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 other machine screw actuators
No self-locking! Worm Gear Jack because of the lack of friction, a holding brake is essential: a electric motor brake or a spring pressure brake is necessary.
These worm equipment screw jacks are very precision and reliability, it could meet all the necessary protection, cost-efficiency, and durability 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 traveling 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 various other mechanical components. They also could be driven by different motors: electric, with either AC engine or DC motor and also hydraulic or pneumatic motors. Each one of these motion control products could 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 use trapezoidal screws Tr, because they are simple, robust and inexpensive. The proportion of screw jacks that make use of ball screws is however constantly increasing. The reason why for this are primarily their pitch precision, their high efficiency (less power consumption and less heat generation) and the higher pitches offered, which permit higher stroke speeds.
A screw jack can truly add a machine cut lifting nut. Because of 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 motion into linear motion. Out of this point to understand, an electric linear actuator can be a motorized screw jack.
The screw thread of screw jack can be acme screw and ball screw. So are there few variants of the screw jack. Commonly, machine screw jack and ball screw jack can be found in your engineer task. Weighed against acme screw, the ball screw is usually 
better as there are ball bearings between your nut and screw. The anti-friction ball bearing can increase the ball screw efficiency.