Eight-set linkage screw jack system can be 2H and H configuration, transmission efficiency 80%.

Screw jack/lift is a basis jack-up part, accomplish the functions such as lifting, drop, push  and inverting through worm gear drives screw.

Heavy Load Worm Gear Screw Jacks combine a machine screw jack, motor and gear reducer into a single compact unit.

Heavy Duty Worm Gear ACME Screw Jacks combine an acme screw jack, motor and gear reducer into a single compact unit.

The motor for screw jack can be servo motor,AC motor or DC motor. Its load capacity can be from 2.5ton to 120ton.

ACME worm screw jacks are widely used, they are suitable for heavy load and low speed, and they have self-lock function.

SWL Stainless Steel Hand Crank Screw Actuator is a basic lifting component. It has many characteristics, such as compact structure, small size, light weight, wide power source, no noise, convenient installation, flexible use, multiple functions, various supporting forms, high reliability and long service life. It can be used alone or in combination. It can accurately control and adjust the height of lifting or propulsion according to a certain program. It can be driven directly by motor or other power or manually. It has different structure type and assembly type, and lifting height can be customized according to user's requirements.  

Screw jack is used in applications where linear motion is required. Lifting of any load, pushing or pulling of mechanical equipment, adjusting of tight clearances of mechanical parts can be done by screw jacks. Mechanical capacity of screw jacks is between 5kN and 2000kN, Jack screws can be used as linear motors, linear actuators, or mechanical lifts depending on type of motion. Working Principle of Screw Jacks Main components of screw jacks are: trapezoidal lifting screw, worm screw, worm gear and gear housing, Worm screw is rotated manually or by motor. Worm gear is rotated by worm screw. The lifting screw moves through the rotating worm gear. The linear motion speed of lifting screw depends on thread size and rotation ratio of worm gears.

The screw jack linkage design is to connect more than two sets of screw jacks together through couplings, connecting rods and with motor other accessories.

Travelling Nut Screw Jacks ,or Rotating Screw Jacks have a fixed length lifting screw that rotates . Loads are attached to a flanged “traveling” nut that translates up and down the length of the rotating screw. This type of jack is ideal for applications that cannot accommodate a screw protection tube or that require a flush mount.

Up and down at the same time , and rotate in the same section . Arrangement recommends no more than 400MM in one minute. If the connecting shaft is used in arrangement with more than 1.5 meters, it is recommended to use a Trunnion. It is suitable for industrial applications in a variety of industries, with a variety of combinations and flexible operation.

SWL series screw jacks are widely used in industries such as metallurgy,mining,hoisting and transportation, electrical power,energy source, construction and building material,light industry and traffic industry.