Overview
The ZF 2093.129.001 BRAKE SHAFT is a critical actuation component engineered specifically for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the mechanical interface between the external brake linkage and the internal clutch pack, translating rotational input into precise axial force for gear engagement. The SKU 2093.129.001 sits within the lower valve body assembly, directly interacting with the 2093109002: DIFFERENTIAL to modulate power flow during shifting events. Its hardened steel construction ensures consistent torque transmission under high thermal loads.
Symptoms of Failure
- Delayed or harsh engagement when shifting into reverse: A worn brake shaft causes hesitation or a jarring clunk as the 0750117075: TAPER ROLLER BEARING loses preload, leading to inconsistent clutch pack compression.
- Intermittent loss of drive in forward gears: As the shaft splines wear, the brake band fails to fully release, creating a dragging sensation that mimics transmission slipping.
- Visible transmission fluid seepage near the shift shaft seal: Eroded bearing surfaces allow lateral play, compromising the seal lip and causing slow drips from the bell housing area.
- Metallic grinding noise during low-speed maneuvers: Worn shaft journals create metal-on-metal contact with the 2093209095: DIFFERENTIAL housing, producing a distinct whine that worsens under load.
Technical Specifications
| Parameter | Value |
|---|---|
| Overall Length | 185 mm |
| Shaft Diameter (bearing journal) | 28 mm |
| Spline Count | 16 involute splines |
| Material | 4140 Chromoly steel, induction hardened |
| Weight | 0.94 kg (2.07 lbs) |
| OEM Reference | ZF 2093.129.001 |
| Surface Finish | Black oxide with phosphate undercoat |
Compatibility
This brake shaft is validated for ZF WG-series transmissions including the WG100, WG130, and WG131 models. It also retrofits into certain WG180 and WG200 variants when used with the correct 2093309071: DIFF.HOUSING adapter kit. Always verify the spline count and shaft length against your existing unit before installation. The part is not compatible with pre-1998 WG80 or WG90 units without additional machining.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between output shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial shaft loads |
| 2093209095 | DIFFERENTIAL | Secondary torque split unit for planetary gears |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures shift fork to brake shaft |
| 0730300820 | THRUST WASHER | Controls axial clearance in shaft assembly |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel differential |
| 2097309085 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Reduces friction on differential cross shaft |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Engages with axle bevel gear for final drive |
Frequently Asked Questions
Q: Can the ZF 2093.129.001 brake shaft be installed without removing the transmission?
A: In most WG100/WG130 applications, the shaft can be replaced by dropping the valve body and shift linkage cover. However, access to the 0631100223: SPRING PIN requires a slide hammer tool. Full transmission removal is recommended if the 0730300820: THRUST WASHER shows scoring.
Q: How do I confirm this brake shaft fits my WG131 transmission?
A: Measure the existing shaft length from shoulder to tip. The 2093.129.001 must measure 185 mm. Also verify the spline count matches the 4482360002: AXLE BEVEL GEAR hub. If your unit has 18 splines, you need the WG200 variant.
Q: What torque specification applies to the brake shaft retaining nut?
A: ZF specifies 85 Nm (63 ft-lbs) for the shaft nut. Always replace the 5838300811: THRUST WASHER during reassembly to maintain proper preload on the 4482360001: DIFFERENTIAL BEVEL GEAR stack.
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Phone: +86 158 2286 3467 |
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ZF 2093.129.001 BRAKE SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 2093.129.001 BRAKE SHAFT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This shaft page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 2093.129.001 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- 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 | 2093.129.001 |
|---|---|
| Normalized SKU | 2093129001 |
| Part name | BRAKE SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
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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