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February 12, 2020

Screw Jack
A jackscrew, or screw jack, is a kind of jack that is operated by turning a leadscrew. It is frequently utilized to lift moderately weighty weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and since adjustable supports for weighty loads, like the foundations of houses.
A screw jack consists of a heavy-duty vertical screw with a load table mounted upon its top, which screws into a threaded hole in a stationary support frame with a wide base resting on the floor. A rotating collar on the head of the screw offers holes into which the handle, a metallic bar, suits. When the deal with is turned clockwise, the screw movements further from the base, lifting the strain resting on the load table. In order to support large load forces, the screw generally has either sq . threads or buttress threads.
An advantage of jackscrews over some other types of jack is that they are self-locking, this means when the rotational force on the screw is eliminated, it’ll remain motionless where it was left and will not rotate backwards, it doesn’t matter how much load it is assisting. This makes them inherently safer than hydraulic jacks, for instance, that may move backwards under load if the power on the hydraulic actuator is definitely accidentally released.
Worm Screw Jack or screw lift lifts widely used in machine building, metallurgy, construction, irrigation products and various other industries, is starting up, and dropped through accessories advance, overturned and placement adjustment and other features in various altitudes. SWL is definitely a worm screw-lift crane elements foundation with compact structure, small size and light weight. Sources extensive, no sound, easy installation, the use of flexible, multi-function, assisting forms, high reliability, extended life and many other advantages. Could be one or in combination, can be controlled accurately in accordance with certain procedures to improve or promote the adjustment of height Motor power can be utilized directly or can also be manually operated. It’s a type of structure and assembly, and the elevation can be customized user requirements
Screw jack is utilized in applications where linear movement is required. Lifting of any load, pressing or pulling of mechanical tools, adjusting of restricted clearances of mechanical parts can be achieved by screw jacks. Mechanical capacity of screw jacks can be between 5kN and 2000kN. Jack screws can be used as linear motors, linear actuators, or mechanical lifts depending on type of motion.
How Screw Jacks Function ?
Main components of screw jacks are; trapezoidal lifting screw, worm screw, worm gear and gear casing. Worm screw is rotated manually or by electric motor. Worm gear is rotated by worm screw. The lifting screw techniques through the rotating worm gear. The linear motion speed of lifting screw depends on thread size and rotation ratio of worm gears.
In some types of jack screws, The lifting screw does not move up and down. It only rotates around its axis. A lifting nut (also known as travelling nut) movements along the screw. The lifting nut of jack screw is constructed of bronze to diminish friction.
crew Jack Applications
Paper, press, printing industry
Gypsum factories
Sheet metal forming machinery
Mechanical lifting applications
Platform lifting applications
Food processing machinery
Construction sector
Bridge jacks for street and bridge lifting
Shipyards
Opening and closing of penstocks
Industrial process
Roll form machinery
Mining industry
Defense industry
Lift tables
Stage setup applications

Mechanical screw jacks can be operated by manually or by electric motor. Several screw jacks can be connected together to go simultaneously.
Mechanical Lifting and Pulling Screw Jacks These versions are used rather than hydraulic jacks where pushing and pulling is certainly neeed between heavy elements espacially in commercial building construction works, industrial machinery installations, bridge constructions.

Mechanical Lifting Screw Jack
Screw Jack
Materials Available
Stainless/Steel/Steel/Brass/Bronze/Iron/ Aluminum
OEM according to your request