Structure Type
No.1 screw lifter is orbiting meanwhile end movement
No.2 screw lifter is operated with orbiting, the nut does end movement
Mounting Type
Each structure is divided into two mounting types:
A screw lifter does upward movement
B screw lifter does downward movement
Screw Head Type
Head of NO.1 screw lifter is divided into:ⅠCylindrical ⅡFlange ⅢScrew ⅣFlat Head
Head of NO.2 screw lifter has two divisions:ⅠCylindrical ⅢScrew
Lifter has two kinds of ratio: normal(P)and low-speed(M)
Protection of Lifter
No.1 protection: basic、rotary and with shield type
No.2 protaction: basic and with shield type
