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Drilling rig drawwork Model 30DB (750HP) API 7K standard rated power 550KW
ZPEC drawworks covers single shaft single speed gear transmission, single shaft dual speed transmission, three speed transmission, and four speed transmission structures.
Features of single shaft gear transmission:
This is main component of DB (VFD) series rigs;
Drawworks gear box with single shift stepless speed and two shifts stepless speed;
Single shift stepless speed gives hook speed 1.2 to 1.5 meters and two shifts stepless speed gives 1.2 to 1.7 meters
Three shafts four speed chain transmission:
This is the main component of DZ (SCR) series rig;
Drawworks consists of input, mid and drum shafts to form 4 forward and two reverse shifts (4+2R). max. hook speed is 1.2 to 1.7 meters per second.
Drawworks components design conforms to API Spec 7K.
| Model | JC30DB (750HP)
| JC40DB (1000HP) | JC50DB (1500HP) | JC70DB (2000HP) | JC90DB (3000HP) | |
| Specifications | ||||||
| Rated power. | Kw(HP) | 550 (750) | 735(1000) | 1100(1500) | 1470(2000) | 2210(3000 ) |
| Fast line pull. | KN (lbs) | 210(46300) | 275(60640) | 340(75000) | 485(107000) | 575(127000) |
| Dia of drilling line. | mm (in) | 29 (1-1/8”) | 32(1-1/4”) | 35(1-3/8” ) | 38(1-1/2”) | 45(1-3/4”) |
| Dia. of drum×Length. | mm (in) | 560×1095 (22×43) | 640×1139 (25×45) | 685× 1245 (27×49) | 770×1439 (30×57) | 915×1580 (36×62) |
| Main brake | Hyd. Disk brake | Hyd. Disk brake | Hyd. Disk brake | Hyd. Disk brake | Hyd. Disk brake | |
| Auxiliary brake | DYNAMIC BRAKE | DYNAMIC BRAKE | DYNAMIC BRAKE | DYNAMIC BRAKE | DYNAMIC BRAKE | |
| Auto driller | yes | yes | yes | yes | yes | |