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! Due to 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 basic safety, cost-efficiency, and strength mandates of your application. High strength bronze worm gear is used, the payloads from 0.5T to 100T . A total of 11 sizes are available, each in a touring nut version and a worm screw jack simple version.
The screw jacks can be utilized separately or in groups linked with drive shafts, joints, couplings, bevel gearboxes and various other mechanical components. In addition they could be powered by different motors: electrical, with either AC electric motor or DC motor along with hydraulic or pneumatic motors. Each one of these motion control products could be built-in many type jacking program 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 make use of ball screws is however constantly increasing. The reasons for this are primarily their pitch accuracy, their high efficiency (much 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. For this model screw jack, only the bronze nut move along with the screw shaft. The lifting screw 
does not slide. It is similar to the linear actuator operating theory which converts rotational movement into linear motion. From this point to understand, a power linear actuator is usually a motorized screw jack.
The screw thread of screw jack can be acme screw and ball screw. So are there few variations of the screw jack. Commonly, machine screw jack and ball screw jack can be found in your engineer project. Compared with acme screw, the ball screw can be better as there are ball bearings between your nut and screw. The anti-friction ball bearing can raise the ball screw efficiency.