The BM series motor is a kind of axial distribution cycloid hydraulic motor with higher load capacity, and can be used for long-term operation under high pressure. The overall structure design of the output shaft and distribution mechanism, the toothed fixed rotor, the rolling shaft support at both ends, and the inlet rotary sealing ring are adopted, so that the motor can work under high back pressure. 1. The distribution mechanism and the output shaft are integrally formed, with higher oil distribution accuracy and volume. 2. Shaft seal design, high back pressure bearing capacity. 3. The toothed fixed rotor and the spline parameter design make the machine have a long service life. 4. Double rolling bearing design at both ends, with greater lateral carrying capacity, suitable for a variety of situations. 5. Mainly used in construction machinery such as petroleum, coal machinery and small cranes.