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Drawworks
The drawworks are complete in series and have single and double drum and multiple shaft structures and driven mechanically or electrically; the main and auxiliary brakes are reasonable in arrangement to meet the requirement of the power transmission and drilling/workover operation of the drilling rig and workover rig.
The drawworks are subjected to (hydraulic, air, electrical) centralized control to make the operation convenient.
The gearbox of electrically driven drawworks is big modulus, hard tooth flank type gear with forced lubrication.
The design and manufacture of the drawworks conform to API Spec 7K standard.
Model | Drawworks Power(kw/hp) | Fast Line Pulling Force(ton/lbs) | Wireline Dia.(mm/in) | Main Drum Dia.×width (mm) | Sand Drum Dia.×width(mm) | Brake Hub (Disc)Dia.×width(mm) | Auxiliary Brake Type | Master Clutch | Weight(kg) |
JC14 | 257/350 | 14/30865 | Φ22/Φ7/8 | Φ336×770 | / | Φ965×260 | / | ATD224H | 3298 |
JC14-1 | 257/350 | 14/30865 | Φ26/Φ1 | Φ406×775 | / | Φ1070×264 | KOBELT,5022A | ATD-224H | 3900 |
JC18 | 330/450 | 18/39683 | Φ26/Φ1 | Φ406×937 | Φ315×945optional | Φ1070×264 | water brake /124WCB | ATD324H | 6579 |
JC21 | 450/550 | 21/46297 | Φ29/Φ11/8 | Φ450×912 | Φ340×945optional | Φ1070×305 | 224WCB | ATD324H | 6999 |
JC23 | 550/750 | 23/50706 | Φ29/Φ11/8 | Φ528×1021 | Φ315×104 | Φ1450×40 | 324WCB2 | ATD330H | 8912 |