Drawworks
Time：2016/11/06 Traffic：
Model Specification:
| Model | JC 40 | JC 40D | JC 40DB | JC 50 | JC 50D | JC 50DB | JC 70 | JC 70D | JC70 DB | JC 90DB | |
| Nom. Depth m(ft) | Ф114 mm | 2500-4000 | 3500-5000 | 4500-7000 | 6000- 9000 | ||||||
| Ф127 mm | 2000-3200 | 2800-4500 | 4000-6000 | 5000- 8000 | |||||||
| Rated power kW (HP) | 735(1000) | 1100(1500) | 1470(2000) | 2210 (3000) | |||||||
| Qty of motor * rated power kW(HP) | 2×438(537)/ 1×800(1072) | 2×600 | 2×800 (1072) | 2×600 | 2×800 (1072) | 2×1000 | 2×1200 | ||||
| Rated speed of motor r/min | 880/970 | 970 | 970 | ||||||||
| Max. fastline pull kN | 275 | 340 | 485 | 630 | |||||||
| Dia. of drilling line mm(in) | 32 (1 1/4) | 35 (1 3/8) | 38 (1 1/2) | 45 (1 3/4) | |||||||
| Main drum size (D×L) mm(in) | 640×1235 (25 1/4×48 1/2) | 685×1245 (27×49) | 770×1436 (30×56 1/2) | 980×1556 (36×38 1/2) | |||||||
| Drum hub size of band brake (D×W) mm(in) | 1168×265 (46×10 1/2) | 1270×267 (50×10 1/2) | 1370×267 (54×10 1/2) | ||||||||
| Brake disc size of disc brake (D×W) mm(in) | 1500×7(59×3) | 1600×76(63×3) | 1600×76 (63×3) | 2100×76 (82 5/8×3) | |||||||
| Power of automatic driller motor KW(HP) | 45(60) | 45(60) | 45(60) | 2×45 (2×60) | |||||||
| Sand drum capacity (Ф14.5 wireline) mm(in) | 4000 (11480) | 5000 (14760) | 7000 (19685) | ||||||||
| Auxiliary brake | DS40 | Dynamic brake | DS50 | Dynamic brake | DS70 | Dynamic brake | Dynamic brake | ||||
| Transmission model | Reducer drive | Reducer drive | Reducer drive | Reducer drive | |||||||
