Overview
The ZF 2093.346.021 GEAR is a precision-engineered helical gear designed for the auxiliary drive and power take-off (PTO) assemblies within the WG100, WG130, and WG131 transmission series. This OEM genuine part, identified by SKU 2093.346.021, serves as a critical torque-transfer component, meshing directly with the output shaft to modulate speed and power distribution. It sits within the rear gear train housing, where it interfaces with the DIFFERENTIAL HOUSING to ensure smooth rotational force delivery. Manufactured to ZF’s exacting tolerances, this gear is essential for maintaining synchronized gear engagement and minimizing backlash in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 2093.346.021 gear begins to wear, operators may notice distinct operational issues. Whining or howling noises during deceleration often indicate tooth surface pitting or misalignment, a common long-tail search query for “ZF WG130 gear noise.” Intermittent power loss under load—where the transmission hesitates or slips when climbing grades—signals advanced gear wear. Metallic debris in the transmission oil filter is a definitive symptom of gear spalling, requiring immediate inspection. Additionally, vibration at specific RPM ranges (typically 1200-1800 RPM) suggests uneven tooth contact, often linked to a failing TAPER ROLLER BEARING that supports the gear shaft.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.346.021 |
| Gear Type | Helical, Single-Cut |
| Material | Case-Hardened Alloy Steel (20MnCr5) |
| Module | 4.5 mm |
| Number of Teeth | 27 |
| Outside Diameter | 130.5 mm |
| Face Width | 32 mm |
| Bore Diameter | 45 mm (H7 tolerance) |
| Weight | 1.85 kg |
| OEM Reference | ZF 2093.346.021 |
| Hardness | 58-62 HRC |
Compatibility
This gear is specifically engineered for the ZF WG100, WG130, and WG131 transmission models, which are commonly found in municipal trucks, fire apparatus, and construction loaders. It is also compatible with the WG180 and WG200 series when used in auxiliary drive configurations. The gear interfaces directly with the DIFFERENTIAL assembly (part 5838109012) and the DIFFERENTIAL unit (part 2093209023) to distribute torque evenly. For proper installation, ensure the mating DIFFERENTIAL HOUSING is free of cracks or wear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports gear shaft radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque split unit for PTO |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and aligns gear and bearing assembly |
| 0631329088 | SPRING PIN | Secures gear to shaft via interference fit |
| 5838300811 | THRUST WASHER | Controls axial clearance in gear stack |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at 90-degree angle |
| 5838300633 | AXLE | Carries rotating gear and bearing loads |
| 5838300753 | THRUST WASHER | Prevents gear-to-housing contact |
| 5838300818 | THRUST WASHER | Secondary axial load distribution |
Frequently Asked Questions
Q: Can the ZF 2093.346.021 gear be replaced without removing the entire transmission?
A: Yes, in most WG100/WG130 applications, this gear is accessible by removing the PTO cover and differential housing. However, you must also inspect the TAPER ROLLER BEARING for wear during the same service interval.
Q: What is the expected lifespan of this gear under normal operating conditions?
A: With proper lubrication and load management, the case-hardened steel construction typically delivers 8,000-12,000 hours of service. Early failure is often linked to a misaligned DIFFERENTIAL HOUSING.
Q: Is this gear compatible with aftermarket differential units?
A: It is designed for OEM ZF differentials. Using non-OEM units like generic DIFFERENTIAL assemblies may cause tooth contact pattern issues and void warranty coverage.
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ZF 2093.346.021 GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 2093.346.021 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 2093.346.021 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: FRONT WH.DRIVE
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 | 2093.346.021 |
|---|---|
| Normalized SKU | 2093346021 |
| Part name | 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
