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 various other machine screw actuators
No self-locking! Due to the lack of friction, a holding brake is necessary: a electric motor brake or a spring pressure brake is necessary.
These worm equipment screw jacks are very precision and reliability, it can meet all of the necessary security, 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 are available, each in a worm screw jack vacationing 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. In addition they could be powered by different motors: electric, with either AC motor or DC motor along with hydraulic or pneumatic motors. All these motion control products can 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’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 precision, their high efficiency (much less power consumption and less heat generation) and the higher pitches obtainable, 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 along with the screw shaft. The lifting screw will not slide. It is like the linear actuator working basic principle which converts rotational motion into linear motion. From this point to understand, an electric linear actuator can be a motorized screw jack.

The screw thread of screw jack could be acme screw and ball screw. So there are few variants 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 is definitely better as there are ball bearings between your nut and screw. The anti-friction ball bearing can increase the ball screw efficiency.