The genuine XCMG 273100575 End Cover is a precision‑machined cast iron closure designed for motor grader transmission housings, axle carriers, and planetary final drives. This OEM 273100575 end cover seals the open ends of gearcases, retaining lubricant and preventing contamination ingress. Manufactured from high‑strength ductile iron with reinforced ribbing and precision‑ground gasket faces, the XCMG end cover withstands internal pressure, thermal cycling, and shock loads typical of grading applications.
The 273100575 end cover is used on XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. It is typically bolted to the rear of the transmission case, the outer ends of drive axles, or the steering gearbox housing. A cracked, warped, or leaking end cover allows oil loss and dirt entry, leading to premature bearing failure.
Replacing a damaged cover with genuine XCMG 273100575 restores oil‑tight integrity, protects internal components, and ensures proper bearing preload. This component is critical for maintaining drivetrain reliability and extending overhaul intervals.
| Parameter | Specification |
|---|---|
| OEM Number | 273100575 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | End Cover / Transmission Closure Plate / Axle Cap |
| Material | Ductile cast iron (GGG40 / EN‑GJS‑400‑15) or high‑strength aluminum alloy |
| Outside Diameter | 180 mm ±0.5 mm (flange outer edge) |
| Thickness (Overall) | 22 mm ±0.2 mm |
| Bolt Hole Pattern | 8 holes, Ø10.5 mm, PCD 150 mm |
| Gasket Surface Finish | Ground to Ra ≤ 1.6 µm (no gasket needed with sealant) |
| Integrated Seal Bore | 70 mm diameter for shaft lip seal (optional) |
| Tensile Strength (Cast Iron) | ≥ 400 MPa (58,000 psi) |
| Hardness (Brinell) | 160‑220 HB |
| Corrosion Protection | Zinc‑rich primer + polyester powder coat (240h salt spray) |
| Operating Temperature Range | -40°C to +150°C (continuous) |
| Max Internal Pressure | 0.5 MPa (5 bar) with rubber gasket |
| Threaded Ports (Accessories) | 1x M20×1.5 breather port, 1x M14×1.5 magnetic drain plug port |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Superseded Part Numbers | 273100488, 273100512, 273100600 |
The 273100575 end cover seals the end of the transmission case, preventing oil leakage and blocking dust, water, and debris from entering the gearbox. It also provides a mounting surface for breather valves and magnetic drain plugs.
In axle applications, the end cover retains the wheel bearing preload and includes an integral lip seal bore. A cracked cover allows the shaft seal to shift, causing rapid oil loss and bearing contamination.
The cover also acts as a structural member, stiffening the housing and reducing gear misalignment under load. Replacing a damaged cover with genuine 273100575 restores housing rigidity and prevents internal component distress.
Each 273100575 end cover is cast using resin‑sand molding, ensuring consistent density and minimal porosity. The casting is then heat‑treated to relieve internal stresses before machining.
CNC machining centers drill and ream all bolt holes, create the gasket surface with a fly cutter, and bore the seal pocket to H8 tolerance. The finished gasket surface is ground to 1.6 Ra, permitting leak‑free sealing with liquid gasket or a paper gasket.
XCMG inspects every cover for cracks using fluorescent penetrant and checks flatness with a dial gauge. Each part receives a protective powder coat that withstands salt spray and UV exposure.
To replace a leaking or damaged end cover, drain the oil and remove any hoses or breather lines attached. Unbolt the cover using a socket wrench and remove the old gasket or sealant.
Clean the mating surface on the housing using a scraper and solvent. Apply a continuous bead of anaerobic gasket maker or fit a new paper gasket. Position the new 273100575 cover and torque the bolts in a cross pattern to 45 Nm (cast iron) or 25 Nm (aluminum).
If the cover includes a shaft seal, press the new seal into the bore using a seal driver. Lubricate the seal lip with oil before sliding the shaft into place. Refill the housing with specified gear oil and check for leaks during a test run.
Visible oil drips from the cover bolted joint or from its center, cracking around bolt holes due to overtightening, warping causing uneven gasket compression, and rust perforation on painted surfaces.
If the cover is distorted, the bearing preload may be affected, leading to axle end‑play. Replace immediately with genuine 273100575 to avoid seal failure and bearing damage.
Inspect the end cover for leaks during every oil change (500 hours). Look for cracks or paint blistering. Retorque bolts after the first 100 hours of operation following a rebuild.
Replace the cover at the first sign of corrosion penetration or if the gasket surface is pitted. XCMG recommends replacing end covers every 8,000‑10,000 hours or during a full transmission overhaul.
Always use new sealing material – reusing old gaskets or sealant leads to leaks. Keep a spare 273100575 cover in stock for emergency repairs to minimize downtime.
Genuine XCMG 273100575 end covers are backed by a 12‑month warranty. Regional warehouses in Houston, Rotterdam, Dubai, and Shanghai maintain deep stock of this critical component.
Standard air freight delivers within 3‑7 business days worldwide. Emergency 24‑48 hour shipping available for urgent breakdowns. Bulk orders receive discounted pricing and sea freight.
Aftermarket covers often use inferior gray iron that cracks easily, have poorly machined bolt holes, and lack corrosion protection. Genuine XCMG 273100575 ensures perfect fit, structural integrity, and long service life. Order genuine today to keep your grader’s drivetrain sealed and safe.
Don’t ignore a weeping end cover – a small leak quickly escalates into major oil loss and contamination. The 273100575 cover is an affordable insurance policy for expensive transmissions and axles. Keep a spare in your parts inventory and replace proactively.
Upgrade your motor grader’s reliability with XCMG genuine cast iron end covers. Precision machined, powder coated, and 100% inspected – order the 273100575 End Cover now and maintain oil‑tight integrity for thousands of operating hours in the harshest grading environments.
