Profile: Shackleton Engineering Ltd. specializes in supplying industrial gearboxes. We offer a range of screw jacks from 1 to 300 tonne capacity. We can supply kits of parts to include bearings & seals, worm & wheel, machine parts and screw. Conveyor and crane gearboxes can be designed specific to the application, or using standard helical industrial gearboxes. The gearboxes can be supplied as motor gearbox units assembled on baseplates for convenience. Electromagnetic brakes, back stops, clutches, couplings, and other mechanical devices can be incorporated in the design to give a complete drive unit.