Eaton Cycloid Hydraulic Motor 6K-245 6K-390

Eaton 6K-245 is a cycloid hydraulic motor with a displacement of 245 mL/r, belonging to the mid size product of Eaton 6K series. It is also commonly known as a disc distribution hydraulic motor, which operates in a face distribution manner. Its core advantage lies in the use of tapered roller bearing support design. This design allows it to withstand large radial and axial external loads, and in many applications, it can directly drive the working mechanism without the need for additional external bearings, thereby simplifying the equipment structure.

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Main technical parameters
Typical values/specification notes/supplementary explanations for parameter projects
The displacement of 245 mL/r is the core parameter of the motor, which determines its output capability.
Continuous pressure rating: 20.5 MPa
Discontinuity: 31 MPa. Please note that the nominal pressure mentioned in the product documentation is mostly 25 MPa. It should not be used at both maximum speed and maximum pressure simultaneously.
Continuous speed range: 615 r/min
Intermittent: 834 r/min The actual speed is also limited by the input flow rate.
Continuous torque: 735 N · m
Intermittent: 1100 N · m This is the theoretical value, and the actual output torque may vary slightly due to mechanical efficiency.
Recommended allowable back pressure:<5 MPa
Maximum: up to 7 MPa. When the back pressure is too high, it is necessary to connect the leakage oil pipe to ensure the service life and performance of the motor.
Working fluid anti-wear hydraulic oil, viscosity 37-73 cSt, maintaining oil cleanliness ISO 18/13, recommended maximum working oil temperature not exceeding 80 ℃.
Common part numbers in ordering information, such as 612-1032, 612-0082, 112-1065, etc., have different suffixes representing different installation forms such as flanges, output shafts, or oil ports. 612-1032 is a very versatile model.

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