Power Jacks offers two lines of linear actuators—Rolaram® and EMA.
Rolaram® is an electro-mechanical linear actuator, which consists of either a Spiracon™ planetary roller screw or a ball screw, driven by an electric motor, through a reduction gearbox. The lead screw converts rotary motion to linear movement. As the screw rotates, the nut extends and retracts the ram, which is attached to the load.
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. 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 8 standard Rolaram linear actuator models, available in 2 standard drive configurations.
Load capabilities range from 4kN to 400kN. Where accuracy is less important, the R050, R075, R100 and R125 models are available in a ball screw version giving a more cost effective solution. Custom designs are available.
Consisting of 3 standard linear actuator configurations all in right-angle drive configurations.
Standard drive units are 240v/415v AC or 24v DC motors either fitted with or without a brake. There are a range of end fittings and options for trunnion mounts and limit switches. The dynamic capacity range is up to 10kN and custom designs are available.