AHHAC                        25050                        Hydraulics- Actuators

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Performance Objectives:
  Pass Fail
Topic 1: Cylinders
     
1.1 Describe the basic components and operation of the following types of single-acting cylinders: single-acting load return cylinder, single-acting spring-return cylinder, telescoping cylinder. ____   ____
     
1.2 Describe the basic components and operation of a double- acting cylinder. ____   ____
     
1.3 Describe the basic components and operation of a double-rod cylinder. ____   ____
     
1.4 Describe the basic functions of piston rings, rod seals, rod wipers, and cylinder cushions. ____   ____
     
1.5 Describe how fixed cylinder mountings and pivoting cylinder mountings can be used to mount linear actuators. ____   ____
     
     
Topic 2: Motors    
     
2.1 Describe the basic components and operation of a vane motor and explain what a balanced vane motor is. ____   ____
     
2.2 Describe the basic components and operation of the following types of gear motors: external gear motor, internal gear motor, gerotor motor. ____   ____
     
2.3 Describe the basic components and operation of the following types of piston motors: in-line piston motor, variable displacement in-line piston motor, bent-axis piston motor. ____   ____
     
2.4 Describe the basic components and operation of the following types of partial rotation actuators: vane type rotary actuator, crank-type piston actuator, rack-type piston actuator. ____   ____


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