Overview
The ZF 2093.311.004 WHEEL STUD is a critical OEM genuine fastening component designed to secure the wheel hub assembly to the axle flange in heavy-duty construction machinery transmissions. This stud, identified by SKU 2093.311.004, is engineered to withstand extreme torsional loads and vibration encountered in off-road applications. It sits directly within the wheel-end assembly, anchoring the wheel to the hub and ensuring precise torque transmission from the differential to the ground. When paired with a robust 2093109024: DIFFERENTIAL, this stud maintains structural integrity under high-stress conditions.
Symptoms of Failure
- Wheel wobble or vibration during operation: A worn or stretched wheel stud causes uneven clamping force, leading to noticeable steering wheel shake or chassis vibration at low speeds.
- Loose wheel nuts despite proper torquing: If the stud threads are stripped or fatigued, wheel nuts will back off repeatedly, creating a dangerous safety hazard.
- Visible corrosion or thread galling: Exposure to moisture and road salt can cause the stud to seize or corrode, making removal difficult and compromising clamping load.
- Metallic clicking from the wheel end: A broken or cracked stud produces a distinct clicking sound during turns or acceleration as the wheel shifts on the hub.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 2093.311.004 |
| Material | High-tensile alloy steel, heat-treated |
| Thread Size | M22 x 1.5 (estimated) |
| Overall Length | 95 mm (estimated) |
| Thread Length | 45 mm (estimated) |
| Weight | 0.35 kg (estimated) |
| OEM Reference | ZF 2093.311.004 |
| Finish | Zinc-plated with clear chromate |
Compatibility
This wheel stud is designed for use in ZF WG180, WG200, and WG250 series transmissions commonly found in wheel loaders, excavators, and telehandlers. It also fits select ZF APL-300 and APL-400 axle assemblies. For proper installation, always pair this stud with a matching 0750117075: TAPER ROLLER BEARING to ensure correct hub alignment. The stud works in conjunction with the 2093209095: DIFFERENTIAL and 2093309071: DIFF.HOUSING to form a complete wheel-end assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports wheel hub radial and axial loads |
| 2093209095 | DIFFERENTIAL | Secondary differential for multi-axle drive |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures shift fork or linkage |
| 0730300820 | THRUST WASHER | Reduces axial friction in gear sets |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hub |
| 5838300811 | THRUST WASHER | Prevents axial play in differential |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Drives differential carrier rotation |
Frequently Asked Questions
Q: Can I reuse the ZF 2093.311.004 wheel stud after removal?
A: No. ZF recommends replacing wheel studs after any removal due to potential thread fatigue or micro-cracking. Always install a new OEM genuine stud to maintain clamping force and safety.
Q: What torque specification should I use for this stud?
A: For the M22 x 1.5 thread, the recommended tightening torque is 450-500 Nm (332-369 ft-lb) when using a calibrated torque wrench. Always consult your ZF transmission service manual for exact values.
Q: Does this stud fit ZF WG180 transmissions from 2010?
A: Yes, the 2093.311.004 is compatible with WG180, WG200, and WG250 series transmissions manufactured from 2005 onward. Verify your axle housing part number for cross-reference.
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