DF20-2BD Double Boom Jumbo

DF20-2BD Double Boom Jumbo

This DF20-2BD double boom drill is a kind of crawler drilling machine typically used in tunneling construction of mining, metallurgy, water and electricity, railway, highway engineering, etc. The width of this double boom drill is 1.25m, which is suitable for medium and small section roadway. The cross section can be 5.5m (Length)×4.8m (Height). The drilling diameter is between 27 and 45mm. It can work on face of the tunnel, roof, side and floor. In addition, this kind of crawler drilling machine can not only drill the blast hole, but also drill the bolt hole easily.

1. The double boom drill, owning a drilling speed of 0.8-2 m/min, can work with high efficiency. It has an advanced hydraulically controlled drilling system which is safe and simple to operate. The system incorporates the auto stop and anti-jamming function, which make sure that the machine can stop automatically at the end-point and wash itself automatically.
2. This kind of crawler drilling machine has a low center of gravity, great mobility, remarkable stability and great grade ability.
3. This double boom drill is crawler walking, and it can work on the 14°slide way.
4. The crawler drilling machine can walk flexibly with diesel and electric drive which can work and rock under the condition of power shortage. Thus it greatly improves working efficiency and working quality.
5. This double boom drill features compact structure, small external dimensions, low consumption, low noise, multiple function and high efficiency. Equipped with other rock drills, it can enormously enhance the drilling speed.

1. Compared with other drill machines, the delivery cycle of this kind of crawler drilling machine is shorter, needing 60~90 days. And customized product requires 60~120 days.
2. Overseas customers can enjoy 24/7 after-sale service and dispatching service. We send professional engineers there to give technical instructions and maintenance. There is also components storage of this double boom drill there to supply timely.
3. It is stable to operate with no need of maintenance at front 2000 hours.

1. The hydraulic system of this crawler drilling machine adopts open-type system. It is controlled manually, which is easy to operate.
2. The hydraulic components are all with famous foreign brands.
3. The spiral swing cylinder of this double boom drill is good in performance and strong in stability.
4. The carriage has compact structure, light weight and strong rigidity.
5. The ceiling of the crawler drilling machine is safe.

Maintenance and Repair
1. Please refer to service manual to maintain and take good care of this double boom drill to prolong the operating life.
2. Remember to refer to the components atlas to purchase parts of this crawler drilling machine from the original supplier, in order to prolong the operating life.
3. The components are delivered along with the double boom drill.

Package and Transportation
This DF20-2BD crawler drilling machine is packed in nude by 40 foot container.

Technical Parameters of DF20-2BD Double Boom Drill

Specification Unit Parameters
Characteristics Drill Arm Number   2
Applicable Section m2 20
Working Range (W×H) mm 2×2--- 4.8×5.5
Working Specification (L x W x H) mm  8740×2153×1600
Walking Dimension (L x W x H) mm  8740×1350×1600
Drilling Diameter mm Φ27  Φ102
Drilling Depth (Once) mm 4200
Punching Speed m/min 0.8-2 
Drill Rod Length mm 4550
Total Weight kg 9500 
Hydraulic Rock Drill Characteristics   Impact & Water Transfer
Impact Impact Power J 200 
Impact Frequency Hz 60 
Working Pressure MPa 16 
Working Flow L/min 45 
Energy Accumulator N2 Pressure MPa
Rotation Rated Torque N.m 220
Rated Rotation Speed r/min  200
Working Pressure MPa
Working Flow L/min 45 
Water Washing Pressure MPa 1.2
Distance from Outside to Center mm 70 
Specification (L x W x H) mm 587×40×252 
Propeller Characteristics   Guide Rail Type
Propulsion Type   Oil Cylinder-Steel Wire Rope
Total Length mm 5350
Feeding Stroke mm 420000 
Propulsion N  9000
Propulsion Speed mm/min 4000 
Propeller Up and Down ° Down 105°   Up 15° 
Propeller Swing ° Inner 14°   Outer 47° 
Working Flow L/min  13
Drill Arm Drill Arm Number  
Propeller Compensation mm 1500 
Drill Arm Up and Down °  Up 55°   Down 16°
Drill Arm Rotation ° 360 
Drill Arm Swing ° Inner 45°    Outer 45°
Working Pressure MPa 21 
Working Flow L/min 13 
Traveling Mechanism Dynamic Mechanism   Hydraulic Motor & Reducer
Track Shoe Width mm 280 
Traveling Speed km/h 2.6 
Climbing Angle ° 14 
Hydraulic System Motor Motor Capacity kW 45+7.5+2.2 
Rated Voltage / Frequency V 380 / 660 
Rated Current A 84.2 / 48.6
Three Phase Voltage   380/660, 50 Hz  
Rotate Speed r/min 1470 
Anti-explosion Symbol   ExdI(ib) 
IP Coefficient   IP55 
Hydraulic Pump Type   Vane Pump
Rated Pressure MPa 21 
Speed mL/r 1000 
Oil Motor Type    
Rated Pressure MPa  
Flow mL/r  
Oil Tank Capacity L 370 
Accessories  Water Supply Working Pressure MPa 1-1.5 
Working Flow L/min 80 
Water Pump   High Pressure Centrifugal Pump
Rated Pressure MPa 1.5 
Rated Flow L/min 80
Air Compressor Working Pressure MPa 0.3-0.8 
Working Flow m³ /min
Type   Piston
Rated Pressure MPa 0.8 
Flow ml/r 1.08 
Anti-explosion Control Rated Voltage & Frequency V, Hz 50 
Rated Current A 160 
Triphase   Triphase AC  
Anti-explosion Symbol   ExdI(ib) 
IP Coefficient   IP55 
Security Control   Overload, Overvoltage, ShortCircuit, Low Voltage, Leakage

Founded in March, 2003, NANCHANG KAMACH MINING CO. ,LTD specializes in research, development, production and sales of mining machinery in China. Our company has advanced and scientific production technology and capacity as well as rapid innovation ability, so that our products account for a large market share in the domestic market. The mentioned double boom drill, a kind of crawler drilling machine, has been exported to many countries and regions. It has been winning widespread recognition and praise. If you are interested in this product, please feel free to contact us.

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