An Electric Cylinder Actuator is basically a Worm Gear Screw Jack with Travelling Nut, but with lifting cylinder design. Available in ball screw and machine screw. Electric cylinders offer precise positioning, uniform lifting speeds and load capacity from 2.5 tons to 20 tons. The screw is fully enclosed by push rod which is guided in external protection tube, that is well suited for industrial environments where protection of the lifting screw mechanism and dependable operation are critical. As a better choice over hydraulic actuators or pneumatic cylinders with this clean alternative, impler to install, control, low maintenance and a quieter solution. In the absence of vibration load, Acme screw drive electric cylinder has self locking and precisely position loads, will hold loads without backdriving. Available in Direct Motor Mounts and Parallel Motor Mounts with additional gearboxes. Standard model electric cylinder actuators are purchased without a ac or dc motor or external gear reducer. NOTE: Brake motors must be specified for all ballscrews electric cylinder. Can be operated by manually operated or by electrically driven. Single unit use, or multiple electric cylinders systems including gear motors, bevel gearboxes, connecting shafts and couplings.