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289373 XCMG GR2605 motor grader sun gear shim
- Model: 289373
- Type: Sun Gear Thrust Shim/Adjustment Shim
- Material: 65Mn/50CrV alloy spring steel, quenched and tempered
- Surface Treatment: Blackening/phosphating for rust prevention, flatness ≤0.02mm
- Hardness: HRC45-50, high wear and fatigue resistance
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Product Details:
289373 XCMG GR2605 motor grader sun gear shim
289373 is a dedicated sun gear thrust/adjustment shim for planetary transmission systems of construction machinery, precision-stamped from high-hardness wear-resistant alloy steel plate. It compensates axial clearance, positions and thrusts between sun gear, planetary carrier and bearings, ensuring meshing accuracy of planetary gear trains, suitable for heavy load, impact and high-speed rotation conditions.
Technical Parameters
- Model: 289373
- Type: Sun Gear Thrust Shim/Adjustment Shim
- Material: 65Mn/50CrV alloy spring steel, quenched and tempered
- Surface Treatment: Blackening/phosphating for rust prevention, flatness ≤0.02mm
- Hardness: HRC45-50, high wear and fatigue resistance
- Thickness: 0.5mm/1.0mm/1.5mm/2.0mm (standard series)
- Structure: Annular thin sheet, central hole precisely fits sun gear journal, outer edge positioning
- Operating Temperature: -40℃～120℃
- Functions: Axial clearance adjustment, thrust support, wear compensation, anti-movement positioning
Application Scenarios
Suitable for planetary transmission mechanisms such as wheel reducers, planetary gearboxes, drive axles, swing motors and travel motors of construction machinery including loaders, excavators, graders, forklifts and rollers. Installed between sun gear end face and planetary carrier/bearing to control axial movement, compensate assembly and wear clearance, and ensure smooth meshing of planetary gear trains.
Common Faults & Troubleshooting
- Excessive clearance/movement: Caused by shim wear or insufficient thickness. Replace 289373 and reselect thickness.
- Crushing deformation: Caused by overload or uneven installation stress. Replace with new shim and inspect bearings and sun gear end face.
- Abnormal wear: Caused by poor lubrication or foreign matter. Clean and replace shim, repair lubrication system.
- Abnormal noise/impact: Caused by improper clearance or shim loss. Reassemble and fasten, check positioning structure.
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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!
