Fixed Displacement: Speed of rotation is proportionate to rate of fluid flow to the motor. Amount of fluid required to turn the shaft one complete rotation is always the same.
Rotary Actuating (Oscillating): Motor usually limited to a fixed degree of rotation. In some designs the motor turns a limited number of revolutions in one direction prior to reversal.
Variable Displacement: Motor speed and torque (twisting effort) output can be changed.
The Nutron BV Motor is uniquely a fixed displacement and variable torque hydraulic motor.
