The genuine XCMG 380603711 Compressor Bracket is a heavy‑duty mounting bracket designed to securely attach the air compressor to the engine block on motor graders.
This OEM 380603711 compressor bracket is precision‑fabricated from high‑strength cast iron or fabricated steel, engineered to withstand constant vibration, belt tension, and temperature cycling.
It provides accurate alignment between the compressor pulley and the engine crankshaft pulley, ensuring proper belt tracking and long service life for both the compressor and the belt.
Engineered for XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders, this bracket is a direct replacement for cracked, warped, or broken original brackets.
A damaged compressor bracket causes misalignment, rapid belt wear, noise, and eventual compressor mounting failure. Replacing a faulty bracket with genuine XCMG 380603711 restores correct pulley alignment and prevents costly compressor damage.
This bracket is also used on other XCMG heavy equipment with the same engine series, ensuring fleet interchangeability. XCMG 380603711 guarantees precise bolt hole locations, flat mounting surfaces, and long‑term dimensional stability under all operating conditions.
| Parameter | Specification |
|---|---|
| OEM Number | 380603711 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Engine Accessory Mounting Bracket / Air Compressor Support |
| Material | High‑grade nodular cast iron (GGG50) or fabricated steel |
| Surface Finish | Powder coated (black, 80 μm) – 480h salt spray resistance |
| Mounting Interface (Engine) | M10 or M12 threaded holes, 4‑point bolting |
| Compressor Interface | 2x M8 and 2x M10 tapped holes (pitch to match OEM compressor) |
| Belt Tensioner Mount | Integrated boss for automatic or manual tensioner |
| Overall Dimensions (L x W x H) | 210 mm × 150 mm × 95 mm ±1 mm |
| Weight | 2.8 kg (6.2 lb) |
| Flatness Tolerance (Mounting Faces) | ≤ 0.10 mm |
| Hardness (Cast Iron) | 180‑220 HB |
| Operating Temperature Range | -40°C to +150°C (-40°F to +302°F) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Superseded Part Numbers | 380603700, 380603705, 380603708 |
The 380603711 compressor bracket rigidly supports the air compressor on the engine. It maintains precise alignment between the compressor pulley and the crankshaft pulley, which is essential for proper belt tracking.
Misalignment caused by a warped or cracked bracket leads to rapid belt edge wear, squealing, and eventual belt failure. Loss of belt drive stops the compressor, causing loss of air for brakes and suspension.
A broken bracket can allow the compressor to shift, damaging hoses, wiring, and the compressor itself. Replacing a damaged bracket with genuine XCMG 380603711 restores factory alignment and prevents catastrophic accessory drive failure.
This bracket also provides mounting points for the belt tensioner and idler pulley. Accurate bracket geometry ensures correct belt tension and reduces vibration harmonics.
Each 380603711 bracket is cast from high‑grade nodular iron or fabricated from thick steel plate, then stress‑relieved to prevent distortion over time. All machining is performed on CNC equipment.
The mounting faces are milled flat within 0.10 mm to ensure even load distribution on bolts. The powder coat finish (black) provides excellent resistance to oil, grease, and road salt.
All bolt holes are tapped and chamfered to prevent thread damage during installation. XCMG inspects each bracket for dimensional accuracy using a coordinate measuring machine.
Sample brackets are tested for strength by applying 3× the static compressor weight in all directions. No permanent deformation is allowed.
To replace a cracked or broken compressor bracket, first release belt tension and remove the drive belt. Disconnect air lines and electrical connections from the compressor.
Support the compressor with a jack or hoist, then remove the four mounting bolts that attach the bracket to the engine block. Remove the old bracket and transfer any spacers or shims to the new bracket.
Clean the engine mounting surface and apply thread locker to the new bolts. Torque the bracket bolts to 55 Nm in a crossing pattern. Reinstall the compressor on the bracket with new bolts torqued to 25 Nm.
Install the belt and adjust tension per the service manual. Start the engine and check for belt alignment using a straightedge across the pulleys. A misalignment of more than 1 mm indicates a problem.
Never reuse old bolts or shims that are damaged. Always use genuine XCMG 380603711 brackets to guarantee fit and durability.
Visible cracks near mounting holes or along the casting, excessive belt dust (indicating misalignment), compressor leaning or wobbling when engine runs, and belt chirp or squeal that changes with engine speed.
Also, if the bracket has been welded or straightened in the past, or if the powder coat shows signs of overheating. Replace immediately to avoid belt throw‑off and compressor damage.
Inspect the compressor bracket during every engine service (500 hours). Look for cracks, loose bolts, or belt misalignment. Retorque bracket bolts to specification if loose.
Magnaflux or dye penetrant inspection of the bracket is recommended during major engine overhauls (every 8,000‑10,000 hours). Replace the bracket if any crack is found.
When replacing the compressor, always inspect the bracket for flatness. Even a slightly bent bracket will cause premature compressor failure. Keep a spare 380603711 bracket in your parts inventory.
A failed bracket can cause the compressor to fall off, damaging belts, hoses, and the radiator. Proactive replacement is inexpensive insurance against major engine damage.
Genuine XCMG 380603711 compressor brackets are backed by a 12‑month warranty against manufacturing defects. Regional warehouses: Houston, Rotterdam, Dubai, Shanghai.
Standard air freight delivers within 3‑7 business days worldwide. Emergency 24‑48 hour shipping available for urgent repairs. Bulk orders (5+ brackets) receive volume discounts.
Aftermarket brackets often use low‑grade materials, inaccurate hole patterns, or lack proper heat treatment, leading to premature cracking. Genuine XCMG 380603711 ensures correct geometry, strength, and durability.
Don’t risk compressor misalignment and belt failure – a broken bracket can strand your grader in the field. Keep a genuine spare bracket in your service truck for rapid replacement.
Order the genuine XCMG 380603711 Compressor Bracket today and maintain reliable air compressor drive alignment for thousands of operating hours.
Upgrade your motor grader’s engine accessory mounting reliability with XCMG genuine brackets – precision cast, powder coated, and 100% inspected for flatness and strength.
