Overview
The ZF 2098.117.022 REAR AXLE HOUS. is a critical structural component within the final drive assembly of heavy-duty construction machinery. This OEM genuine part encases the differential and crown wheel gear set, providing the rigid mounting points necessary to transfer torque from the transmission to the wheel hubs. As the primary load-bearing shell, it maintains precise gear alignment under extreme stress. The SKU 2098.117.022 is engineered to ZF’s original specifications, ensuring a direct fit and long service life in demanding environments.
Symptoms of Failure
- Oil seepage from axle housing seals: Cracks or porosity in the housing can allow gear oil to escape, leading to low lubricant levels and accelerated internal wear.
- Abnormal whining or grinding noise during turns: A warped or damaged housing misaligns the CROWN WHEEL and pinion, creating metal-on-metal contact.
- Vibration under load: Structural fatigue in the housing allows the DIFFERENTIAL assembly to shift, causing driveline shudder during acceleration.
- Contaminated gear oil (metallic debris): Internal fractures shed metal particles into the lubricant, often detected during routine oil analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2098.117.022 |
| Material | High-strength ductile iron (GJS-500-7) |
| Dry Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Mounting Bolt Pattern | 12 x M16 on 180 mm PCD |
| OEM Reference | ZF 2098.117.022 |
| Max Operating Temperature | 120°C (248°F) |
Compatibility
This rear axle housing is designed for ZF’s heavy-duty powershift transmission series, specifically the WG180 and WG200 models used in wheel loaders and graders. It also fits select WG150 variants with a 10-ton axle rating. The housing accommodates both the DIFFERENTIAL and the DIFFERENTIAL HOUSING sub-assemblies, making it a direct replacement for machines operating in mining and construction.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109042 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 2098309011 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Alternate differential assembly for WG200 |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 2098309009 | DIFFERENTIAL HOUSING | Compatible housing for WG180 series |
| 2098309031 | AXLE BEVEL GEAR | Drives the wheel hub reduction set |
| 2098309030 | AXLE BEVEL GEAR | Matched bevel gear for left-side output |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Internal gear for differential rotation |
| 12883200682 | THRUST WASHER | Reduces axial play in differential assembly |
| 0635332059 | BALL BEARING | Supports differential carrier rotation |
