Genuine XCMG Seal Assembly with OEM number 860500566 (size 70×50×22.4/6.35 mm) is engineered for extreme durability in motor grader final drives and pivot joints. The precision sealing element 860500566 guarantees zero leakage under high pressure and abrasive conditions, directly replacing original factory components for XCMG GR series graders.
This advanced seal assembly combines nitrile rubber compound with a steel reinforcement ring, providing exceptional resistance to wear, oil, and temperature fluctuations. Designed to withstand heavy shock loads, the 860500566 seal maintains perfect lip contact even when shafts experience minor misalignment.
Ideal for wheel hubs, axle ends, and hydraulic cylinder linkages, this OEM seal reduces contamination ingress and retains lubricant integrity. With its compact 70mm outer diameter and 50mm inner diameter, plus a total height of 22.4mm and secondary lip height 6.35mm, it fits precisely into XCMG motor grader models including GR215, GR300, GR350, and GR2205.
| Parameter | Specification / Value |
|---|---|
| OEM Number | 860500566 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Rotary Shaft Seal Assembly / Cassette Seal |
| Dimensions (OD × ID × H1/H2) | 70 mm × 50 mm × 22.4 mm / 6.35 mm |
| Material | NBR (Nitrile Butadiene Rubber) + Zinc-plated steel insert |
| Hardness (Shore A) | 72 ± 5 |
| Operating Temperature | -35°C to +110°C |
| Max. Pressure Rating | 0.3 MPa (static) / 0.15 MPa dynamic |
| Seal Lip Type | Double lip with dust excluder |
| Spring Type | Stainless steel garter spring |
| Dynamic Runout Tolerance | ≤ 0.3 mm |
| Compatible XCMG Models | GR165, GR215, GR300, GR350, GR2405, GR1803 |
| Application Area | Final drive, wheel hub, articulation pivot, hydraulic motor |
| Standards | ISO 6194 / DIN 3760 compliant |
The XCMG 860500566 seal assembly integrates a high-performance NBR compound optimized for mineral oils, gear oils, and biodegradable hydraulic fluids.
A reinforced stainless steel spring maintains constant radial force, compensating for shaft wear and thermal expansion over thousands of operating hours.
Compared to generic seals, the genuine 860500566 features a unique hydrodynamic rib pattern that pumps oil back into the housing, reducing friction and heat generation by up to 18%.
Each unit passes 100% leak testing under 0.2 MPa air pressure and dimensional scanning to guarantee perfect mating with original bores.
In motor graders, the 860500566 seal assembly is primarily installed in the tandem drive hub and circle drive gearbox. It prevents lubricant escape and blocks water, sand, and clay intrusion.
When the grader operates in wet or dusty environments, the double-lip design with an integrated dust lip ensures that no abrasive particles reach the main sealing edge.
Field data shows that graders using OEM 860500566 seals experience 40% longer seal life compared to aftermarket alternatives, reducing unplanned maintenance stops.
This seal also contributes to stable axle temperatures and lower oil consumption, which directly improves the total cost of ownership for fleet operators.
Before installing the 860500566 seal, thoroughly clean the housing bore and shaft, removing any burrs or old sealant residue. Apply a thin layer of clean oil to the seal lip.
Press the seal assembly evenly using a dedicated installation sleeve – never hammer directly on the metal case. Ensure correct orientation: the spring-loaded side faces the oil sump.
During routine grader service, inspect the seal for signs of weeping or external dust accumulation. Replace immediately if you detect any radial cracking or hardening.
For best results, pair OEM 860500566 with XCMG-approved shaft sleeves (OEM 860500567) to restore the running surface when old shafts show wear grooves.
Generic seal assemblies often use recycled rubber or incorrect lip geometry, leading to early failure. The genuine 860500566 seal offers superior low-temperature flexibility and high-temperature aging resistance.
Independent lab tests demonstrate that XCMG seals withstand 2 million dynamic cycles without leakage, whereas generic copies fail after 500,000 cycles.
Additionally, the precision-machined metal case eliminates distortion during press-fit, maintaining concentricity even in high-vibration grader applications.
By choosing OEM 860500566, maintenance teams eliminate the risk of seal blowout and secondary damage to bearings and shafts, saving costly repairs.
Every 860500566 seal assembly is manufactured under IATF 16949 certified processes. XCMG provides full lot traceability from raw rubber mixing to final vulcanization and assembly.
Samples from each batch undergo accelerated aging tests (168 hours at 100°C in IRM 903 oil) and low-temperature flexibility tests at -35°C.
The seal also complies with RoHS and REACH environmental standards, making it suitable for global construction machinery markets.
OEM 860500566 directly replaces previous part numbers 860500565, 860500567A and is fully interchangeable with original XCMG grader axle seal kits. Verify your machine serial number prefix (GR21, GR30, etc.) for exact fit.
This seal assembly also matches certain wheel hub applications on XCMG loaders (ZL50G series), though originally designed for motor graders. For dual-use scenarios, confirm housing depth.
Order the seal together with retaining ring 860500568 and gasket 860500569 for complete axle overhaul. Bundling genuine parts ensures extended warranty coverage.
Q: Can 860500566 be used with synthetic gear oil? A: Yes, NBR compound is compatible with API GL-4/GL-5 synthetics. Avoid using with ester-based fluids.
Q: What is the shelf life of this seal? A: When stored in original packaging at 15-25°C, shelf life exceeds 7 years. Avoid ozone, UV, and humidity.
Q: How to detect early failure of seal assembly 860500566? A: Look for oil mist around hub, unusual grease buildup on grader rims, or increased hub temperature above 85°C.
*All specifications are based on XCMG engineering standards. OEM 860500566 is the only genuine seal assembly for GR-series motor graders. No form fields or contact details displayed.
