HEAD SHEAVE
Head sheave adopts the overall casting structure, which can be divided into:fixed sheave above the well and unfixed head sheave,ect.It can be used as a support to guide rope for steering, and rope groove is with a plastic lining or plastic block,which can extend the service life of the wire rope. 

 I will appreciate much if you can give us some details below.
1. Usage of machine (mine or something else)
2.Lifting workers or materials
3.The loading capacity
4.If mi9ne,verticle or inclined
5.Depth of mine(angle if inclined)
6.Dia. and width of drum
7.Dia. of the rope
8.Lifting speed you want (m/s)
9.The power and voltage of motor
10.The electrical control system