Overview
This ZF 2093.246.020 ZAHNRAD is a genuine OEM gear component engineered for the planetary gear sets within heavy-duty construction machinery transmissions. Acting as a critical power transfer element, this gear meshes directly with adjacent shafts and planetary carriers to convert rotational speed and torque. The SKU 2093.246.020 is precision-machined to exact ZF tolerances, ensuring seamless engagement with the 2093101052 HOUSING and the 2093298063 TRANSMISSION HOUSING assembly. Without this gear, the transmission cannot maintain proper gear ratios, leading to complete drivetrain failure.
Symptoms of Failure
- Intermittent gear slipping under load: When the ZAHNRAD teeth wear or chip, the transmission loses positive engagement, causing sudden RPM surges without corresponding vehicle movement.
- Metallic grinding noise from the transmission housing: Worn gear flanks produce a distinct high-pitched whine or grinding sound, especially during acceleration or deceleration cycles.
- Contaminated transmission fluid with metal particles: As the gear surface degrades, microscopic steel fragments enter the oil, which can be observed during routine fluid changes or filter inspections.
- Hard shifting or failure to engage specific gears: Damaged gear teeth prevent the synchronizer from locking into position, resulting in delayed or impossible gear engagement.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2093.246.020 |
| Product Name | ZAHNRAD (Gear) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Tooth Profile | Helical, 20° pressure angle |
| Outer Diameter | ~180 mm (estimated) |
| Bore Diameter | ~55 mm (estimated) |
| Weight | ~3.2 kg (7.0 lbs) |
| OEM Reference | ZF 2093.246.020 |
| Surface Hardness | 58-62 HRC |
Compatibility
This genuine ZF gear is primarily designed for the WG180, WG200, and WG210 series powershift transmissions commonly found in wheel loaders, bulldozers, and excavators. It also fits select variants of the ZF 4WG-180 and 4WG-200 models. For proper installation, ensure the mating 2093301069 TRANSMISSION HOUSING is free of cracks and that the 4475280015 SCREW PLUG is torqued to specification to prevent fluid loss.
Frequently Asked Questions
Q: Can I replace only the ZAHNRAD without replacing the mating gears?
A: It is strongly recommended to replace the gear in matched sets. Worn mating gears will accelerate wear on the new 2093.246.020 gear, leading to premature failure. Always inspect the 0634304731 O-RING and 0634314235 O-RING during reassembly.
Q: How do I verify the gear is genuine OEM?
A: Genuine ZF gears feature a laser-etched part number and a 0730365092 TYPE PLATE on the housing. Counterfeit parts often have rough tooth edges and incorrect hardness.
Q: What torque is required for the retaining hardware?
A: Use a 0636015073 HEXAGON SCREW torqued to 120 Nm with thread locker. Always replace the 4475280150 SCREW PLUG if the original shows deformation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093101052 | HOUSING | Encloses the gear assembly and supports bearing loads |
| 2093298063 | TRANSMISSION HOUSING | Main structural casing for the transmission unit |
| 2093301069 | TRANSMISSION HOUSING | Secondary housing section for planetary gear sets |
| 4475280015 | SCREW PLUG | Seals fluid passages and prevents contamination |
| 0730365092 | TYPE PLATE | Identification plate with transmission serial number |
| 4475280150 | SCREW PLUG | Magnetic drain plug for ferrous debris collection |
| 0634304731 | O-RING | Seals the gear shaft bore against oil leakage |
| 2093301033 | COVER | Protects the gear cavity from debris ingress |
| 0636015073 | HEXAGON SCREW | Fastens the gear to the shaft with high tensile strength |
| 0634314235 | O-RING | Secondary seal for the housing mating surface |
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Phone: +86 158 2286 3467 |
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