Worm Gear electrical ball screw jack, anti-Rotation and higher pitches available
Translating(traveling screw) and rotating (traveling nut) configurations
Move loads and apply force more effectively than other machine screw actuators
No self-locking! Because of having less friction, a holding brake is essential: a engine brake or a spring pressure brake is required.
These worm equipment screw jacks are very precision and reliability, it can meet all the necessary security, cost-efficiency, and strength mandates of your application. High power bronze worm gear is used, the payloads from 0.5T to 100T . A worm screw jack complete of 11 sizes are available, each in a vacationing nut version and a basic version.
The screw jacks can be used separately or in groupings connected with drive shafts, joints, couplings, bevel gearboxes and other mechanical components. They also can be powered by different motors: electric, with either AC motor or DC motor as well as hydraulic or pneumatic motors. All these motion control items could be built in many type jacking system arrangements or configurations.
Ball screw jacks are normal where higher speeds and duty cycles are needed. Most screw jacks make use of trapezoidal screws Tr, because they are basic, robust and inexpensive. The proportion of screw jacks that use ball screws is nevertheless constantly increasing. The reason why for this are mainly their pitch precision, their high efficiency (much less power consumption and much less heat era) and the bigger pitches available, which permit higher stroke speeds.
A screw jack can add a machine cut 
lifting nut. For this model screw jack, just the bronze nut move together with the screw shaft. The lifting screw does not slide. It is certainly like the linear actuator functioning principle which converts rotational movement into linear motion. Out of this stage to understand, a power linear actuator is 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 are available in your engineer task. Weighed against acme screw, the ball screw is usually more efficient as there are ball bearings between the nut and screw. The anti-friction ball bearing can increase the ball screw efficiency.