Description

technical specification: Model JC*0DB Nominal drill depth ***0 m Rated input power ***0 KW Max. pulling of fast line **7 mm Diameter of drill line *8 mm Drum size (D×L) **0×***4 mm Hoisting speeds 1F *1R Auxiliary brake FDWS*0 Dimension (L×W×H) mm ***0×***0 ×***0 weight ****0 Kg features : 1.All bearing are rolling bearings and the shafts are made of alloy steel. ***** chains are forced lubricated ***** drum is grooved. The low-speed & high-speed ends of drum shaft are epuipped with a ventilating air tube clutch ***** brake rim(or disc) is watetr cooled and the surface is medium-frequency induction hardened which provides long service life. ***** contours of the sprocket teeth are medium frequency induction hardened. 6.All transmission clutches are of involute spline type. ***** drawworks can be epuipped with either a band or discbrake system. The auxiliary brake can be equipped with either an eddy current brake or an EATON brake.