Hydraulic Motors and Cylinders of Injection Molding Machine
– By Zafar Kamal
Hydraulic motors are used to convert hydraulic energy (pressure and flow) to mechanical energy. Their operation is reverse of a pump’s. When oil is pushed into one port and discharge from another , the motor rotates in one direction. If the flow is reversed, the direction of the rotation is reversed. Since no centrifugal force exists until the motor begins to rotate, springs are used behind the vanes to hold them in place against the ring.
Unlike motors, cylinders are linear actuators which convert hydraulic energy into mechanical energy. Oil forced in the one end of the cylinder causes the piston and rod to move in one direction. If the flow of oil is reversed the movement is reversed.
