Overview
The ZF 5840.300.364 WHEEL STUD is a critical OEM genuine fastening component engineered for heavy-duty construction machinery drivelines. This stud secures the wheel hub assembly directly to the axle flange, ensuring precise torque retention and eliminating rotational play under extreme loads. Positioned at the outermost point of the final drive, the SKU 5840.300.364 interfaces with the hub and brake drum assembly to maintain wheel alignment. When paired with a DIFFERENTIAL and a DIFFERENTIAL HOUSING, this wheel stud guarantees that torque from the transmission is transferred without vibration or fastener fatigue.
Symptoms of Failure
- Wheel wobble at low speeds: A worn or stretched 5840.300.364 stud causes lateral hub movement, often misdiagnosed as bearing play. This symptom is common in ZF WG-series transmissions operating in excavators.
- Intermittent clunking during acceleration: Loose wheel studs produce a metallic knock as the hub shifts against the axle flange, directly impacting driveline stability.
- Uneven tire wear on drive axles: A failing stud alters wheel camber, accelerating shoulder wear on construction tires and reducing traction.
- Visible thread galling or corrosion: Exposure to mud and debris causes thread deformation, preventing proper torque application and risking sudden wheel separation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5840.300.364 |
| Material | Alloy steel, heat-treated (Grade 10.9 equivalent) |
| Thread Size | M20 x 1.5 (estimated) |
| Overall Length | 95 mm |
| Thread Length | 45 mm |
| Head Type | Hexagonal flange (24 mm hex) |
| Weight | 0.28 kg (0.62 lbs) |
| OEM Reference | ZF 5840.300.364 |
| Finish | Zinc-nickel plating (corrosion resistant) |
Compatibility
This genuine ZF wheel stud is designed for use in the following transmission and axle assemblies: WG180, WG200, WG210, and WG250 series. It also fits select ZF APL-300 and APL-350 planetary axles commonly found in wheel loaders and dump trucks. For optimal performance, always replace the stud in conjunction with a TAPER ROLLER BEARING and a DIFFERENTIAL to prevent hub misalignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109009 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on the hub |
| 2093209023 | DIFFERENTIAL | Secondary differential for tandem axles |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Locks differential gear shafts |
| 5838300811 | THRUST WASHER | Reduces friction between rotating gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to the wheel hub |
| 5838300633 | AXLE | Connects differential to wheel hub |
| 5838300753 | THRUST WASHER | Controls gear end-play in differential |
| 5838300818 | THRUST WASHER | Secondary axial load management |
Frequently Asked Questions
Q: Can I reuse the 5840.300.364 wheel stud after removing it?
A: No. ZF recommends replacing this stud with a new OEM part whenever the hub is disassembled, as the thread-locking compound and material integrity degrade after initial torque application.
Q: What torque specification should I use for this stud?
A: For the 5840.300.364, apply 450–500 Nm (332–369 ft-lbs) using a calibrated torque wrench. Always lubricate the threads with ZF-approved anti-seize compound to prevent galling.
Q: Does this stud fit ZF WG180 transmissions with drum brakes?
A: Yes. The 5840.300.364 is compatible with both disc and drum brake configurations on WG180, WG200, and WG210 axles, provided the hub flange thickness is within 18–22 mm.
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Phone: +86 158 2286 3467 |
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