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
JMF64 Swing Motor Swing Device for R130-5 R150-7 DH150-7 DX150 XE135
505-0531 5050531 5057029 5604745 5874946 Swing Motor for CAT336 336GC 340
K1000697A K1015489C Swing Motor Device for DX180 DX190 DX210 DX225 DX235
2401-9255E Swing Motor Device JMF29 for Doosan Mini Excavator DH55 DH60 DH80
31N4-10130 31N4-10131 31N4-10140 Swing Motor Device for R130 R140-7 R140LC-7 R150
179-9775 1799775 Swing Motor Swing Device for CAT325C 325D 328D M325D
158-8985 1588985 Swing Motor Device M5X130 for CAT320C 320D 320D2 321 323
Excavator Parts 170-9893 1709893 Swing Motor Device for CAT 312C 312D 313D
393-2179 205-0469 PCL-200-18B Swing Motor Swing Device for CAT E307 308
14569651 VOE14569651 VOE14579709 Swing Motor M5X130CHB SA7118-30030 for EC460
M5X130 Swing motor VOE14552686 VOE14531870 for Volvo excavator EC210B
31Q6-10131 39Q6-11100 Swing Motor for Hyundai R210-9 R220-9 R220-9S
K1042873 170301-00022 Swing Motor JMF43 for Doosan Excavator DH80 DX80