Power Jacks EMA Actuators User Manual
Page 5
EMA Linear Actuator
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web: www.powerjacks.com
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2.
Description
EMA electric linear actuators are mainly used whenever precisely controlled lifting,
lowering or feeding movements are required. The actuators consist of either a
trapezoidal or ball lead screw, driven by an electric motor through spiroid gearing. The
screw converts the rotary motion into linear movement. As the screw rotates, the nut
extends and retracts the ram, which is attached to the load.
There are 3 standard EMA models, all available in a right-angle drive configuration.
Intermittent model, incorporating a trapezoidal screw.
Continuous model, incorporating a ball screw
High Speed Continuous model, incorporating a ball screw.
Where the standard range does not meet the application specification, special actuators
can be designed to meet customers’ specific requirements.
As standard, the units are available with 240V / 415VAC 3phase or 240VAC 1 phase or
24VDC motors, with or without a brake. The type of motors required is dependent on the
customer’s application. The motors are mounted to the actuator on an IEC 63C Face
Flange Mounting.