| Specification | DQZR350SJ-I | DQZR350SJ-II |
| Nominal Drilling Depth (φ114mm Drill Pipe) | 5000m | 5000m |
| Rated Load | 3150kN | 3150kN |
| Power Supply | 600VAC/50Hz | 600VAC/50Hz |
| Rated Power (Continuous) | 265kW * 2 | 375kW * 2 |
| Spindle Speed Range | 0-220r/min | 0-220r/min |
| Continuous Drilling Torque | 56kN·m | 80kN·m |
| Maximum Make-up Torque | 84kN·m | 120kN·m |
| Backup Wrench Pipe Range | φ86~φ202mm | φ86~φ202mm |
| Hydraulic System Working Pressure | 16MPa | 16MPa |
| IBOP Rated Pressure | 70MPa | 70MPa |
| Mud Passage | 76mm | 76mm |
| Center Tube Through Hole Rated Pressure | 50MPa | 50MPa |
| Main Body Weight | 11T | 12T |
| Operating Temperature | -45℃~55℃ | -45℃~55℃ |
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