Overview
The ZF 2093.309.070 SUN GEAR SHAFT is a critical power transmission component engineered for the planetary gear sets within ZF WG100, WG130, and WG131 transmissions. This genuine OEM part, identified by SKU 2093.309.070, functions as the central input shaft that transfers torque from the sun gear to the planetary carrier assembly. Precision-machined from high-strength alloy steel, it ensures smooth engagement and load distribution across the differential assembly. When paired with a 2093109023: DIFFERENTIAL, this shaft maintains proper gear alignment and reduces internal friction during high-torque operations.
Symptoms of Failure
- Gear slipping under load: Worn splines or surface pitting on the sun gear shaft cause intermittent power loss during acceleration, particularly in WG130 transmissions.
- Metallic grinding noise from the transmission housing: Excessive axial play or bearing race damage generates a distinct whining or grinding sound when the shaft contacts the 2093309073: DIFF.HOUSING.
- Oil contamination with metal particles: Flaking or spalling on the shaft’s hardened surface introduces ferrous debris into the lubricant, accelerating wear on the 0750117075: TAPER ROLLER BEARING.
- Hard shifting or gear engagement delay: A damaged sun gear shaft prevents proper meshing with the 2093209096: DIFFERENTIAL, causing hesitation when selecting forward or reverse gears.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.309.070 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 185 mm (estimated) |
| Spline Diameter | 32 mm (estimated) |
| Weight | 1.85 kg (estimated) |
| OEM Reference | ZF 2093.309.070 |
| Hardness | HRC 58-62 (surface) |
Compatibility
This sun gear shaft is specifically designed for ZF WG100, WG130, and WG131 series transmissions. It is also compatible with select WG180 and WG200 variants that utilize the same planetary gear architecture. For proper installation, always inspect the mating 2093109023: DIFFERENTIAL and replace the 0750117075: TAPER ROLLER BEARING simultaneously to prevent premature failure. Verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109023 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209096 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309073 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures shaft alignment |
| 0730300820 | THRUST WASHER | Reduces axial end-play |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Controls lateral clearance |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
Frequently Asked Questions
Q: Can the 2093.309.070 sun gear shaft be used in a ZF WG180 transmission?
A: Yes, it is compatible with WG180 and WG200 models that share the same planetary gear set design, but always verify your transmission’s serial number against OEM documentation.
Q: What tools are required to replace this shaft?
A: You will need a bearing puller, torque wrench, and a press for installing the new 0750117075: TAPER ROLLER BEARING. Always replace the thrust washer and spring pin during service.
Q: How do I identify a genuine ZF 2093.309.070 part?
A: Genuine parts have laser-etched part numbers on the shaft body and a consistent case-hardened surface finish. Counterfeit parts often show uneven spline wear within 500 hours of operation.
📞 Need this part? Contact our ZF specialists:
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Phone: +86 158 2286 3467 |
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ZF 2093.309.070 SUN GEAR SHAFT – Shaft RFQ Support
PartsZF supports RFQ preparation for ZF 2093.309.070 SUN GEAR SHAFT where shaft identification and documentation review are required before ordering.
Part-Number Summary
Use ZF number 2093.309.070 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: DIFFERENTIAL
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 | 2093.309.070 |
|---|---|
| Normalized SKU | 2093309070 |
| Part name | SUN GEAR 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
