This kind of drawworks is available in four models: JC40D JC50D JC70D JC90D Model Description 1. "JC"denotes drawworks. 2. "70"means the depth to be drilled is 7000m using 4 1/2drill pipe. 3. "D"shows the drive mode is direct current.
The hydraulic disc brake is regarded as main brake. The disc brake is water or air cooled. The eddy current brake (air & water cooled) is considered as an auxiliary brake. Eaton brake can also be equipped with. Air-gear-shifting structure Chain drive Integral or Split structure