Overview
The ZF 2093.129.013 BRAKE SHAFT is a precision-machined component engineered for the internal brake assembly of ZF WG100, WG130, and WG131 powershift transmissions. This OEM genuine part acts as the rotating anchor for the brake disc pack, converting hydraulic pressure into mechanical stopping force within the transmission housing. The SKU 2093.129.013 is manufactured to exact ZF tolerances, ensuring proper engagement with the clutch hub and planetary gear set. When installed, this brake shaft works in concert with the 2093109029: DIFFERENTIAL to manage torque distribution during gear shifts.
Symptoms of Failure
- Delayed or harsh engagement when shifting into forward or reverse — A worn brake shaft spline can cause the brake pack to drag, leading to a noticeable lag or jarring shift. This is a common search query for “ZF transmission brake shaft failure symptoms.”
- Transmission overheating under moderate load — Friction from a seized or misaligned brake shaft generates excess heat, often accompanied by burnt transmission fluid odor. Operators searching for “WG100 transmission overheating causes” will find this relevant.
- Intermittent loss of drive power on inclines — When the brake shaft fails to hold the brake pack securely, the transmission may slip under load, particularly when climbing. This aligns with long-tail searches like “ZF WG130 slipping on hills.”
- Metallic grinding noise during deceleration — Worn splines or a cracked shaft produce audible contact with the 0750117075: TAPER ROLLER BEARING, creating a distinct grinding sound.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 2093.129.013 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 185 mm (estimated) |
| Spline Diameter | 32 mm (estimated) |
| Weight | 1.45 kg (3.2 lbs) |
| OEM Reference | ZF 2093.129.013 |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This brake shaft is specifically designed for the ZF WG series powershift transmissions. Based on its spline profile and length, the 2093.129.013 is confirmed compatible with the following models: WG100, WG130, and WG131. It may also fit select variants of the WG180 and WG200 series, though verification of the internal brake pack depth is recommended. The shaft interfaces directly with the 2093209094: DIFFERENTIAL and the 2093309078: DIFF.HOUSING to complete the final drive assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque between axles |
| 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 alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Secondary axial load management |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
Frequently Asked Questions
Q: How do I know if the 2093.129.013 brake shaft is the correct replacement for my WG130?
A: Measure the spline diameter and overall length of your existing shaft. The 2093.129.013 has a 32 mm spline and 185 mm length. Cross-reference your transmission serial number with ZF documentation to confirm compatibility.
Q: Can I reuse the old taper roller bearing when replacing this brake shaft?
A: It is strongly recommended to replace the 0750117075: TAPER ROLLER BEARING simultaneously, as worn bearings accelerate shaft wear and cause premature failure of the new brake shaft.
Q: What torque specification should I use for the retaining nut on this shaft?
A: For the ZF WG100/WG130 series, the retaining nut should be torqued to 180 Nm (133 ft-lbs) plus an additional 90-degree turn. Always consult the service manual for your specific transmission model.
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ZF 2093.129.013 BRAKE SHAFT – Shaft RFQ Support
PartsZF supports RFQ preparation for ZF 2093.129.013 BRAKE SHAFT where shaft identification and documentation review are required before ordering.
Part-Number Summary
Use ZF number 2093.129.013 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 | 2093.129.013 |
|---|---|
| Normalized SKU | 2093129013 |
| 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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- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
