Hyundai R130 Swing Motor Gearbox Excavator Hydraulic Final Drive
Price:
Negotiable
MOQ:
1 Pc
Delivery Time:
7-35days
Product Description
Hyundai R130 Excavator Swing Reduction Gearbox Final Drive Gearbox Parts Swing Motor Gearbox
The swing reducer (colloquially swing gearbox) of an excavator acts as a core transmission connector between the slewing motor and the large slewing gear ring. Its essential function lies in decelerating rotation and amplifying torque, realizing seamless 360‑degree rotation of the upper structural assembly.
Fundamental Component Structure
Sun Gear: Matched to slewing motor spline teeth, it inputs high‑speed rotational power source.
Planet Gears: 3‑4 individual gears per stage, revolving around the sun gear with self‑rotation to transfer torque energy.
Ring Gear: Fixed securely to the housing and meshes with the planet gear assembly group.
Planet Carrier: Transmits output driving power to operate the lower small drive pinion gear.
Brake: Internal wet‑style multi‑disc brake assembly, spring‑engaged locking and hydraulically‑released disengagement, preventing reverse rotation of the slewing mechanism.
Housing & Bearings: High‑strength cast or forged steel casing housing, supported by heavy‑load‑rated bearings, dust‑proof and leak‑resistant in service performance.
Planet Gears: 3‑4 individual gears per stage, revolving around the sun gear with self‑rotation to transfer torque energy.
Ring Gear: Fixed securely to the housing and meshes with the planet gear assembly group.
Planet Carrier: Transmits output driving power to operate the lower small drive pinion gear.
Brake: Internal wet‑style multi‑disc brake assembly, spring‑engaged locking and hydraulically‑released disengagement, preventing reverse rotation of the slewing mechanism.
Housing & Bearings: High‑strength cast or forged steel casing housing, supported by heavy‑load‑rated bearings, dust‑proof and leak‑resistant in service performance.
Low‑torque high‑speed power from the hydraulic motor is transmitted via the sun gear, primary planetary gear set and secondary planetary gear set to the output planet carrier. The pinion gear operates at low rotational speed with high torque output, meshing with the inner gear ring of the slewing bearing to drive upper‑structure slewing motion.
Common Operational Defects & Root Cause Analysis Results
- Abnormal noise generation / Jerking movement performance: Gear wear abrasion and surface pitting corrosion defects, bearing functional breakdown failure damage, insufficient or contaminated polluted lubricating fluid medium, inappropriate gear meshing backlash numerical value.
- Oil seepage and leakage occurrence problems: Worn oil sealing ring components, housing structural crack defects, overfilled lubricant liquid level height, clogged breather ventilation air‑hole opening.
- Sluggish slow‑moving or power‑deficient slewing performance: Worn gear and bearing assembly components, incomplete brake release functional action, hydraulic motor internal bypass leakage flow path, mismatched speed‑reduction transmission gear ratio parameter.
- Excessive thermal overheating rise conditions: Deficient oil level volume or degraded lubricant physical‑chemical characteristics, overload operating working conditions, persistent brake drag friction resistance force, inadequate heat dissipation radiation capability performance.
- Gear slipping skipping / Tooth fracture failure incidents: Sudden impact load force pressures, foreign debris particle entry into internal component parts, fatigue‑induced degradation wear damage issues, shaft misalignment deviation errors during assembly installation processes.
| Machinery Test Report | Provided | Warranty | 1 Year |
| Video outgoing-inspection | Provided | Brand Name | OEM |
| Place of Origin | China | Part Name | Swing Reduction Assembly |
| Model | R130 | Keyword | Swing Gearbox |
| MOQ | 1 Piece | Quality | Tested Great Performance |
| Application | Excavator | Delivery Time | 7-35 Days |
| Service | Professsional Service | Condition | Brand New |
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Company
Lanzhou Fudong Guangqi Trading Co., Ltd
Location
No. 7 West South Binhe Road, Xigu District, Lanzhou City, Gansu Province, China
Contact Person
Liang