Mechanical Drawworks
1. JC denotes drawworks.
2. 70 means the depth to be drilled is 7000m using 4 1/2 drill pipe.

JC70 Drawworks 

MECHANICAL DRIVEN DRAWWORKS

I. This kind of drawworks is available in three models

JC40        JC50       JC70

Model Description :

1. “JC”denotes drawworks.
 2. “70”means the depth to be drilled is 7000m using 4 1/2″drill pipe.

II. On the drum there is a spiral groove. The low-speed & high-speed ends of drum shaft are equipped with a ventilating air clutch. The brake rim (or disc) is water cooled and the surface is intermediate frequency quenched, which provides long service life.

III. Either band or disc brake system is considered as main brake and auxiliary brake as eddy current brake (water or air cooled).