The swing motor device consists of a swing motor and a reducer gearbox. It is typically mounted on the excavator’s frame and is connected to the upper structure through a series of gears and other components. The function of the swing motor on an excavator is to provide the power and torque necessary to rotate the excavator’s upper structure, which consists of the cab, boom, and other components.
If the swing motor breaks, controlling the excavator gets hard. A good swing motor makes work faster and more precise. Its dependability affects how well the excavator works. It’s a key part to care for and replace when needed.
Tunway supplies high-quality swing motor devices, including both assembly and spare parts, covering major brands, ensuring stable rotation, high torque, and long-term reliability.
| Swing Motor Assy | Reducer Gearbox | Swing Device | Sun Gear |
| Planetary Gear | Carrier | Housing | Shaft Prop |
| Gear Ring | Pinion Gear | RV Gear | Holder |
| Rotary Group | Cylinder Block | Seal | Cover |













