Overview
The ZF 2093.129.008 BRAKE SHAFT is a critical actuation component within the WG100, WG130, and WG131 transmission series. This genuine OEM part transfers mechanical input from the parking brake mechanism directly into the differential housing, engaging the internal locking pawl to secure the output shaft. As a precision-machined shaft, it ensures positive engagement and disengagement of the parking brake system. The SKU 2093.129.008 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and reliable long-term performance in heavy-duty industrial applications.
Symptoms of Failure
- Intermittent parking brake release: When the brake shaft wears at its engagement splines, the pawl may fail to disengage fully, causing a dragging sensation during vehicle movement.
- Oil seepage near the brake housing: A worn shaft seal surface allows transmission fluid to migrate past the housing, leaving visible drips under the drivetrain.
- Audible clicking or grinding during brake application: Excessive play in the shaft bushing creates a metallic noise when the parking brake is engaged or released.
- Increased pedal or lever travel: As the shaft’s pivot point wears, the mechanical linkage requires more movement to achieve full brake lock.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2093.129.008 |
| Overall Length | 185 mm |
| Shaft Diameter | 28 mm |
| Spline Count | 18 (male) |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 0.85 kg |
| OEM Reference | ZF 2093.129.008 |
Compatibility
This brake shaft is engineered specifically for ZF’s WG-series powershift transmissions. It is a direct replacement in the WG100, WG130, and WG131 models. While these are the primary applications, the part may also be found in certain WG180 and WG200 variants that share the same brake housing architecture. Always verify the existing part number before ordering to ensure correct fitment.
During installation, this brake shaft works in concert with several adjacent drivetrain components. The 2093109029: DIFFERENTIAL provides the primary torque distribution, while the 0750117075: TAPER ROLLER BEARING supports the shaft’s rotational load. The 2093209094: DIFFERENTIAL and 2093309078: DIFF.HOUSING complete the assembly, ensuring proper alignment and sealing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports shaft radial and axial loads |
| 2093209094 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309078 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures shaft to actuation lever |
| 0730300820 | THRUST WASHER | Reduces axial friction on shaft |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hub |
| 5838300811 | THRUST WASHER | Controls gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can I install the 2093.129.008 brake shaft without removing the differential?
A: No. The brake shaft passes through the differential housing and requires removal of the 2093309078: DIFF.HOUSING for access. Plan for a full seal replacement during this service.
Q: What is the expected service life of this brake shaft?
A: Under normal industrial duty cycles, the shaft lasts 5,000–8,000 operating hours. Frequent parking brake use in stop-start applications may reduce this interval.
Q: Does this part include the actuation lever?
A: No. The 2093.129.008 is the shaft only. The lever is a separate component, often secured with the 0631100223: SPRING PIN.
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Phone: +86 158 2286 3467 |
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ZF 2093.129.008 BRAKE SHAFT – Shaft RFQ Support
PartsZF supports RFQ preparation for ZF 2093.129.008 BRAKE SHAFT where shaft identification and documentation review are required before ordering.
Part-Number Summary
Use ZF number 2093.129.008 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 | 2093.129.008 |
|---|---|
| Normalized SKU | 2093129008 |
| 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.
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