Overview
The ZF 4475.280.176 ROLLER SET is a precision-engineered OEM genuine component designed to maintain smooth rotational motion within the planetary gear sets of heavy-duty ZF transmissions. This roller set sits directly inside the transmission housing, reducing friction between rotating shafts and stationary components. As an OEM part (SKU: 4475.280.176), it ensures exact fitment and load distribution, preventing premature wear in high-torque applications. When installed alongside a robust TRANSMISSION HOUSING, this roller set forms the backbone of reliable power transfer in construction machinery.
Symptoms of Failure
- Gear Slipping Under Load: Worn rollers cause inconsistent gear engagement, leading to sudden power loss during heavy excavation or grading operations.
- Metallic Grinding Noises: Deteriorated roller surfaces produce audible grinding or whining sounds from the transmission, especially during gear shifts.
- Oil Contamination with Metal Particles: Flaking roller material mixes with transmission fluid, visible as metallic debris on the OIL LEVEL GAGE during routine checks.
- Increased Operating Temperature: Excessive friction from failed rollers generates heat, often accompanied by burnt-smelling transmission fluid.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4475.280.176 |
| Material | Case-hardened alloy steel (DIN 1.3505 equivalent) |
| Roller Diameter | 12.7 mm (0.5 in) |
| Roller Length | 25.4 mm (1.0 in) |
| Total Set Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4475.280.176 |
| Hardness Rating | HRC 58-62 |
Compatibility
This roller set is engineered for ZF WG180, WG200, and WG210 series transmissions commonly used in wheel loaders, excavators, and telescopic handlers. It also fits select ZF Ecomat 4HP and 5HP models when paired with the correct HOUSING. Always verify your transmission serial number before ordering. For secure installation, use a new SCREW PLUG to seal the housing cavity after roller replacement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101128 | TRANSMISSION HOUSING | Encloses gear sets and roller assembly |
| 4108201296 | HOUSING | Secondary housing for planetary gears |
| 4475280018 | SCREW PLUG | Seals oil passages in housing |
| 0501215601 | OIL LEVEL GAGE | Monitors fluid level and condition |
| 4108303034 | COVER | Protects roller set from debris |
| 0636015120 | HEXAGON SCREW | Secures housing components |
| 0636302015 | SCREW PLUG | Drain/fill plug for transmission |
| 0501325471 | SEALING RING | Prevents oil leaks at joints |
| 0730365280 | TYPE PLATE | Identifies transmission model |
| 4108108026 | INTERM.GEARBOX | Intermediate gearbox assembly |
Frequently Asked Questions
Q: Can I reuse the old screw plug when installing this roller set?
A: No. Always replace the SCREW PLUG with a new OEM unit to prevent oil leaks and ensure proper sealing torque.
Q: How often should this roller set be inspected?
A: Inspect every 2,000 operating hours or during major transmission overhauls. Check for pitting or discoloration on roller surfaces.
Q: Does this part fit ZF 4WG200 transmissions?
A: Yes, the 4475.280.176 roller set is compatible with 4WG200 models when used with the correct HOUSING variant. Verify your housing part number before ordering.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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