New EMA Linear Actuators Product Guide

EMA is an abbreviation for Electro Mechanical Actuator, which consists of either a trapezoidal or ball lead screw, driven by an electric motor through spiroid gearing

by ZaoZao Li | Friday 16 March 2012

Power Jacks Electro Mechanical Actuator
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 duty model (I), incorporating a trapezoidal screw
• Medium duty model (C), incorporating a ball screw
• High speed & medium duty model (H), incorporatinga ball screw

Where the standard range does not meet the application specification, special actuators can be designed to meet customers’ specific requirements.

Our EMA industrial linear actuator is designed for low to medium duty applications, with loads up to 10kN. It uses a precision spiroid gear set that delivers superior performance when compared to a similar size worm gear set.

Depending on the performance required, the gear set drives either a machine screw or ball screw to move the ram. And a wide range of options, including clutches and limit switches, are available to suit most applications.

The brand new EMA linear actuator product guide is released on our website (contact details below)


Bruce Hamper
Power Jacks Ltd
+44 (0) 1358 285100

Friday 16 March 2012 / file under Technology | Engineering | Automotive | Aerospace