Mechanical linkage hand crank jacks for adjustable tables

The worm gear based mechanical screw jack is one of the most economical and efficient mechanism for lifting and lowering loads as well as push-pull applications. It can be used as a single unit or in multiple combination with manual or motorized drive. Mechanical linkage hand crank jacks for adjustable tables exported to Canada customers. The screw jack table include 4 units cubic screw jacks, 2 units 3-way gearboxes, couplings, connecting shafts and handwheel.