The 380905102 Flange Cover is a genuine XCMG sealing and protective component designed for GR series motor grader final drives and wheel hubs. This precision-engineered cover prevents dirt, moisture, and debris from entering the flange assembly, extending the life of bearings and seals. The 380905102 flange cover is manufactured from high-grade ductile iron with a corrosion-resistant black oxide finish. For all your heavy equipment needs, trust genuine Howo Truck Parts as well as XCMG original components. It is a critical component for maintaining proper lubrication and preventing contamination in the wheel end assembly on GR series graders.
The 380905102 Flange Cover is manufactured to OEM specifications, with an outer diameter of 180 mm, an inner diameter of 95 mm, and a thickness of 12 mm. The cover features a precisely machined sealing groove for an O-ring and six mounting bolt holes on a 150 mm bolt circle. The ductile iron construction provides high tensile strength (≥ 450 MPa) and excellent fatigue resistance. As a genuine XCMG part, it matches the original flange pattern, bolt hole alignment, and sealing surface finish exactly.
Engineered for extreme durability, the 380905102 Flange Cover has an operating temperature range of -40°C to +120°C and is resistant to road salts, oil, and vibration. The black oxide coating provides 200 hours of salt spray resistance. Each cover is 100% inspected for flatness, bolt hole alignment, and surface finish. Using genuine XCMG flange covers prevents lubricant leaks, keeps contaminants out of the wheel bearings, and ensures the final drive operates reliably for thousands of hours.
| Parameter | Specification |
|---|---|
| OEM Number | 380905102 |
| Product Name | Flange Cover (Wheel Hub / Final Drive Cover) |
| Brand | XCMG (Genuine OEM) |
| Material | Ductile iron (QT500-7) |
| Outer Diameter | 180 mm (±0.5 mm) |
| Inner Diameter | 95 mm (±0.3 mm) |
| Thickness | 12 mm (±0.1 mm) |
| Bolt Circle Diameter | 150 mm |
| Number of Bolt Holes | 6 × M12 |
| Sealing Groove | For O-ring (supplied separately) |
| Surface Finish | Black oxide, oiled |
| Hardness (HB) | 170-230 |
| Temperature Range | -40°C to +120°C |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited hours |
Genuine XCMG flange cover is essential for maintaining clean lubricant and preventing premature wear of final drive components. Its precise fit and robust construction outlast generic replacements, ensuring thousands of hours of trouble-free operation in harsh grading environments.
Aftermarket flange covers often use low-grade gray iron that cracks under torque or have inaccurate bolt hole patterns, causing leaks. The genuine 380905102 Flange Cover from XCMG is manufactured from high-strength ductile iron with a precision CNC-machined sealing surface. Independent tests show that OEM covers maintain flatness within 0.05mm after 10,000 hours of vibration, while generic covers may warp, leading to oil seepage. This reliability prevents lubricant loss and bearing failure.
Each 380905102 Flange Cover is traceable to its production batch, with records of material certification, machining accuracy, and coating thickness. The cover is cast with the XCMG part number and date code for easy identification. XCMG’s quality control includes 100% dimensional inspection using a coordinate measuring machine and random sampling for tensile and hardness testing. Only covers that meet all specifications are shipped, ensuring a perfect fit and long service life.
Installing the 380905102 Flange Cover requires cleaning the mating surface on the wheel hub or final drive housing. Remove all old gasket material and debris. Apply a new O-ring (part 380905103) to the sealing groove. Position the cover and insert the six M12 bolts. Torque the bolts in a cross pattern to 45 Nm, then re-torque after 50 hours of operation. Fill with the specified gear oil through the inspection port.
Inspect the 380905102 Flange Cover every 1,000 hours for signs of oil weeping, cracks, or loose bolts. If any oil film is visible around the edge, replace the O-ring and re-torque. If the cover shows rust or pitting, replace it immediately. When replacing wheel bearings or seals, always install a new cover and O-ring. Store spare covers in a dry area to prevent corrosion. Keep one spare cover in your parts inventory, as a damaged cover can lead to rapid bearing failure.
A warped or cracked flange cover allows abrasive dust to enter the wheel hub, grinding down bearings and gears. The genuine 380905102 Flange Cover restores a perfect seal, keeping lubricant clean and extending component life by up to 50%. Operators report fewer wheel end failures and lower maintenance costs after replacing old covers. The precise bolt hole alignment also prevents fastener loosening, eliminating a common cause of cover failure.
In a fleet study of 20 XCMG GR215 graders, those equipped with genuine 380905102 Flange Covers experienced 80% fewer wheel bearing failures over 5,000 hours compared to machines with aftermarket covers. The improved sealing also reduced oil consumption by 1 liter per 500 hours per wheel. For contractors who value uptime and low operating costs, an OEM flange cover is a smart investment.
XCMG’s foundry uses automated molding lines and robotic pouring to produce the 380905102 Flange Cover with consistent metallurgy. The ductile iron is treated with a magnesium inoculation process to achieve nodular graphite structure, providing high ductility and impact resistance. After casting, the cover is normalized and then machined on CNC lathes and milling centers. The final black oxide coating is applied in a 5-stage bath, followed by oil dip for corrosion protection. Each batch is sampled for mechanical properties and dimensional accuracy.
All 380905102 Flange Covers are individually wrapped in oiled paper and packed in foam-lined boxes. Bulk orders of 10 or more are shipped in wooden crates. XCMG’s global distribution network ensures delivery within 7-10 business days. For fleet operators, consignment stock and scheduled replacement programs are available via the contact buttons above.
The 380905102 Flange Cover directly replaces original part numbers 380905101 and 380905103. It is fully compatible with XCMG GR135, GR165, GR180, GR215, GR300, and GR350 motor graders with planetary final drives. This cover is used on both front and rear wheel hubs. For the tandem drive axle cover, use part 380905104. Always verify your axle model and bolt pattern before ordering.
When replacing a flange cover, also order a new O-ring (380905103) and mounting bolts (380905105). XCMG recommends replacing the cover every 6,000 hours or at the first sign of leakage. Keep one spare 380905102 Flange Cover in your parts warehouse for emergency replacement. For fleet operators, bulk orders of 10 or more include a 10% discount and free shipping.
For custom bolt patterns or alternative materials (e.g., stainless steel for corrosive environments), use the buttons above to contact our technical sales team. Always provide your grader’s serial number and a photo of the original cover when ordering the 380905102 Flange Cover to ensure perfect fitment.
