BM1 Series orbital hydraulic motors are small volume hydraulic motors with design of spool valve and Gerolor element. They have the following product features: Advanced design of spool valve and gerolor element, smaller size and compacter structure compared with other type hydraulic motors.· Credible design of shaft seal, which can bear high pressure.· Direction of shaft, rotation and speed can be controlled easily and smoothly.· tepless speed variation, mini. stable speed could be 15r/m, easy to install, low costs.· Could be used in parallel or in series connection in the hydraulic systems.· Low rotation inertia, easy to start with load, both positive and negative rotation being allowed, and no need to stop the rotation for changing the rotation direction.· High efficiency and economical, suitable for medium duty applications.· A variety of connection dims. options of flange, output shaft and oil port.