Place of Origin:
China
Brand Name:
Kobelco
Model Number:
SK200-8
Excavator Hydraulic Motor 1st & 2nd Stage for SK200-8 Swing Reduction Gearbox
Restore smooth and powerful swing operation to your Kobelco excavator with this premium 1st and 2nd stage swing carrier assembly, engineered as a direct OEM replacement for the Kobelco SK200-8 swing reduction gearbox. As the core load-bearing component of the swing drive system, this assembly transmits torque from the swing motor to the excavator superstructure, enabling precise 360° rotation. Manufactured to exact factory specifications, it resolves common swing system issues including weak rotation, abnormal noise, and gear slippage. Each assembly comes fully pre-assembled with all planetary gears and bearings, eliminating the need for separate component sourcing and reducing installation time by up to 60%.
| Parameter | Specification |
|---|---|
| Product Name | Swing Gearbox Stage 1 & Stage 2 Planetary Carrier Assembly |
| Compatible Excavator | SK200-8 (also fits SK210-8, SK200-6E) |
| Reduction Stage | Stage 1 (First Stage) + Stage 2 (Second Stage) Planetary Gear Set |
| Gear Type | Planetary Gear (Sun Gear, Planet Gears, Ring Gear, Carrier) |
| Gear Material | High-strength alloy steel (20CrMnTi or equivalent) |
| Heat Treatment | Carburizing and quenching for high surface hardness (HRC 58-62) |
| Number of Planet Gears | Stage 1: 3 planet gears / Stage 2: 3 planet gears |
| Spline Profile | Inner spline matches swing motor output shaft (standard SK200-8 spec) |
| Bearing Type | High-precision tapered roller bearings (compatible with OEM) |
| Application | Swing reduction gearbox assembly, reduces motor speed to provide high torque for excavator upper structure rotation |
| Condition | New aftermarket replacement, 100% interchangeable with OEM parts |
| Key Features | High torque capacity, low backlash, wear-resistant, direct bolt-on fit, no modification needed |
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