... ~ 100ton 2. Dynamic Loading: 0.1 ton to 26 ton Ball Screw Jack Description : 1.Model: RN-0.5T,1T,2T ... ,20T,30T,40T,50T,100T2.Configuration: worm shaft,worm gear,bearing,oil seal,housing and lifting Screw3.Function: Elevating, Lowering, Pulling ... Speed: 75 mm/min ~1800 mm/min11.Accessory: Geared motor,Ordinary Motor,hand wheel,rubber Bellows,steel cover,bevel gearbox,frequency-inverter ...