Four-set linkage screw jack system can be  I and T configuration, transmission efficiency can be 85% .

Worm Screw Jacks HK series belong to trapezoidal screw jacks. They are available in a useful range up to a capacity of 100T and are competitively priced.

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

ACME worm screw jack is very popular for lifting. Both translating and rotating design are available.

Electric machine screw jack,also called motorized machine screw jack, is very popular for lifting.

Rotating Nut Design ( Traveling Nut ) These 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 .