This is the twelfth lesson in the Industrial Hydraulic Power Course. This lesson describes the various cylinders used in hydraulic actuators. It also describes the operation of a cylinder controlled by regulating flow or pressure, and the purpose of a cylinder leak test.

Module Objectives

• Describe the difference between a single-acting cylinder and a double-acting cylinder.
• Identify the schematic symbol and describe the action of a differential cylinder.
• Describe the operation of a circuit whose cylinder is controlled by regulating flow or pressure.
• Identify the components of a hydraulic cylinder using a cutaway model.
• Explain the purpose of a cylinder leak test.