The genuine XCMG 380604127 Compressor Belt is a high‑performance poly‑V drive belt designed for the air conditioning compressor on motor graders.
This OEM 380604127 belt features a multi‑ribbed (6PK) profile that transfers rotational power from the engine crankshaft to the A/C compressor clutch.
Manufactured from high‑strength EPDM rubber with aramid cord reinforcement, it resists heat, oil, wear, and stretching under high‑load conditions.
Engineered for XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders, this belt is a direct replacement for original equipment with identical length and rib count.
A worn or cracked compressor belt causes loud squealing, poor A/C performance, and eventual belt failure, leaving the cab without cooling. Replacing a damaged belt with genuine XCMG 380604127 restores proper drive ratio and quiet operation.
This belt is also used in some alternator or water pump auxiliary drives. XCMG 380604127 guarantees correct length (1720 mm), rib profile, and tension retention for thousands of hours.
| Parameter | Specification |
|---|---|
| OEM Number | 380604127 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Poly‑V Belt / A/C Compressor Drive Belt |
| Profile (Rib Configuration) | 6PK (6 ribs × 3.56 mm pitch) |
| Effective Length (Li) | 1720 mm ±5 mm |
| Top Width (Nominal) | 21.36 mm |
| Belt Height (Nominal) | 5.0 mm |
| Material | EPDM rubber with aramid fiber tensile cord |
| Cord Material | High‑modulus aramid (Kevlar equivalent) |
| Temperature Range | -40°C to +130°C (continuous) |
| Tensile Strength (min) | 8.5 kN per belt |
| Recommended Tension | 300‑350 N (installed, warm engine) |
| Standards | SAE J1459, ISO 9981 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 |
| Superseded Part Numbers | 380604112, 380604118, 380604122 |
The 380604127 compressor belt is the only power transmission link between the engine and the A/C compressor. Without it, the compressor cannot rotate, and no cooling is produced.
A slipping belt causes clutch chatter, reduced cooling output, and rapid belt wear due to heat buildup. A broken belt disables the entire air conditioning system and may damage other components.
Replacing a glazed or cracked belt with genuine XCMG 380604127 restores positive clamping force, prevents belt squeal, and ensures that the compressor clutch engages at full torque without slip.
The multi‑rib design provides high surface contact area for efficient power transfer, even under heavy electrical loads and high ambient temperatures.
Each 380604127 belt is molded from premium EPDM rubber, which withstands ozone, UV radiation, and under‑hood oil contamination better than standard neoprene.
The tensile cord is made of continuous‑filament aramid (Kevlar‑type), providing extremely low stretch and high fatigue resistance. Even after thousands of heat cycles, the belt maintains correct tension.
The rib profile is precision‑ground to mate perfectly with the compressor pulley grooves, preventing dusting and edge cracking. XCMG tests each belt for dynamic stretch and backside wear.
A sample belt is run on a dynamometer for 500 hours under load (8 N·m torque) with zero failures. The belt also passes a 72‑hour ozone test at 50 pphm.
To replace a worn compressor belt, loosen the tensioner pulley using a 1/2″ breaker bar. Slide the old belt off the pulleys and inspect all pulleys for roughness or misalignment.
Route the new 380604127 belt around the pulleys in the correct pattern (refer to the underhood diagram). Release the tensioner slowly, ensuring the belt sits evenly in all grooves.
Check belt tension using a belt tension gauge (e.g., Gates Sonic Tension Meter). Proper tension for this belt is 300‑350 N when the engine is warm. Readjust if necessary.
Run the engine with A/C on full for 5 minutes, then re‑check tension. Retighten if the belt has stretched more than 5%. Never use a belt that has been oil‑contaminated.
Keep a spare 380604127 belt in your parts locker, as sudden breakage can leave you without defrost/defog in rainy or cold weather.
High‑pitched squeal when the A/C clutch engages, visible cracks on the ribs or back cover, glazed shiny ribs, frayed edges, and belt dust around the compressor area.
Also, if the belt tension is correct but the compressor is still slow to engage, the belt may be stretched beyond its elastic limit. Replace immediately to avoid clutch slippage.
Inspect the compressor belt every 500 operating hours or every oil change. Look for cracks, glazing, or damage. Replace the belt if any rib is missing or if the tension is below 250 N.
XCMG recommends replacing the 380604127 belt every 2,000‑3,000 operating hours or every 2 years, whichever comes first. In high‑dust or high‑temperature environments, replace annually.
When replacing the belt, also inspect the tensioner and idler pulleys for worn bearings. A faulty tensioner can cause premature belt failure. Replace tensioner if it does not move smoothly.
Keep the belt clean – oil or coolant spills will degrade the rubber. If a leak is found, repair the leak and install a new belt.
Genuine XCMG 380604127 compressor belts are backed by a 12‑month warranty. Regional warehouses: Houston (USA), Rotterdam (Netherlands), Dubai (UAE), and Shanghai (China).
Standard air freight delivers within 3‑7 business days worldwide. Express 24‑48 hour shipping available for urgent A/C repairs. Bulk orders (10+ belts) receive volume discounts.
Aftermarket belts often use polyester cord (which stretches over time) and poor‑grade rubber that hardens quickly. Genuine XCMG 380604127 uses aramid cord and EPDM for extended life.
Don’t risk compressor slippage and overheating – a broken belt can strand your grader in hot weather. Keep a genuine spare belt in your service truck for immediate field replacement.
Order the genuine XCMG 380604127 Compressor Belt today and maintain reliable A/C compressor drive, quiet operation, and operator comfort in all climates.
Upgrade your motor grader’s belt reliability with XCMG genuine poly‑V belts – aramid cord, EPDM compound, and precision ribbed for slip‑free power transmission.
