Overview
The ZF 2093.129.018 BRAKE SHAFT is a critical actuation component within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part directly controls the parking brake mechanism by transferring mechanical force from the external lever to the internal brake band assembly. As a precision-machined shaft, it ensures positive engagement and disengagement of the brake system, preventing unintended vehicle movement when parked. The SKU 2093.129.018 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications. This shaft works in concert with the 2093109055 DIFFERENTIAL to manage torque distribution within the final drive assembly.
Symptoms of Failure
- Parking brake fails to hold on inclines: When the brake shaft wears at its engagement splines or pivot points, the brake band cannot achieve full clamping force, causing the vehicle to creep on slopes.
- Audible clicking or grinding during brake application: A worn brake shaft produces metallic noises as the cam surface or pin connection becomes sloppy, indicating imminent failure.
- Excessive free play in the parking brake lever: Operators will notice the lever travels further before resistance is felt, a direct result of shaft wear at the linkage interface.
- Oil seepage near the brake shaft housing: Deterioration of the shaft seal surface allows transmission fluid to escape, often accompanied by a drop in hydraulic pressure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 2093.129.018 |
| Material | Case-hardened alloy steel (16MnCr5 equivalent) |
| Overall Length | 185 mm (estimated) |
| Diameter (shaft body) | 28 mm |
| Spline Count | 16 involute splines |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 2093.129.018 |
| Surface Hardness | 58-62 HRC |
Compatibility
This brake shaft is specifically engineered for ZF’s WG-series powershift transmissions. Primary compatibility includes the WG100, WG130, and WG131 models commonly found in agricultural tractors, wheel loaders, and industrial forklifts. The part may also be retrofitted into certain WG180 and WG200 variants where the brake drum interface matches. Always verify the shaft’s engagement geometry against your existing component. For differential-side integration, pair this shaft with the 2093209094 DIFFERENTIAL and the 2093309078 DIFF.HOUSING for complete assembly restoration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109055 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shaft loads |
| 2093209094 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309078 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures shaft to linkage |
| 0730300820 | THRUST WASHER | Controls axial shaft play |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Drives wheel hub assembly |
| 5838300811 | THRUST WASHER | Reduces friction in gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Enables speed differentiation |
Frequently Asked Questions
Q: How do I confirm the 2093.129.018 brake shaft fits my WG131 transmission?
A: Measure the existing shaft’s overall length and spline count. The OEM part measures 185 mm with 16 splines. Cross-reference your transmission serial number against ZF’s compatibility chart for WG100/WG130/WG131 series.
Q: Can I replace only the brake shaft without replacing the 0750117075 TAPER ROLLER BEARING?
A: While possible, ZF recommends replacing the taper roller bearing simultaneously. A worn bearing accelerates shaft wear due to misalignment, reducing the service life of the new brake shaft.
Q: What torque specification applies to the brake shaft retaining nut?
A: The retaining nut should be torqued to 120 Nm (88.5 lb-ft) for WG100 series transmissions. Always consult your specific service manual, as WG131 models may require 135 Nm.
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Phone: +86 158 2286 3467 |
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ZF 2093.129.018 BRAKE SHAFT – Shaft RFQ Support
For ZF 2093.129.018 BRAKE SHAFT, send the part number, removed-part photos, and application context so PartsZF can prepare a focused sourcing response.
Part-Number Summary
Use ZF number 2093.129.018 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: TRA 16
- Illustration section: BRAKE SHAFT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 2093.129.018 |
|---|---|
| Normalized SKU | 2093129018 |
| Part name | BRAKE SHAFT |
| Product category | shaft |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
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- ZF 2094.110.014 P.T.O. SHAFT
- ZF 4642.303.002 OUTPUT SHAFT
- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
