Screw Jacks are integrated gearboxes that incorporate a trapezoidal screw, which in a number of different combinations can provide push, pull, lift and lower driving force.
These can have a ball or acme screw driven through a gearbox arrangement to provide actuation either stand alone or in mechanically fixed sequence with many jacks.
Statewide Bearings can provide a comprehensive range of configurations in screw jacks including metric and imperial versions, ball screw jacks, acme screw jacks, stainless jacks, upright, inverted, high duty cycle with further options using plain or ball screw nuts and bellow protected screw and rear protection tubes.
Ball Screw Jacks differ from Acme Jacks in that the gear unit and subsequent linear drive is performed by a ball screw. This provides the following advantages over Acme.
The Ball Screw Jack type operate much the same as the Acme type, offering push pull loads, mounting – vertically, upward, downward or horizontally.
There are 3 main series