The 382302321 Cover Plate is a genuine OEM access cover manufactured by XCMG for motor graders and heavy construction equipment. This precision‑fabricated steel plate, also known as an inspection cover or housing lid, seals critical service openings on final drives, gearboxes, and hydraulic pump housings on XCMG GR series motor graders. Constructed from high‑strength low‑alloy steel with CNC‑machined bolt holes and a corrosion‑resistant primer topcoat, the 382302321 cover plate is designed to withstand extreme vibration, impact forces, and environmental exposure in demanding grading environments.
The cover plate 382302321 is a direct replacement for cracked, bent, or corroded access covers on XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. Typical applications include final drive housing inspection ports, transmission side covers, hydraulic tank access lids, and differential carrier plates. The plate features precisely located bolt holes, recessed counterbores for flush fasteners, and a gasket groove that matches the original factory specification.
A damaged or missing cover plate allows contaminants such as dust, water, and debris to enter the housing, causing accelerated wear of gears, bearings, and seals. Replacing a faulty cover with the genuine XCMG 382302321 restores structural integrity, protects internal components, and prevents costly fluid leaks.
| Parameter | Specification |
|---|---|
| OEM Number | 382302321 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Cover Plate / Access Cover / Housing Lid |
| Material | High‑strength low‑alloy steel (Q345B / S355JR equivalent) |
| Thickness | 12 mm (±0.2 mm) |
| Overall Dimensions (approx.) | 280 mm × 210 mm (custom shape) |
| Number of Bolt Holes | 8 holes (M10 thread, counterbored) |
| Gasket Groove Width | 4.5 mm (accepts 4 mm O‑ring or paper gasket) |
| Surface Finish | Epoxy primer + polyurethane top coat (RAL 1007) |
| Yield Strength | ≥ 345 MPa |
| Tensile Strength | 470 – 630 MPa |
| Flatness Tolerance | 0.15 mm over entire surface |
| Operating Temperature Range | -40°C to +80°C (environmental), +120°C intermittent |
| Standards | ISO 9001:2024, EN 1090-2 (EXC2) |
| Compatible Models | XCMG GR135, GR165, GR180, GR2003, GR215, GR260, GR300, GR350 |
| Applications | Final drive inspection covers, transmission side plates, hydraulic tank access, differential carrier lids |
The XCMG 382302321 Cover Plate serves as a protective barrier for critical service openings on the grader’s drivetrain and hydraulic system. In the final drive, the cover plate seals the planetary gear compartment, keeping gear oil inside and preventing abrasive dust from entering the rolling elements. A cracked or missing cover allows contaminants to mix with the lubricant, rapidly destroying bearings and gear teeth.
On the transmission, side cover plates like the 382302321 provide access to shift valves and clutch packs while maintaining oil pressure. A distorted plate can cause oil leakage, leading to low oil level and transmission overheating. The cover plate’s precisely machined gasket groove ensures a leak‑tight seal when used with the correct O‑ring or paper gasket.
Hydraulic tank access covers sealed with the 382302321 plate protect the fluid from contamination. Dirt entering an open port will quickly damage pumps, valves, and cylinders. The heavy‑duty construction of the XCMG cover plate resists bending from tools being dropped or from impacts with debris. Replacing a damaged cover restores system cleanliness and reliability.
Each 382302321 cover plate is laser‑cut from certified HSLA steel plate, then surface‑ground to achieve specified flatness. The bolt holes are drilled and counterbored on a CNC machining center with tool offset verification every 50 parts. The gasket groove is profiled with a carbide end mill to the exact width and depth required by the original design.
After machining, the plate is shot‑blasted to SA 2.5 finish, then coated with epoxy primer and a polyurethane top coat. The coating is tested for thickness (120‑150 µm) and adhesion (crosshatch test). Each plate is 100% inspected for flatness using a granite surface plate and dial indicator. Random samples undergo dimensional verification on a CMM.
XCMG’s quality system ensures that every cover plate meets the original engineering drawing specification. The plate is laser‑etched with the XCMG logo, part number, and date code for full traceability. The plate is packed in a protective foam‑lined carton with a desiccant bag.
To install the cover plate 382302321, clean the mating flange on the housing thoroughly. Scrape off any old gasket material and clean with a degreaser. Inspect the flange for nicks or warpage (max 0.2 mm allowed). Fit a new O‑ring or paper gasket into the groove of the cover plate.
Position the cover plate over the dowel pins or align the bolt holes. Install the eight M10 bolts (use new lock washers or thread locking compound). Torque the bolts in a cross pattern to 45 Nm (for grade 8.8 bolts) or 60 Nm (for grade 10.9). Do not exceed the specified torque – overtightening can distort the plate or strip the threads.
After installation, fill the housing with the correct lubricant and check for leakage. Run the grader for 30 minutes, then re‑torque the bolts to specification. Use a new 382302321 cover plate every time the housing is opened; do not reuse a plate that has been bent or has damaged bolt holes.
Aftermarket cover plates are often made from softer steel that bows under bolt torque, leading to oil leaks. They may also have inaccurate bolt hole locations, causing misalignment and cross‑threading. The genuine XCMG plate is precisely machined from high‑strength steel and heat‑treated for dimensional stability.
Counterfeit plates may lack the correct counterbore depth, causing bolt heads to protrude and interfere with adjacent components. The 382302321 has properly recessed bolt holes that accept standard socket head cap screws. In addition, genuine XCMG plates have a full factory paint finish that resists corrosion; aftermarket plates often rust quickly.
XCMG provides a 12‑month warranty against manufacturing defects. Using genuine parts protects your grader’s warranty and ensures a perfect fit. Choose the 382302321 genuine cover plate for reliable sealing and long service life.
Common signs that the cover plate 382302321 needs replacement: visible cracks radiating from bolt holes, rust bleeding under the paint indicating deep corrosion, warpage (plate does not sit flat on the housing), stripped threads in the bolt holes, and oil seepage even after new gaskets. Also, if the plate has been impacted by rocks or other debris, it may be bent.
Preventive replacement is recommended every 8,000 operating hours or whenever the final drive or transmission is overhauled. The cost of the cover plate is minor compared to the cost of a contaminated bearing or gear set. During inspection, place a straightedge across the plate; a gap larger than 0.3 mm indicates distortion.
Keep a spare 382302321 cover plate in your parts inventory. A broken cover can lead to sudden oil loss and catastrophic failure. Replace immediately if any cracks appear.
The 382302321 Cover Plate is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3‑7 business days worldwide. Expedited shipping (1‑2 days) is available for urgent repairs. Bulk orders (5+ plates) receive volume discounts and can be shipped via sea freight.
Each plate is supplied in a heavy‑duty cardboard box with internal foam protection. For large fleets, consignment stock programs are available to ensure immediate availability and reduced downtime. Don’t let a damaged cover plate compromise your grader’s drivetrain integrity.
Order the genuine XCMG 382302321 Cover Plate today and protect your motor grader’s final drives, transmissions, and hydraulic tanks from contamination and oil loss. This cover plate is a critical component for machine reliability. Keep a spare in your service inventory for every housing overhaul, and always replace with genuine XCMG parts.
Upgrade your motor grader’s protection with XCMG genuine cover plates. Engineered for strength, flatness, and corrosion resistance – order now and experience the quality that keeps your grader safe and productive.
