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3121163 XCMG GR2605 motor grader planetary gear
- Model: 3121163
- Type: Planetary Gear for Planetary Transmission
- Material: High-strength alloy structural steel, integrally forged
- Heat Treatment: Carburizing & quenching + low-temperature tempering, precision ground tooth surface
- Tooth Surface Hardness: HRC58～62
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Product Details:
3121163 XCMG GR2605 motor grader planetary gear
3121163 planetary gear is a core transmission component in the planetary reduction system of construction machinery. It works with the sun gear and ring gear to transmit power and achieve speed reduction with torque increase. Made of high-strength alloy steel through precision forging, carburizing and quenching, it features high load capacity, wear and impact resistance, and stable operation, widely used in wheel reducers, drive axles, gearboxes and other heavy-duty transmission parts.
Technical Parameters
- Model: 3121163
- Type: Planetary Gear for Planetary Transmission
- Material: High-strength alloy structural steel, integrally forged
- Heat Treatment: Carburizing & quenching + low-temperature tempering, precision ground tooth surface
- Tooth Surface Hardness: HRC58～62
- Operating Temperature: -40℃～120℃
- Structure: External teeth with center bore for needle roller bearing installation
- Application: Heavy load, impact, continuous operation, high dust environment
Application Scenarios
Suitable for drive axles, wheel reducers, planetary gearboxes and swing mechanisms of construction machinery such as loaders, graders, rollers and forklifts. Works with sun gear, ring gear and planet carrier for speed reduction, torque increase and power distribution, adapting to heavy-duty, bumpy and frequent impact working conditions.
Common Faults & Troubleshooting
- Tooth wear, pitting or spalling: Caused by insufficient lubrication or long-term heavy load. Replace 3121163 planetary gear and check gear oil.
- Abnormal noise or seizure: Resulted from gear damage or needle bearing failure. Replace planetary gear and matched bearings.
- Tooth breakage: Caused by severe impact or overloading. Replace planetary gear and check for system overload causes.
- Bore wear: Increased clearance with planet shaft. Replace planetary gear directly to avoid transmission vibration.
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1 3327693 adjusting nut
2 72293 bearings
3 71860 Elastic Pin
4 70850 bolt M18 × 1.5 × 60
5 73586 bolt M10 × 1.25 × 10 BOLT
6 3475573 protective cover
7 3328363 driven helical gear
8 3289373 Sun gear gasket
9 3121153 Sun Wheel
10 3454063 Cross axis
11 3121163 planetary gears
12 3289363 planetary gear gasket
13 3310583 Sun Wheel
14 3310653 Sun gear gasket
15 3137973 driven plate
16 3310433 active film
17 3310593 piston
18 3310683 bolt M12 × 185
19 3328083 bolt
20 70020 bearings
21 3327713 Spring
22 3327703 adjusting nut
*For other spare parts procurement needs, please contact us!
