Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components

linear actuators (or hydraulic cylinders)

What are Linear Actuators?, Types,

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A linear actuator or hydraulic cylinder is a fluid motor that generates linear motion. In other words, hydraulic cylinder is a device which converts fluid power into linear mechanical force and motion.

LINEAR ACTUATORS

LINEAR ACTUATORS (OR HYDRAULIC CYLINDERS)

1. What are Linear Actuators?

• A linear actuator or hydraulic cylinder is a fluid motor that generates linear motion. In other words, hydraulic cylinder is a device which converts fluid power into linear mechanical force and motion.

• The hydraulic cylinders are basically used for performing work such as pushing, pulling, tilting, and pressing in a variety of engineering applications such as in material handling equipment, machine tools, construction equipment, and automobiles.

2. Types of Hydraulic Cylinders

The linear hydraulic cylinders can be classified into many types based on various criteria. Some of them are given below:

1. Based on the cylinder action:

(a) Single-acting cylinders, and

(b) Double-acting cylinders.

2. Based on the cylinders' design:

(a) Plunger or ram cylinders,

(b) Telescoping cylinders,

(d) Cable cylinders,

(e) Diaphragm cylinders,

(f) Bellow cylinders,

(g) Duplex cylinders, etc.

3. Based on the cushioning feature:

(a) Cushioned type hydraulic cylinders, and

(b) Non-cushioned type cylinders.

4. Based on the piston or plunger used :

(a) Piston type cylinders, and

(b) Plunger type cylinders.

5. Based on the cylinders' movement:

(a) Rotating type cylinders, and

(b) Non-rotating type cylinders.

However, we shall present only few important basic hydraulic cylinders in the following sections.

Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components : Tag: : What are Linear Actuators?, Types, - linear actuators (or hydraulic cylinders)

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ME3492 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation