| Parameter | Specification |
|---|---|
| OEM Number | 860511076 |
| Brand | XCMG (Original Equipment) |
| Type | External elastic retaining ring (snap ring) – DIN 471 / XCMG standard |
| Material | High-carbon spring steel (C75S / 1.1248), hardened and tempered |
| Nominal Shaft Diameter | 45.00 mm |
| Groove Diameter | 43.50 mm ±0.10 mm |
| Ring Thickness (axial) | 2.00 mm ±0.05 mm |
| Free Inside Diameter | 42.80 mm (unloaded) |
| Radial Width | 4.20 mm ±0.10 mm |
| Hardness | HRC 44 – 50 |
| Surface Finish | Phosphate coated (black) for corrosion resistance |
| Max Axial Load Capacity | 25 kN (static) |
| Operating Temperature | -40°C to +150°C |
| Applicable XCMG Graders | GR135, GR165, GR180, GR200, GR2003, GR215, GR260, GR300 |
The genuine 860511076 elastic retaining ring is manufactured from C75S spring steel, which offers excellent elastic properties and fatigue resistance. The ring is hardened to HRC 44–50 and tempered to relieve internal stresses, ensuring it returns to original shape after repeated expansion and contraction. This prevents permanent deformation that can lead to component loosening.
Each ring is stamped with the XCMG logo and size marking for positive identification. The edges are rounded to prevent scoring of the shaft or housing during installation. The phosphate coating provides corrosion resistance and a dry lubricant surface that eases assembly. XCMG’s quality control includes 100% dimensional inspection using optical comparators.
In motor grader transmissions, bearings and gears are subjected to high axial thrust during gear shifts and load changes. The 860511076 ring sits in a precision-machined groove on the shaft, providing a positive stop that prevents components from moving out of position. Unlike cheaper retaining rings, the XCMG ring maintains clamping force even after multiple disassembly cycles.
Field data from GR2003 graders shows that genuine 860511076 rings last the full transmission life (over 10,000 hours) without failure. Counterfeit rings often lose tension or crack at the gap due to improper heat treatment, leading to gear misalignment and bearing damage. Choose OEM for safety and reliability.
The 860511076 ring has been tested to 500,000 expansion cycles without loss of clamping force. Dynamometer testing on transmission shafts subjected the ring to alternating axial loads of ±15 kN at 10 Hz for 1,000 hours – no deformation or cracking occurred. This exceeds DIN 471 requirements by 30%.
Salt spray testing (ASTM B117) shows no red rust after 240 hours, thanks to the phosphate coating. The ring also resists common transmission fluids (ATF, gear oil) and greases. For high-temperature applications (clutch packs), the ring maintains elasticity up to 150°C.
To install the 860511076 ring, use external snap ring pliers with 1.2 mm diameter tips. Compress the ring just enough to clear the shaft diameter, then slide it into the groove. Ensure the ring seats fully and does not protrude above the shaft surface. Never over-expand the ring beyond 1.5 times its free diameter, as this may cause permanent set.
For removal, insert plier tips into the two holes and expand carefully. Inspect the ring for wear or deformation before reusing – XCMG recommends replacing rings whenever the assembly is disassembled. Check the shaft groove for burrs or wear; a damaged groove will cause ring failure. Apply light oil to ease installation.
Counterfeit retaining rings often use low-carbon steel that lacks spring properties. They may have sharp edges that gouge shafts or incorrect groove fit that allows axial play. Genuine 860511076 rings are manufactured to XCMG’s precise groove specifications, ensuring zero backlash when installed. Each ring is batch-tested for hardness and tension.
Using OEM rings preserves transmission warranty and prevents costly failures. The 860511076 also includes easy-grip plier holes with chamfered edges. Don’t risk a gearbox rebuild – trust genuine XCMG retaining rings.
500,000 cycles tested, no loss of clamping force.
-40°C to +150°C, suitable for all climates.
Precision holes for snap ring pliers, phosphate coated for low friction.
Symptoms of a failing retaining ring include abnormal axial play of gears or bearings, metallic rattling noises from the transmission, and difficulty shifting gears. To diagnose, remove the component and check if the ring can be rotated in its groove – excessive rotation indicates a worn groove or undersized ring. Measure ring thickness; if worn below 1.90 mm, replace.
Always replace the 860511076 ring if the shaft has been removed or if the transmission is overhauled. Reusing a ring that has been expanded multiple times may lead to reduced clamping force. Also inspect the groove for burrs or deformation; if damaged, the shaft must be repaired or replaced.
Store spare rings in original packaging, away from moisture and UV light. Shelf life is 5 years. Before installation, verify that the ring matches the shaft diameter (45 mm nominal). Do not mix rings from different manufacturers – groove dimensions may vary.
XCMG’s global parts network stocks the 860511076 elastic retaining ring in regional warehouses across North America, Europe, Asia, Middle East, and Africa. Typical lead time: 2-4 business days for air freight. Bulk orders (100+ pieces) qualify for sea freight discounts and custom packaging.
For fleet customers, we offer transmission overhaul kits that include rings, bearings, seals, and gaskets. Contact our parts specialists via the buttons above to request a quote, technical drawing, or installation video. We also provide groove dimension specifications and torque sequences for complete rebuilds.
*All specifications based on XCMG original equipment standards. Always inspect groove condition before installation. OEM number 860511076 is a registered XCMG component. Images are representative; actual product may vary.
For any inquiries regarding the 860511076 XCMG Elastic Retaining Ring or other motor grader transmission components, contact our team via the “Send Email” or “Inquiry Now” buttons above. We provide genuine parts, fast delivery, and expert technical support to keep your fleet operating reliably.
