... LT10 LT20 LT25 LT30 LT40 LT50 LT63 LT802.Configuration: worm and worm gear,bearing,housing and lead screw3.Function: Elevating, ... Positioning precision, Safely self-locking, Heavy duty, Uniform lifting speed, small sizes, easy installation,low noise,long life,security ... 3KN~ 80KN (per set) 7.accessory: motor,hand wheel,reducers,rubber Bellows,steel cover,bevel gearbox,frequency-inverter,brake,trunnion ...