Worm screw jack: 1.Small size &easy installation; 2 Flexible ... ton, RN-50 ton, RN-100 ton;2.Configuration: Worm Gear, Worm Shaft, Taper Roll Bearings, Seals, Housing, Self-locking ... Low ratio,1 turn shaft,0.25 mm stroke;9.Electric Motor Horsepower Range 0.03 ~ 21.5 HP; ... is 3600 mm/min11.Accessories: Bevel Gearbox,Hand Wheel,Electric Motor,Motor Flange,Frequency Inverter,Safety Nut,Steel Cover,Rubber ...