The YMSG27P-23E-1 slewing motor assembly consists of an axial piston motor and a planetary gear reducer. The planetary gear reducer employs a two-stage reduction mechanism, delivering high output torque, low rotational speed, and bidirectional rotation capability. During motor operation, the motor drives the sun gear mounted on the reducer’s input shaft, thereby driving the planet gears to achieve speed reduction. As the reducer’s crankshaft rotates, the planet gears simultaneously mesh with both the sun gear and the internal ring gear mounted on the reducer housing—thus enabling concurrent rotation (spinning) and revolution (orbiting) of the planet gears. Finally, the drive gear mounted on the reducer’s output shaft drives the turntable to rotate.
MODEL INSTRUCTION
| Y | MSG | 27 | P | 23E |
| Tai Zhong Yu Ye | Swivel Motor Assembly | Hydraulic motor displacement（mL/r） | With parking mechanical brake | With parking mechanical brake |
| 27 | 22.74 |
TECHNICAL FEATURE
01. Integrated with a gearbox, offering a wide range of gear ratios, compact structure, high reliability, excellent safety protection features, and a long service life.
02. Equipped with a cushioning braking function for enhanced driving comfort.
03. Fitted with an oil replenishment valve and an overflow valve to ensure motor durability.
04. The motor is a swashplate-type piston motor, delivering high operational efficiency.
SPECIFICATIONS
| Displacement | 27mL/r |
| Rated Pressure | 16.7MPa |
| Maximum Operating Pressure | 20.6MPa |
| Maximum Output Rotational Speed | 70rpm |
| Maximum Output Torque | 2040N·m |
| Reduction Ratio | 22.74 |
APPLICATION AREA
Primarily used in open hydraulic circuits of construction machinery, and compatible with the slewing assembly of 6-ton mini excavators. Due to market demand, it is also widely applied across various engineering machinery sectors, including construction and mobile machinery, mining machinery, and marine machinery.
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