top drive 250ton highn toque available in stock
DQ40B Top Drive: Engineering Resilience for Extreme Demands
300T Hook Load | 50 kN·m Continuous Torque | 75 kN·m Max Breakout Torque
Unlock unmatched drilling endurance with the **DQ40B Top Drive**—built to dominate the harshest environments. Engineered with **6 revolutionary innovations** to maximize component life and minimize downtime:
1. **Tilting Back Clamp**
→ 35% enhanced stability for precision drilling.
2. **Gear-Rack IBOP Actuator**
→ ≤0.1mm ultra-precision control.
3. **5 Redundant Hydraulic Circuits**
→ 100% signal reliability, zero failures.
4. **Integrated Lower Balancing System**
→ 50% faster deployment speed.
5. **Split-Type Carriage System**
→ Micro-adjustable wear-plates extend service life in desert/sand operations.
6. **Twin-Cooling Hydraulics**
→ Guaranteed performance from **-30°C to 55°C**.
**Game-Changing Extras:**
✓ **HP Pre-Tensioned Washpipe**
40% longer lifespan vs. industry average.
✓ **Desert-Proof Durability**
Engineered for relentless sand, heat, and corrosion.
Class | DQ40B-VSP |
Nominal drilling depth range (114mm drill pipe) | 4000m~4500m |
Rated Load | 2666 KN |
Working Height (2.74m Lifting Link) | 5770mm |
Rated Continuous Output Torque | 50 KN.m |
Maximum Breaking Torque | 75 KN.m |
Static maximum braking torque | 50 KN.m |
Rotating Link Adaptor Rotation Angle | 0-360° |
Speed Range of Main Shaft(infinitely adjustable) | 0-180r/min |
Back clamp clamping range of drill pipe | 85mm-187mm |
Mud circulation channel rated pressure | 35/52 MPa |
Hydraulic system working pressure | 0~14 Mpa |
Main motor rated power | 470KW |
Electric control room input power | 600 VAC/50Hz |
Applicable ambient temperature | -45℃~55℃ |
Distance between main shaft center and guide rail center | 525×505mm |
IBOP rated pressure(Hydraulic / Manual) | 105 MPa |
Dimensions | 5600mm*1255mm*1153mm |






