligns the differential gears, causing metal-on-metal contact that produces distinct audible feedback under load.
- Premature bearing or gear wear: When the housing loses its dimensional integrity, the 0750117075: TAPER ROLLER BEARING and other rotating components experience uneven stress, accelerating failure across the entire axle assembly.
- Vibration through the chassis during operation: Structural fatigue in the housing allows excessive movement of the 2093109013: DIFFERENTIAL carrier, transmitting harsh vibrations to the vehicle frame.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.117.012 |
| Material | High-strength ductile iron (GJS-500-7) |
| Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Mounting Bolt Pattern | 12 x M16 on 180 mm PCD |
| OEM Reference | ZF 2093.117.012 |
Compatibility
This rear axle housing is designed for integration with ZF’s WG series powershift transmissions commonly found in construction machinery. It is a direct replacement for units used in the WG180, WG200, and WG211 transmission models. The housing accommodates the 2093209096: DIFFERENTIAL assembly and interfaces with the 2093309073: DIFF.HOUSING cover. Always verify axle ratio and spline count against your original part before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109013 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209096 | DIFFERENTIAL | Secondary differential unit for tandem axles |
| 2093309073 | DIFF.HOUSING | Outer cover and support for differential gears |
| 0631100223 | SPRING PIN | Secures differential pinion shaft alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction in differential assembly |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from pinion to ring gear |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Controls end-play in bevel gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Provides speed differentiation between wheels |
Frequently Asked Questions
Q: Can the ZF 2093.117.012 housing be repaired if cracked?
A: Welding or machining a cracked housing is not recommended for heavy-duty applications. The casting’s ductile iron structure loses its fatigue resistance after repair, making replacement the only reliable solution to prevent sudden axle failure.
Q: How do I know if this housing fits my specific ZF transmission?
A: Verify your transmission model (WG180, WG200, or WG211) and measure the bolt pattern. The 2093.117.012 uses a 12-bolt pattern on a 180 mm pitch circle diameter. Cross-reference your old part’s casting number to confirm compatibility.
Q: What other parts should I replace when installing a new axle housing?
A: It is best practice to install new 0750117075: TAPER ROLLER BEARING units and fresh seals. Inspect the 2093109013: DIFFERENTIAL carrier for wear, as housing damage often indicates underlying gear issues.
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