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Electric Cylinders
The terminology electric cylinder or electric ram is another way of describing the linear actuator. The terminology is based on the original are cylinder. The electric cylinder is a means of transferring a rotational movement into a linear movement.
The electric cylinder is different from a normal rotary action due to the design which translated the rotary action into a linear action, i.e. push and pull. There are a number of different types of actuators, electric linear actuators or electric cylinder incorporates a motor to provide the motive power. The main advantage of this type of unit is its ability to hold position. The units are fitted with an Acme screw which is specially designed not to back drive. A normal thread viewed in cross section is triangular in shape, reducing in thickness from the root to the tip. The acme screw when viewed in section is square.
Electric cylinders can be incorporated within a telescopic column to create a linear actuator with overhung load capability.
Electric cylinders can have either an acme screw drive or a ball screw drive. The ball screw is designed for applications with high speed and has a high efficiency. An alternative is the Acme screw which has a square thread form, this is very good for transmitting high loads, but due to the friction is not very efficient and as such is best for applications requiring a slower speed.
The electric cylinder is different from a normal rotary action due to the design which translated the rotary action into a linear action, i.e. push and pull. There are a number of different types of actuators, electric linear actuators or electric cylinder incorporates a motor to provide the motive power. The main advantage of this type of unit is its ability to hold position. The units are fitted with an Acme screw which is specially designed not to back drive. A normal thread viewed in cross section is triangular in shape, reducing in thickness from the root to the tip. The acme screw when viewed in section is square.
Electric cylinders can be incorporated within a telescopic column to create a linear actuator with overhung load capability.
Electric cylinders can have either an acme screw drive or a ball screw drive. The ball screw is designed for applications with high speed and has a high efficiency. An alternative is the Acme screw which has a square thread form, this is very good for transmitting high loads, but due to the friction is not very efficient and as such is best for applications requiring a slower speed.