Overview
This OEM genuine ZF 0501.323.875 rectangular ring is a precision-engineered sealing component designed to maintain hydraulic integrity within heavy-duty construction machinery transmissions. Positioned at critical junction points between the differential housing and planetary gear sets, this rectangular cross-section ring prevents fluid bypass and maintains consistent internal pressure. The SKU 0501.323.875 is manufactured to exact OEM tolerances, ensuring a tight seal that supports optimal lubrication flow across high-torque assemblies. When installed alongside a 2093109002: DIFFERENTIAL, this ring creates a reliable barrier against contamination ingress.
Symptoms of Failure
- Hydraulic fluid seepage around the differential housing — A worn 0501.323.875 rectangular ring often manifests as slow oil weeping near the transmission case mating surfaces, particularly after extended operation under load.
- Erratic gear engagement in construction machinery — When this seal degrades, internal pressure drops can cause delayed or harsh shifting in ZF transmissions, especially during cold starts.
- Contaminated transmission fluid — A failing rectangular ring allows dirt and debris to bypass the seal, leading to accelerated wear on internal components like the 0750117075: TAPER ROLLER BEARING.
- Audible whining from the differential area — Loss of lubrication pressure due to a compromised ring can create metal-on-metal noise, indicating imminent component damage.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0501.323.875 |
| Cross-Section Shape | Rectangular |
| Material | Nitrile rubber (NBR) with steel reinforcement |
| Inner Diameter | 87.5 mm |
| Outer Diameter | 95.0 mm |
| Width | 4.2 mm |
| Weight | 0.018 kg |
| OEM Reference | ZF 0501.323.875 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This rectangular ring is specifically engineered for ZF construction machinery transmissions, including the WG180, WG200, and WG250 series. It is a direct replacement for the sealing interface between the differential housing and output shaft assemblies. For optimal performance, always pair this ring with a 2093209095: DIFFERENTIAL and ensure the 2093309071: DIFF.HOUSING mating surfaces are clean and free of burrs before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on rotating shafts |
| 2093209095 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gear assembly |
| 0631100223 | SPRING PIN | Secures gears and shafts in alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction between rotating components |
| 4482360002 | AXLE BEVEL GEAR | Transfers power at right angles within the differential |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Prevents axial displacement of gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for torque splitting |
Frequently Asked Questions
Q: How do I know if my ZF 0501.323.875 rectangular ring needs replacement?
A: Look for visible oil residue around the differential housing seam, or a gradual drop in transmission fluid level without external leaks elsewhere. If you notice metallic particles in the fluid during routine changes, inspect this ring immediately.
Q: Can I reuse this ring after disassembly?
A: No. The 0501.323.875 rectangular ring is a single-use sealing component. Reusing it risks immediate leakage and potential damage to the 2093109002: DIFFERENTIAL due to compromised sealing integrity.
Q: Is this ring compatible with synthetic transmission fluids?
A: Yes. The NBR material in the 0501.323.875 is fully compatible with mineral-based and synthetic transmission oils commonly used in ZF WG-series transmissions.
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