Features：

◆ In accordance with API Spec.7K and marked with API MONOGRAM.

◆ The shafts are made of the alloy steel and supported by the roller bearings.

◆ Roller chain transmission with high accuracy and enough strength, forced lubrication.

◆ Drum is grooved with LEBUS type.

◆ Transmission gears are shifted by the air clutches.

◆ Major brake adopts Hydraulic Disc Brake or Belt Brake.

◆ Auxiliary brake adopts Eddy Current Brake or WCB type.