Worm Gear electric ball screw jack, anti-Rotation and higher pitches available
Translating(traveling screw) and rotating (traveling nut) configurations
Move loads and apply force more efficiently than additional machine screw actuators
No self-locking! Because of the lack of friction, a holding brake is necessary: a engine brake or a springtime pressure brake is necessary.
These worm equipment screw jacks are extremely precision and reliability, it could meet all of the necessary security, cost-efficiency, and toughness mandates of your application. High strength bronze worm gear is used, the payloads from 0.5T to 100T . A complete of 11 sizes are available, each in a vacationing nut version and a simple version.
The screw jacks can be used separately or in organizations linked with drive shafts, joints, couplings, bevel gearboxes and additional mechanical components. In addition they can be driven by different motors: electric, with either AC engine or DC motor in addition to hydraulic or pneumatic motors. All these motion control items can be built-in many type jacking system arrangements or configurations.
Ball screw jacks are common where higher 
speeds and duty cycles are needed. Most screw jacks make use of trapezoidal screws Tr, because they’re basic, robust and inexpensive. The proportion of screw jacks that use ball screws is however constantly increasing. The reasons for this are primarily their pitch accuracy, their high efficiency (less power consumption and much less heat generation) and the bigger pitches available, which worm screw jack permit higher stroke speeds.
A screw jack can truly add a machine cut lifting nut. Because of this model screw jack, just the bronze nut move along with the screw shaft. The lifting screw will not slide. It can be like the linear actuator working basic principle which converts rotational movement into linear motion. Out of this point to understand, a power linear actuator is usually a motorized screw jack.
The screw thread of screw jack could be acme screw and ball screw. So there are few variations of the screw jack. Commonly, machine screw jack and ball screw jack can be found in your engineer project. Weighed against acme screw, the ball screw is certainly better as there are ball bearings between your nut and screw. The anti-friction ball bearing can raise the ball screw efficiency.