Overview
The ZF 2093.310.039 SPUR GEAR is a precision-machined helical gear designed to transfer torque between parallel shafts within the auxiliary drive or countershaft assembly of ZF WG-series transmissions. As an OEM genuine part, SKU 2093.310.039 ensures exact tooth geometry and metallurgical consistency required for quiet, high-efficiency power flow. This spur gear directly meshes with the output shaft cluster and works in concert with the 5838109012: DIFFERENTIAL to distribute drive force to the axle. It also interfaces with the 0750117075: TAPER ROLLER BEARING which supports the gear shaft under heavy radial loads.
Symptoms of Failure
- Whining or howling noise during acceleration: Worn tooth flanks on the 2093.310.039 create a distinct high-pitched whine that increases with road speed, often mistaken for differential noise.
- Vibration in the transmission housing: Pitting or chipping on the spur gear teeth causes cyclic vibration felt through the gearshift lever or floorpan, especially under load.
- Metallic debris in transmission oil: Flaking case-hardened material from the gear surface contaminates the lubricant, visible as glitter in drained oil. This debris can damage the 2093209023: DIFFERENTIAL and other rotating components.
- Intermittent gear slippage or clunking: Severely worn teeth lose proper engagement, causing momentary loss of drive or a sharp clunk when the gear jumps under torque.
Technical Specifications
| Part Number | 2093.310.039 |
| Gear Type | Helical Spur Gear |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Number of Teeth | 39 (estimated) |
| Module | 4.5 mm (estimated) |
| Outside Diameter | ~184 mm |
| Face Width | ~38 mm |
| Bore Diameter | ~45 mm |
| Weight | ~2.8 kg |
| OEM Reference | ZF 2093.310.039 |
Compatibility
This spur gear is engineered for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also commonly used in the WG180 and WG200 variants where the auxiliary drive configuration shares the same gear geometry. The 2093.310.039 is not compatible with older ZF S-series or Ecocom series without modification. When replacing this gear, always inspect the mating 5838300626: DIFFERENTIAL HOUSING for wear or cracks caused by debris from a failing gear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports gear shaft radial loads |
| 2093209023 | DIFFERENTIAL | Secondary differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures gear to shaft |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle |
| 5838300633 | AXLE | Drives wheel hub |
| 5838300753 | THRUST WASHER | Axial load bearing surface |
| 5838300818 | THRUST WASHER | Differential side clearance |
Frequently Asked Questions
Q: Can I replace just the 2093.310.039 spur gear without replacing the mating gear?
It is strongly recommended to replace the spur gear as a matched set with its countershaft partner. Worn mating gears will accelerate wear on the new part and may cause noise. Always inspect the 0750117075: TAPER ROLLER BEARING for brinelling during replacement.
Q: What oil type should be used with this gear?
ZF recommends a GL-5 grade 80W-90 or 75W-90 synthetic gear oil. Avoid using GL-4 oils as they lack the extreme-pressure additives needed for case-hardened spur gears.
Q: How do I identify a genuine ZF 2093.310.039 versus a counterfeit?
Genuine parts have a laser-etched ZF logo and part number on the gear face, a uniform case-hardening depth of 0.8–1.2 mm, and come in ZF-branded packaging with a hologram label.
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ZF 2093.310.039 SPUR GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 2093.310.039 SPUR GEAR with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This gear 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 2093.310.039 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: P.T.O. SHAFT
- Illustration section: KIT P.T.O. 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 | 2093.310.039 |
|---|---|
| Normalized SKU | 2093310039 |
| Part name | SPUR GEAR |
| Product category | gear |
| 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.
Related Parts
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- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
