The role of the winch drum is mainly to transfer the speed and torque of the motor to it through the spindle into the linear speed of the wire rope around it, in order to lift and lower the object.
According to the different manufacturing process, the drum structure of the hoist can be divided into casting- welding mixed type (supporting wheel for casting, drum for welding) and welding type.
• Drum & drum shaft:
The drum diameter not less than 19 times of the wire rope diameter.
The drum wall can withstand the wrapped tight force of wire rope; the side can withstand the lateral force produced by wire rope.
The distance between drum side plate peripheral to the outermost roll rope not less than twice of the wire rope diameter.
| No: | Wire diameter(mm) | Pulling Force(KN) | Rotation Direction | Drum Diameter(mm) | Drum Length(mm) |
| 1 | 3~8 | 3~10 | Lefthand,Righthand | >160 | <1000 |
| 2 | 10~16 | 12~20 | Lefthand,Righthand | >320 | <1000 |
| 3 | 18~24 | 20~80 | Lefthand,Righthand | >480 | <1000 |
| 4 | 26~32 | 100~120 | Lefthand,Righthand | >640 | <1000 |
| 5 | 34~40 | 150~200 | Lefthand,Righthand | >800 | <1000 |
| 6 | 42~50 | 240~400 | Lefthand,Righthand | >1000 | <1000 |
range of application
a.Crane machinery: The bridge lifting machine, Tower crane, Gantry crane, Crawler crane winch, etc
b,The petroleum industry: Oil drilling rig, Petroleum tractor hoist, Petroleum workover rig, Trailer mounted pumping unit winch , Logging winch, etc
c.Offshore Marine machinery: Offshore petroleum crane winch, Mooring winch, Traction winch, Man-riding winch, Anchor winch, Hydraulic winch, etc
d. The construction machinery: Building wipe wall winch, Winding hoist, Windlass, etc
e. Engineering machinery: Cable winch, Tower crane, Piling machine, Hydraulic winch, etc
f. Mining winch: Dispatching winch, Prop-pulling winch, Sinking winch, etc
