Overview
The ZF 5838.300.339 WHEEL STUD is a critical fastening component engineered for heavy-duty construction machinery drivelines. This OEM genuine part secures the wheel hub assembly directly to the axle flange, ensuring precise torque retention and eliminating rotational play under extreme load conditions. As a threaded stud, it serves as the primary interface between the wheel rim and the rotating hub, transferring substantial driving and braking forces. The SKU 5838.300.339 is specifically designed to withstand high shear stress and vibration common in earthmoving equipment. Within the transmission and axle assembly, this stud works in concert with the 5838109012: DIFFERENTIAL to maintain wheel alignment and power delivery integrity.
Symptoms of Failure
- Wheel wobble or excessive vibration at low speeds: A worn or stretched wheel stud allows the wheel to shift on the hub, causing noticeable shimmy during loading or turning operations.
- Lug nut loosening despite proper torque: When the stud threads become fatigued or corroded, lug nuts cannot maintain clamping force, leading to repeated loosening after short operating intervals.
- Visible thread stripping or elongation: Over-torquing or metal fatigue causes the stud’s threads to deform, preventing secure engagement with the nut and risking complete wheel detachment.
- Metallic clicking from the wheel area: A failing stud creates intermittent contact between the wheel and the 5838300626: DIFFERENTIAL HOUSING, producing audible clicks during acceleration or deceleration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 5838.300.339 |
| Material | Alloy steel, heat-treated (Grade 10.9 equivalent) |
| Thread Size | M22 x 1.5 (estimated) |
| Overall Length | 95 mm (estimated) |
| Thread Length | 45 mm (estimated) |
| Weight | 0.28 kg (estimated) |
| OEM Reference | ZF 5838.300.339 |
| Surface Finish | Zinc-plated, yellow passivated |
Compatibility
This wheel stud is primarily compatible with ZF heavy-duty axle and transmission series used in construction machinery. Estimated compatible models include the WG180, WG200, and WG250 series power dividers, as well as the AP400 and AP500 axle ranges. It is commonly found in wheel-end assemblies paired with the 0750117075: TAPER ROLLER BEARING and the 2093209023: DIFFERENTIAL unit. Always verify fitment against your specific axle housing and hub configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial wheel loads |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures shift fork or actuator linkage |
| 5838300811 | THRUST WASHER | Reduces axial friction in gear sets |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Controls axial clearance in differential |
| 5838300818 | THRUST WASHER | Provides wear surface for rotating components |
Frequently Asked Questions
Q: Can I reuse the ZF 5838.300.339 wheel stud after removing the wheel?
No. ZF recommends replacing wheel studs whenever they are removed or if any thread damage is visible. Reusing a stud can lead to reduced clamping force and potential wheel separation.
Q: What torque specification should I use for this stud?
Typical installation torque for an M22 x 1.5 stud in construction machinery ranges from 450 to 550 Nm. Always consult your specific equipment manual, as torque values vary with lubrication and hub design.
Q: How do I know if the 5838.300.339 fits my ZF axle?
Check the axle housing part number and the wheel pilot diameter. This stud is designed for ZF axles using a 22 mm thread pattern. If you have the original stud, compare thread pitch and overall length directly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
