Overview
The ZF 2093.310.021 SPUR GEAR is a critical power transmission component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part transfers rotational force from the input shaft to the differential assembly, ensuring smooth torque distribution under heavy loads. As a precision-machined gear, the SKU 2093.310.021 sits directly within the gear train, meshing with the 5838109012: DIFFERENTIAL to convert engine power into axle movement. Its hardened steel construction withstands continuous stress in industrial vehicles, making it a vital element for drivetrain reliability.
Symptoms of Failure
- Whining or grinding noise during acceleration: Worn gear teeth produce a high-pitched whine that intensifies under load, often indicating surface fatigue or pitting on the spur gear.
- Intermittent gear slipping under heavy torque: A failing 2093.310.021 may cause momentary loss of power transfer, especially when climbing grades or hauling maximum payloads.
- Metallic debris in transmission fluid: Flakes or chips in the oil pan signal advanced wear, as the spur gear sheds material from its tooth flanks.
- Vibration through the driveline: Uneven gear wear creates cyclical vibrations felt in the chassis, worsening as the gear continues to degrade.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.310.021 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 1.85 kg (4.08 lbs) |
| Outside Diameter | 112 mm |
| Tooth Count | 27 |
| Module | 4.0 |
| Pressure Angle | 20° |
| OEM Reference | ZF 2093.310.021 |
Compatibility
This spur gear is specifically designed for ZF WG100, WG130, and WG131 transmissions. It also fits select WG180 and WG200 variants where the gear train shares identical tooth geometry. The part interfaces directly with the 2093209023: DIFFERENTIAL and requires proper alignment with the 5838300626: DIFFERENTIAL HOUSING for correct installation. Always verify your transmission model code before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports gear shaft rotation |
| 2093209023 | DIFFERENTIAL | Secondary differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures gear alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle |
| 5838300633 | AXLE | Connects differential to wheels |
| 5838300753 | THRUST WASHER | Controls gear end-play |
| 5838300818 | THRUST WASHER | Prevents lateral movement |
Frequently Asked Questions
Q: Can the ZF 2093.310.021 spur gear be replaced without removing the transmission?
A: In most WG100/WG130 installations, the gear is accessible after removing the differential housing cover. However, full transmission removal is recommended for proper inspection of the 0750117075: TAPER ROLLER BEARING and adjacent components.
Q: How do I confirm this gear fits my WG131 transmission?
A: Check the transmission serial number against ZF documentation. The 2093.310.021 is standard in WG131 units built after 2010, but earlier models may use a different tooth profile.
Q: What torque specification is required for the retaining nut?
A: ZF specifies 180 Nm (133 ft-lbs) for the main shaft nut securing this spur gear. Always use a new 0631329088: SPRING PIN during reassembly to prevent loosening.
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ZF 2093.310.021 SPUR GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 2093.310.021 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 2093.310.021 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
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 | 2093.310.021 |
|---|---|
| Normalized SKU | 2093310021 |
| 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
- ZF 4646.302.128 HELICAL GEAR
- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
