Overview
This OEM genuine ZF 2093.304.079 DOUBLE GEAR is a critical component engineered for the auxiliary drive and power take-off (PTO) systems within ZF WG100, WG130, and WG131 transmissions. It functions as a precision-machined intermediate gear that transfers rotational torque between the main shaft and the output differential assembly. The SKU 2093.304.079 is manufactured to exact OEM tolerances, ensuring seamless meshing with adjacent gears and bearings. In the transmission layout, this double gear sits directly between the input shaft and the 5838109012: DIFFERENTIAL, acting as a torque multiplier to handle heavy industrial loads without premature wear.
Symptoms of Failure
When the ZF 2093.304.079 DOUBLE GEAR begins to degrade, operators will notice distinct operational issues. Look for these specific failure indicators:
- Whining or grinding noise during gear engagement – A high-pitched metallic sound from the transmission housing, especially under load, indicates worn gear teeth or pitting on the double gear surface.
- Intermittent power loss to the PTO – If the auxiliary output loses torque intermittently, the double gear may have chipped teeth or excessive backlash, failing to transfer consistent power to the 2093209023: DIFFERENTIAL.
- Metal debris in transmission fluid – Fine metallic particles found during routine oil changes are a clear sign of gear surface fatigue or spalling on the double gear’s contact faces.
- Vibration through the gear lever or chassis – Unbalanced rotation caused by uneven wear on the double gear can transmit noticeable vibrations, often worsening at higher RPMs.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 2093.304.079 |
| Type | Double Gear (Helical Cut) |
| Material | Case-Hardened Alloy Steel (20MnCr5) |
| Outer Diameter | 142 mm |
| Inner Bore Diameter | 35 mm |
| Overall Width | 48 mm |
| Number of Teeth (Primary) | 23 |
| Number of Teeth (Secondary) | 31 |
| Weight | 2.85 kg |
| OEM Reference | ZF 2093.304.079 |
Compatibility
This OEM genuine double gear is specifically designed for ZF’s WG-series industrial transmissions. It is a direct fit for the following models:
- ZF WG100 – All variants (standard and heavy-duty)
- ZF WG130 – All variants (including WG130/2)
- ZF WG131 – All variants (including WG131/1)
For proper installation, this gear must be paired with a compatible 0750117075: TAPER ROLLER BEARING to support axial loads, and the assembly should be housed within a 5838300626: DIFFERENTIAL HOUSING to maintain proper gear alignment and lubrication.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to the output shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on the gear shaft |
| 2093209023 | DIFFERENTIAL | Secondary differential for multi-axle drive |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and protects the gear assembly |
| 0631329088 | SPRING PIN | Secures gear alignment on the shaft |
| 5838300811 | THRUST WASHER | Reduces axial friction between rotating components |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at a 90-degree angle to the axle |
| 5838300633 | AXLE | Rotates the wheel hub assembly |
| 5838300753 | THRUST WASHER | Prevents metal-to-metal contact in the gear stack |
| 5838300818 | THRUST WASHER | Provides wear surface for the differential side gears |
Frequently Asked Questions
Q: Can the ZF 2093.304.079 double gear be used in a WG200 transmission?
A: No, this part is specifically designed for the WG100, WG130, and WG131 series. The WG200 uses a different gear pitch and shaft diameter. Always verify your transmission model before ordering.
Q: What is the expected service life of this double gear under normal operating conditions?
A: With proper lubrication and regular oil changes, this OEM gear typically lasts 8,000–12,000 operating hours. Heavy shock loads or contaminated fluid will significantly reduce its lifespan.
Q: Do I need to replace the taper roller bearing at the same time as the double gear?
A: Yes, it is strongly recommended. The 0750117075: TAPER ROLLER BEARING often wears concurrently with the gear, and reusing an old bearing can cause premature failure of the new double gear due to misalignment.
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ZF 2093.304.079 DOUBLE GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 2093.304.079 DOUBLE 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 2093.304.079 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: MAIN 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 | 2093.304.079 |
|---|---|
| Normalized SKU | 2093304079 |
| Part name | DOUBLE GEAR |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: diagram. 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
