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 having less friction, a keeping brake is essential: a electric motor brake or a spring pressure brake is necessary.
These worm equipment screw jacks are extremely precision and reliability, it can meet all the necessary protection, cost-efficiency, and durability mandates of the application. High strength bronze worm gear is used, the payloads from 0.5T to 100T . A complete of 11 sizes can be found, each in a traveling nut version and a simple version.
The screw jacks can be utilized separately or in groups connected with drive shafts, joints, couplings, bevel gearboxes and additional mechanical components. They also could be driven by different motors: electrical, with either AC motor or DC motor as well as hydraulic or pneumatic motors. Each one of these Worm Gear Jack motion control items could 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 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 mainly their pitch accuracy, their high efficiency (much less power consumption and much less heat generation) and the bigger pitches offered, which permit higher stroke speeds.
A screw jack can truly add a machine cut lifting nut. For this model screw jack, just the bronze nut move along with the screw shaft. The lifting screw will not slide. It is definitely similar to the linear actuator working theory which converts rotational motion into linear motion. Out of this stage to understand, an electric 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 variants of the screw jack. Commonly, machine screw jack and ball screw jack are available in your engineer task. Compared with 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.