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 effectively than additional machine screw worm screw jack actuators
No self-locking! Due to having less friction, a keeping brake is essential: a electric motor brake or a springtime pressure brake is necessary.
These worm gear screw jacks are very precision and reliability, it could meet all of the necessary basic safety, cost-efficiency, and durability mandates of the application. High strength bronze worm gear is used, the payloads from 0.5T to 100T . A total of 11 sizes can be found, each in a vacationing nut version and a basic version.
The screw jacks can be used separately or in groups connected with drive shafts, joints, couplings, bevel gearboxes and various other mechanical components. In addition they could be powered by different motors: electric, with either AC engine or DC motor along with hydraulic or pneumatic motors. Each one of these motion control items can be built in many type jacking program 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 make use of ball screws is however constantly increasing. The reasons 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, only the bronze nut move together with the screw shaft. The lifting screw does not slide. It is certainly like the linear actuator operating principle which converts rotational movement into linear motion. From this point to understand, an electric 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 are available in your engineer project. Weighed against acme screw, the ball screw is definitely more efficient as there are ball bearings between the nut and screw. The anti-friction ball bearing can raise the ball screw efficiency.