Bmr series motor adapt the advanced gerolor gear set design with shaft distribution flow, which can automatically compensate in operating with high pressure , provide reliable and smooth operation, high efficiency and long life. Characteristic features: *advanced manufacturing devices for the gerolor gear set, which use low pressure of start-up, provide smooth, reliable operation and high efficiency. *shaft seal can bear high pressure of back and the motor can be used in parallel or in series. *special design in the driver-linker and prolong operating life *special design for distribution system can meet the requirement of low noise of unit. *compact volume and easy installation.