subject: Hydraulic orbital motor - Linear and Rotary [print this page] Hydraulic orbital motor showcase the versatility of the entire drive system. The same working fluid can be used to generate force in a line or as a rotation in either high or low RPMs, and with enough force or torque to move heavy equipment. The wide variety of uses is complemented by the many different motor types, allowing a design engineer to tailor fit a system to a particular job.