2. Classification
• Linear actuators: (40/28-500)
Converts hydraulic energy into straight line
motion. “Linear motors”
• Rotary actuators:
Converts hydraulic energy into rotational motion
Limited rotary & hydraulic motors
15. Design Consideration for hydraulic cylinders
1)Thrust Required on operating cylinder:
Maximum force, decide operating pressure, calculate area
of piston.
2) Speed and stroke length
3) Type of construction:
Machine tool cylinder, Construction machinery,
Steel mill and heavy industrial equipments, Aviation
equipments
16. Design Consideration for hydraulic
cylinders
4) Type of mountings
5) Service life
6) Operating Environment
7) Lateral loads and buckling failure.
17. Rotary Actuators
• Vane type limited rotary actuator
• Dual piston type actuator
• Gear Motor
• Vane Motor
• Piston Type motor
Hydraulic Motors are equivalent of electric
motors. Hydraulic motors convert pressure
energy into continuous rotation.
22. Hydraulic Motors
• Advantages:
1) Compact in size
2) High power to weight ratio. (Smaller in size)
3) Wide range of speed
4) Frequent starting, stopping, reversing and sudden
stopping is possible.
5) It can provide variable torque by using PCV.
6) Hydraulic motors are explosion proof in nature.