800361421 XCMG GR2605 motor grader drive axle main reducer assembly

800361421 XCMG GR2605 motor grader drive axle main reducer assembly

The 800361421 drive axle main reducer assembly is a core power transmission component of the construction machinery drive system. Integrating the driving bevel gear, driven bevel gear, and housing, it reduces speed, increases torque, and transmits drive power to the wheels. Suitable for heavy-duty, high-frequency operating conditions, it offers smooth operation, wear resistance, and impact resistance, making it a crucial core component for equipment power transmission.

Core Technical Parameters

1. Model: 800361421, a dedicated drive axle main reducer assembly for construction machinery, precisely matched to the host drive axle interface.

2. Compatible Medium: Construction machinery-specific gear oil, used for internal gear lubrication, cooling, and wear prevention.

3. Material: Housing (Q355B carbon steel), gears (20CrMnTi alloy steel), carburized and quenched for high strength, high wear resistance, and impact resistance.

4. Operating Temperature: -40℃~120℃, suitable for harsh outdoor operating environments such as high and low temperatures, dust, and oil contamination.

5. Surface Treatment: The housing is powder-coated for rust prevention; gears undergo phosphate coating and quenching treatment, providing rust and corrosion resistance and enhancing wear resistance.

6. Transmission Ratio: Adapts to the power requirements of the main unit, precisely transmitting torque, reducing speed, and increasing driving force.

7. Load Capacity: Can withstand high torque impacts under heavy-load conditions, stably transmitting power without deformation or damage.

8. Fitting Precision: Reasonable gear meshing clearance, tight assembly of all components, smooth operation, no jamming, and no abnormal noise.

Core Functions and Roles

As a core component of the drive system, it receives power from the engine, achieving speed reduction and torque increase through gear meshing, providing sufficient driving force to the wheels; stably transmitting power, ensuring lossless power transmission, and guaranteeing the power requirements of the equipment under heavy loads; possessing excellent wear resistance and impact resistance, withstanding high torque impacts, protecting the drive axle and other transmission components; integrating a sealing structure to prevent gear oil leakage, isolate dust and impurities from entering, and extend the service life of internal components; maintaining equipment driving stability, adapting to complex road conditions, and improving work efficiency.

Suitable Applications

Widely used in the drive axle systems of various construction machinery such as excavators, loaders, bulldozers, and road rollers, it is suitable for heavy-duty, high-frequency operation scenarios such as infrastructure construction, mining, earthwork engineering, and road construction. It is an indispensable core assembly component for equipment power transmission, directly determining the equipment’s power performance and operational stability.

Common Faults and Troubleshooting

For severe abnormal noise, check for gear wear, abnormal meshing clearance, or insufficient gear oil. Add special gear oil, adjust the meshing clearance, and replace gears if wear is severe. For gear oil leakage, check for aging seals and damaged housings. Replace seals and repair damaged parts of the housing. For insufficient power transmission, check for gear wear and damaged bearings. Replace worn parts to ensure normal power transmission. For overheating of the housing, check for insufficient gear oil, deteriorated oil quality, or abnormal gear meshing. Replace gear oil and adjust the meshing clearance.

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1 800361422 Wheel assembly – Front left wheel
2 275400253 Balance box assembly
3 800361418 Wheel assembly – Front right wheel
4 800361419 Wheel assembly – Rear right wheel
5 800361421 Drive axle final drive reduction gear assembly
6 800361903 Wheel assembly – Rear left wheel

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