Overview
The ZF 2093.309.058 SUN GEAR SHAFT is a critical power transmission component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part functions as the central drive interface between the planetary gear set and the differential assembly, converting rotational force from the transmission output into the final drive. The SKU 2093.309.058 is precision-machined to exact ZF tolerances, ensuring optimal load distribution and minimal backlash during high-torque operations. It sits directly within the transmission housing, meshing with the 2093109024: DIFFERENTIAL to deliver smooth power delivery in heavy-duty industrial applications.
Symptoms of Failure
- Transmission gear slipping under load: A worn sun gear shaft causes intermittent engagement, leading to power loss during acceleration or uphill operation.
- Metallic grinding noise from the differential area: Damaged splines or surface pitting produce a distinct whining or grinding sound, especially during turns.
- Oil contamination with metallic debris: Flaking material from the shaft mixes with transmission fluid, visible as glitter in the oil pan during routine checks.
- Vibration through the driveline: Uneven wear on the sun gear shaft creates harmonic vibrations felt in the chassis at specific RPM ranges.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 2093.309.058 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 215 mm (estimated) |
| Spline Diameter | 38 mm (estimated) |
| Weight | 2.4 kg (estimated) |
| OEM Reference | ZF 2093.309.058 |
| Hardness | 58-62 HRC (case depth 0.8-1.2 mm) |
| Related Parts | 0631100223: SPRING PIN, 0730300820: THRUST WASHER, 4482360002: AXLE BEVEL GEAR, 2097309085: DIFFERENTIAL AXLE, 5838300811: THRUST WASHER, 4482360001: DIFFERENTIAL BEVEL GEAR |
Compatibility
This sun gear shaft is designed for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select WG180 and WG200 variants when used with the appropriate 2093309071: DIFF.HOUSING. For WG100/WG130/WG131 applications, it pairs directly with the 2093209095: DIFFERENTIAL assembly. Always verify your transmission serial number before ordering. The shaft also requires a 0750117075: TAPER ROLLER BEARING for proper axial support during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports sun gear shaft radial load |
| 2093209095 | DIFFERENTIAL | Secondary differential for WG130 |
| 2093309071 | 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 wheel hub |
| 5838300811 | THRUST WASHER | Controls gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can the 2093.309.058 sun gear shaft be used in a ZF WG180 transmission?
A: Yes, but only when paired with the correct diff.housing (part 2093309071). The WG180 requires a modified housing to accommodate the shaft length. Always cross-reference your transmission model code before installation.
Q: What torque specification is required for the sun gear shaft retaining nut?
A: ZF recommends 280-320 Nm for the main retaining nut. Use a new spring pin (0631100223) after each removal to prevent loosening under vibration.
Q: How often should the sun gear shaft be inspected during regular maintenance?
A: Inspect every 500 operating hours or during major transmission overhauls. Look for spline wear, discoloration from heat, or pitting on the bearing contact surfaces. Replace immediately if any damage is visible.
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Phone: +86 158 2286 3467 |
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ZF 2093.309.058 SUN GEAR SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 2093.309.058 SUN GEAR 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 2093.309.058 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 | 2093.309.058 |
|---|---|
| Normalized SKU | 2093309058 |
| Part name | SUN GEAR 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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