Screw lifter, WPT120-40T(40 tons) Screw screw lifter: WPT series screw lifter is widely used in machinery and equipment, ceramic production, glass machinery, woodworking machinery, metallurgy, construction, chemical, medical, textile and other industries. With self-locking function, convenient and practical, play a mechanical device lifting positioning and displacement and other purposes. Features: small size, light weight, positive and negative operation, multiple functions, low noise, compact structure, convenient installation, flexible use, wide power source, and long service life.