Overview
The ZF 2093.309.116 SUN GEAR SHAFT is a critical power transmission component engineered specifically for the WG100, WG130, and WG131 series transmissions. This OEM genuine part functions as the central input shaft that drives the planetary gear set, transferring torque from the turbine shaft directly into the sun gear assembly. The SKU 2093.309.116 is precision-machined to exact ZF tolerances, ensuring seamless meshing with the surrounding planetary gears and the 2093109063: DIFFERENTIAL unit. Without this shaft, the transmission cannot achieve forward or reverse motion, making it a non-negotiable element in heavy-duty driveline applications.
Symptoms of Failure
- Erratic gear engagement or slipping under load: A worn sun gear shaft causes inconsistent power delivery, often described as “gear hunting” or delayed engagement when accelerating.
- Metallic grinding or whining noise from the transmission housing: Damaged splines or bearing surfaces on the shaft produce a distinct high-pitched whine that intensifies with vehicle speed.
- Oil contamination with metallic debris: Flaking or spalling of the shaft surface introduces steel particles into the transmission fluid, visible during routine oil changes as glitter-like particles.
- Vibration through the driveline during coasting: A failing sun gear shaft creates imbalance that transmits noticeable shuddering through the chassis, especially when decelerating from highway speeds.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.309.116 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 245 mm (9.65 in) |
| Spline Diameter | 32 mm (1.26 in) |
| Sun Gear Teeth Count | 18 |
| Weight | 2.8 kg (6.17 lbs) |
| OEM Reference | ZF 2093.309.116 |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
Compatibility
This sun gear shaft is designed exclusively for ZF’s WG-series powershift transmissions. It is a direct fit for the following models: WG100, WG130, and WG131. These transmissions are commonly found in agricultural tractors, construction loaders, and industrial forklifts. The shaft interfaces directly with the 0750117075: TAPER ROLLER BEARING and the 2093209094: DIFFERENTIAL assembly. It also mounts within the 2093309078: DIFF.HOUSING for proper alignment. Always verify your transmission model tag before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109063 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports sun gear shaft radial load |
| 2093209094 | DIFFERENTIAL | Secondary differential for WG130 |
| 2093309078 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Retains shaft alignment |
| 0730300820 | THRUST WASHER | Reduces axial end-play |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheels |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hub |
| 5838300811 | THRUST WASHER | Controls gear spacing |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
Frequently Asked Questions
Q: Can I use the 2093.309.116 shaft in a WG180 transmission?
A: No. This sun gear shaft is dimensionally specific to the WG100, WG130, and WG131 models. The WG180 uses a longer shaft with a different spline count. Installing this part in a non-compatible transmission will cause immediate gear damage.
Q: What is the expected service life of this OEM sun gear shaft?
A: Under normal operating conditions with proper lubrication and load limits, the 2093.309.116 typically lasts 8,000–12,000 hours. Premature failure often results from contaminated oil or overloading beyond the transmission’s rated torque.
Q: Do I need to replace the taper roller bearing at the same time?
A: Yes. We strongly recommend replacing the 0750117075: TAPER ROLLER BEARING simultaneously, as worn bearings accelerate shaft wear and cause misalignment. Reusing old bearings voids any warranty on the new shaft.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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ZF 2093.309.116 SUN GEAR SHAFT – Shaft RFQ Support
For ZF 2093.309.116 SUN GEAR 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 2093.309.116 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 | 2093.309.116 |
|---|---|
| Normalized SKU | 2093309116 |
| 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 5838.300.106 INPUT SHAFT
