... type screw jack can be directly connected with electric motor,or gear reducer. electric screw lifts Detailed Informations:For easy installation, ... mounts come with necessary hardware and coupling keys. All standard electric motors are 3 phase, 380VAC, 50 Hz, 1440 rpm. ... ,Roll forming machines,Tunnel freezer systems,Oven lifters,Vacuum furnace lid lifters,Conveyor lifts,Air dampers,Theatre stages,Glass ...