VOLVO 7117-30330 Planetary Sun Gear | Final Drive Transmission GearGenuine VOLVO Planetary Sun Gear 7117-30330
Channel High-Torque Power, Withstand Extreme Torsional Load. Worn gear causes abnormal noise and power loss. This alloy forged sun gear delivers stable torque transmission, resists tooth damage and protects whole final drive assembly.
Core Advantages
| Advantage Item | Description |
|---|
| Cr-Mo Alloy Forged Material | Dense internal structure, strong toughness to absorb violent impact torque |
| Deep Hardened Gear Teeth | Anti-pitting and anti-spalling, durable under long meshing friction |
| Precision Ground Involute Profile | Smooth meshing, low backlash and reduce transmission vibration noise |
| Tight Integrated Spline Hub | No slipping on drive shaft, effectively avoid spline wear and failure |
Technical Parameters
| Parameter | Specification |
|---|
| Part Number | 7117-30330 / VOE7117-30330 |
| Product Type | Travel final drive planetary reduction sun gear |
| Raw Material | Chromium-molybdenum alloy steel with carburizing heat treatment |
| Processing Craft | Forging, quenching, CNC precise tooth grinding |
| Application | Medium excavator walking gearbox core driving gear |
Compatible Machine Models
| Equipment Type | Applicable Models |
|---|
| Crawler Excavator | EC140C,EC160D,EC210B,EC210D,EC220E |
| Forestry Machinery | FC2121C |
Procurement Suggestion
| Replacement Notice | Matching Combination Parts |
|---|
| Replace gear timely when abnormal sound appears, prevent broken teeth damaging internal gearbox parts. | Travel gear seal, thrust washer, retaining ring, planetary gear, gear oil |
Common Failure Symptoms
| No. | Failure Phenomenon |
|---|
| 1 | Metal debris and fine iron powder exist in gear oil, teeth surface severely worn |
| 2 | Grinding and clicking noise during walking, unstable driving power output |
| 3 | Gearbox overheats easily, increased friction from deformed meshing teeth |
All models for compatibility reference only. Premium sun gear ensures efficient power transmission, prolongs gearbox service life and guarantees stable walking performance of excavator.
