Model:50DB, 70DB, 40DB, 30DB
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| Model of rig | ZJ40/2250DB | ZJ50/3150DB | ZJ70/4500DB | |||
| Nominal depth, m(ft) | 114mm (4 1/2 in. ) DP | 2500-4000 (8200-13200) | 3500-5000 (11500-16400) | 4500-7000 (14800-23000) | ||
| 127mm (5 in. ) DP | 2000-3200 (6600-10500) | 2800-4500 (9200-14800) | 4000-6000 (13100-19700) | |||
| Max. static hook load, kN (kips) | 2250(496) | 3150(695) | 4500(992) | |||
| Max. line number | 5× 6 | 6× 7 | 6× 7 | |||
| Rated power of drawworks, kW(hp) | 735(1000) | 1000(1340) | 1100( 1500) | 1470 (2000) | ||
| Type of main brake | Disk brake /Band brake | Disk brake /Band brake | Disk brake /Band brake | |||
| Type of auxiliary brake | Energy consumption brake / Eddy current brake / Eaton brake | Energy consumption brake / Eddy current brake / Eaton brake | Energy consumption brake / Eddy current brake / Eaton brake | |||
| Opening diameter of rotary table, mm(in) | 698.5(271/2) | 698.5 (271/2) | 952.5 (371/2) | 952.5 (37 1/2) | ||
| Mast effective height, m(ft) | 43 (142) | 45 (147) | 45 (147) | |||
| Drill floor height, m(ft) | 5(16.4), 6(19.7), 7.5(25) | 7.5(25), 9(30), 10.5 (35) | 7.5(25), 9(30), 10.5 (35) | |||
| Drill floor clearance height, m(ft) | 3.76(12.4), 4.76(15.6), 6.26(20.5) | 6.12(20), 7.62 (25), 9.12 (30) | 6.12(20), 7.62 (25), 9.12 (30) | |||
| Note: DB-- AC VFD Electric Drilling Rig | ||||||
