Chapter 4 Hydraulic Actuators Structure features The vanes in a vane motor are positioned radially with a zero vane angle(0-0). A shuttle valve is set at the path between high/low pressure oil chambers and the vane bottomto ensure high pressure oil at the vane bottom.To ensure a normal startup,a spring with preload is mounted at the vane bottom to prevent the connection ofhigh and low pressure chambers when high pressure oil enters into the vane motor.Vane type motors are small in size and thus the moment of inertia, making a short reaction time and applicable to frequent direction-changing occasions. However vane type motors find more applications in small torque,high speed. low mechanical performance request occasions due to its large leakage and inadequate stabilization at low speed. 11 Homepage List Upwards Downwards Return ExitChapter 4 Hydraulic Actuators 11 Structure features The vanes in a vane motor are positioned radially with a zero vane angle (θ=0). A shuttle valve is set at the path between high/low pressure oil chambers and the vane bottom to ensure high pressure oil at the vane bottom. To ensure a normal startup, a spring with preload is mounted at the vane bottom to prevent the connection of high and low pressure chambers when high pressure oil enters into the vane motor. Vane type motors are small in size and thus the moment of inertia, making a short reaction time and applicable to frequent direction-changing occasions. However vane type motors find more applications in small torque, high speed, low mechanical performance request occasions due to its large leakage and inadequate stabilization at low speed