High Air Pressure DTH Hammers
We offer IR hammer, DHD3.5, DHD340a, DHD360, DHD380, COP and QL hammer. The optimum range of hole size for blast drilling with DTH is 90mm to 254 mm, smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines. Our hammer like COP and QL are known for their reliability and longevity.
Because of economy and powerful drilling capacity, down the hole hammer become an advanced drilling tool for drilling and mining industries. Down the hole hammers and drill bits are designed together to work in perfect unison, giving high penetration rates, long service life and low costs.
1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.
2. Smooth performance and long service life of HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.
3. Low problem rate and easy to maintenance due to simple , reliable and easy assemble and disassemble inner structure of hammer.
4. Easy to depart bit from hammer due to multihead thread connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and drill pipe
Low pressure and high pressure hammers are available in our company.
· Suitable for high pressure drilling rigs
· Water well drilling
· Record breaking penetration
· Bench drilling
· Exploring Civil Engineering Applications
· Lowest cost per foot drilled
· Mining /Mineral Exploration
· Simple & robust design
· Exploring Civil Engineering Applications
· Oil well drilling
· Foot Valve not required in the bit
· Longer parts life
· Maximizes efficiency
· Develops greater power for any compressor capacities
· Penetrate 15% to 30% faster
· Provides additional production at a lower unit cost
(1)Size: 90mm-605mm
(2)DTH Hammer: 3”-12”
(3)Package: in wooden case
(4)Productivity: 2000pcs/month
| DHT 3.5 | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 4.4 Kg | 9 | External Cylinder | 9.5 Kg |
| 2 | ”O”Ring | 0.01 Kg | 10 | Stop Ring | 0.1 Kg |
| 3 | Check Valve | 0.2 Kg | 11 | O Ring of Top Sub | 0.01 Kg |
| 4 | Spring | 0.02 Kg | 12 | Drive Chuck | 2.1 Kg |
| 5 | Compression Buffer | 0.02 Kg | 13 | Drill Bit | |
| 6 | Air Distribution | 1.4 Kg | |||
| 7 | Inner Cylinder | 1.7 Kg | |||
| 8 | Piston | 5.6 Kg | |||
| DTH3.5 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 928mm | 25Kg | Φ82mm | API2 3/8″REG | DHD3.5 | Φ90-Φ110mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.5Mpa | ||||
| 1.0-1.7 Mpa | 30-60 r/min | 4.5m³/min | 8.5m³/min | ||
| M30-DTH Hammers | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 4.5 Kg | 9 | Guided Sleeve | 0.9 Kg |
| 2 | ”O”Ring | 0.01 Kg | 10 | Retainer Ring | 0.2 kg |
| 3 | Check Valve | 0.13 Kg | 11 | ”O”Ring | 0.01 Kg |
| 4 | Spring | 0.02 Kg | 12 | Drive Chuck | 2.5 kg |
| 5 | Valve Seat | 0.76 Kg | 13 | Drill Bit | |
| 6 | Inner Cylinder | 1.45 Kg | |||
| 7 | Piston | 4.8 Kg | |||
| 8 | Piston Case | 7.6 Kg | |||
| M30 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 931mmmm | 23Kg | Φ82mm | API2 3/8″REG | M30 | Φ90-Φ115mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.5Mpa | ||||
| 1.0-1.7Mpa | 30-50 r/min | 4m³/min | 6.5m³/min | ||
| DHT340-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 8.8 Kg | 9 | External Cylinder | 15.9 Kg |
| 2 | “O”Ring | 0.01 Kg | 10 | Stop Ring | 0.2 Kg |
| 3 | Check Valve | 0.46 Kg | 11 | “O”Ring | 0.01 Kg |
| 4 | Spring | 0.04 Kg | 12 | Drive Chuck | 3.7 Kg |
| 5 | Compression Buffer | 0.2 Kg | 13 | Drill Bit | |
| 6 | Air Distribution | 2.1 Kg | |||
| 7 | Internal Cylinder | 2.45 Kg | |||
| 8 | Piston | 9 Kg | |||
| DTH 340 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1032mm | 43Kg | Φ99mm | API2 3/8″REG | DHD340 | Φ110-Φ135mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.5Mpa | ||||
| 1.0-2.2Mpa | 30-60 r/min | 5.53m³/min | 10m³/min | ||
| QL40-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 8.8 Kg | 9 | Piston Case | 16.5 Kg |
| 2 | “O”Ring | 0.01 Kg | 10 | Guided Sleeve | 0.9 Kg |
| 3 | Check Valve | 0.46 Kg | 11 | Retainer Ring | 0.2 Kg |
| 4 | Spring | 0.04 Kg | 12 | “O”Ring | 0.01 Kg |
| 5 | rubber Buffer | 0.2 Kg | 13 | Drive Chuc | 3.3 Kg |
| 6 | Valve Sea | 2.1 Kg | 14 | Drill Bit | |
| 7 | Inner Cylinder | 2.45 Kg | |||
| 8 | Piston | 8.8 Kg | |||
| Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1102mm | 43.7Kg | Φ99mm | API2 3/8″REG | QL40 | Φ110-Φ135mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.2Mpa | 30-60 r/min | 5.5m³/min | 10m³/min | ||
| M40-DTH Hammer | |||||
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| Ref. | 部件 Parts | 单重 Weight | Ref. | 部件 Parts | 单重 Weight |
| 1 | 接头 Top Sub | 8.1 Kg | 9 | 衬套 Guided Sleeve | 1.84 Kg |
| 2 | O形圈 “O”Ring | 0.01 Kg | 10 | 卡环 Retainer Ring | 0.3 Kg |
| 3 | 逆止阀 Check Valve | 0.3 Kg | 11 | O形圈 “O”Ring | 0.01 Kg |
| 4 | 弹簧 Spring | 0.04 Kg | 12 | 卡钎套 Drive Chuck | 3.9 Kg |
| 5 | 配气座 Valve Seat | 1.5 Kg | 13 | 钻头 Drill Bit | |
| 6 | 内缸 Inner Cylinder | 2.1 Kg | |||
| 7 | 活塞 Piston | 8.4 Kg | |||
| 8 | 外缸 Piston Case | 15 Kg | |||
| M40 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1004mmmm | 40.5Kg | Φ99mm | API2 3/8″REG | M40 | Φ110-Φ135mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.5Mpa | ||||
| 1.0-2.2Mpa | 30-60 r/min | 5m³/min | 9m³/min | ||
| DHT350-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 14.7 Kg | 9 | Inner Cylinde | 4.9 Kg |
| 2 | “O”Ring | 0.02 Kg | 10 | Piston | 15.5 Kg |
| 3 | Check Valve | 1 Kg | 11 | Piston Case | 30.3 Kg |
| 4 | Spring | 0.06 Kg | 12 | Retainer Ringk | 0.3 Kg |
| 5 | regulate ring | 0.1 Kg | 13 | “O”Ring | 0.01 Kg |
| 6 | rubber Buffer | 0.06 Kg | 14 | Drive Chuck | 7.1 Kg |
| 7 | pedestal | 0.2 Kg | 15 | Drill Bit | |
| 8 | Valve Sea | 4.2 Kg | |||
| DHT 350 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1209mm | 78.5Kg | Φ125mm | API2 3/8″REG | DHD350 | Φ135-Φ155mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.5Mpa | 30-60 r/min | 9m³/min | 15m³/min | ||
| QL50-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 14.7 Kg | 9 | Piston Case | 24.7 Kg |
| 2 | “O”Ring | 0.02 Kg | 10 | Guided Sleeve | 1 Kg |
| 3 | Check Valve | 1 Kg | 11 | Retainer Ring | 0.6 Kg |
| 4 | Spring | 0.06 Kg | 12 | “O”Ring | 0.01 Kg |
| 5 | rubber Buffer | 0.2 Kg | 13 | Drive Chuc | 5.6 Kg |
| 6 | Valve Sea | 4.1 Kg | 14 | Drill Bit | |
| 7 | Inner Cylinder | 4.4 Kg | |||
| 8 | Piston | 17 Kg | |||
| QL50 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1154mm | 73.5Kg | Φ126mm | API2 3/8″REG | QL50 | Φ135-Φ155mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.5Mpa | 30-60 r/min | 9m³/min | 15m³/min | ||
| M50-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 13.7 Kg | 9 | Guided Sleeve | 2.6 Kg |
| 2 | “O”Ring | 0.02 Kg | 10 | Retainer Ring | 0.7 Kg |
| 3 | Check Valve | 0.7 Kg | 11 | “O”Ring | 0.01 Kg |
| 4 | Spring | 0.1 Kg | 12 | Drive Chuck | 7.1 Kg |
| 5 | Valve Seat | 2 Kg | 13 | Drill Bit | |
| 6 | Inner Cylinder | 2.8 Kg | |||
| 7 | Piston | 15 Kg | |||
| 8 | Piston Case | 24 Kg | |||
| Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1122mmmm | 70.5Kg | Φ126mm | API2 3/8″REG | M50 | Φ136-Φ155mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.5Mpa | 30-60 r/min | 7m³/min | 13m³/min | ||
| DHT 360-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 20.3 Kg | 9 | Piston Case | 37.2 Kg |
| 2 | “O”Ring | 0.02 Kg | 10 | Guided Sleeve | 2.5 Kg |
| 3 | Check Valve | 0.8 Kg | 11 | Retainer Ring | 0.6 Kg |
| 4 | Spring | 0.05 Kg | 12 | “O”Ring | 0.02 Kg |
| 5 | rubber Buffer | 0.3 Kg | 13 | Drive Chuck | 6 Kg |
| 6 | Valve Sea | 5 Kg | 14 | Drill Bit | |
| 7 | Inner Cylinder | 4 Kg | |||
| 8 | Piston | 23.5 Kg | |||
| DHD360 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1063mm | 100.5Kg | Φ142mm | API3 1/2″REG | DHD360 | Φ150-Φ190mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.5Mpa | 30-60 r/min | 9m³/min | 20m³/min | ||
| QL60-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 23 Kg | 9 | Piston Case | 39 Kg |
| 2 | “O”Ring | 0.02 Kg | 10 | Guided Sleeve | 1.1 Kg |
| 3 | Check Valve | 0.08 Kg | 11 | Retainer Ring | 0.6 Kg |
| 4 | Spring | 0.05 Kg | 12 | “O”Ring | 0.02 Kg |
| 5 | rubber Buffer | 0.3 Kg | 13 | Drive Chuck | 6.3 Kg |
| 6 | Valve Sea | 6.2 Kg | 14 | Drill Bit | |
| 7 | Inner Cylinder | 5 Kg | |||
| 8 | Piston | 23.5 Kg | |||
| QL60 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1211mm | 100.5Kg | Φ126mm | API3 1/2″REG | QL60 | Φ158-Φ190mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.5Mpa | 30-60 r/min | 9m³/min | 20m³/min | ||
| M60-DTH Hammer | |||||
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| Ref. | Parts | 单重 Weight | Ref. | 部件 Parts | 单重 Weight |
| 1 | Top Sub | 20 kg | 9 | Guided Sleeve | 4.8 kg |
| 2 | “O”Ring | 0.01 Kg | 10 | “O”Ring | 0.01 Kg |
| 3 | Check Valve | 0.56 Kg | 11 | Retainer Ring | 0.9 kg |
| 4 | Spring | 0.06 Kg | 12 | “O”Ring | 0.01 Kg |
| 5 | Valve Seat | 3.5 kg | 13 | Drive Chuck | 5.8 kg |
| 6 | Inner Cylinder | 3.9 kg | 14 | Drill Bit | |
| 7 | Piston | 21.5 kg | |||
| 8 | Piston Case | 30.5 kg | |||
| M60 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1129mmmm | 91.5Kg | Φ144mm | API3 1/2″REG | M60 | Φ152-Φ203mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.8Mpa | 30-60 r/min | 8m³/min | 17m³/min | ||
| DHT 380-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 42 Kg | 9 | Piston | 41.5 Kg |
| 2 | Adjuster Shim | 0.2 Kg | 10 | Piston Case | 62.5 Kg |
| 3 | “O”Ring | 0.02 Kg | 11 | Retainer Ring | 1.2 Kg |
| 4 | Check Valve | 1.3 Kg | 12 | “O”Ring | 0.02 Kg |
| 5 | Spring | 0.09 Kg | 13 | Adjuster Shim | 0.2 Kg |
| 6 | rubber Buffer | 0.4 Kg | 14 | Drive Chuck | 18.2 Kg |
| 7 | Valve Sea | 13 Kg | 15 | Drill Bit | |
| 8 | Inner Cylinder | 9.1 Kg | |||
| DHD380 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1492mm | 190Kg | Φ180mm | API4 1/2″REG | DHD380 | Φ195-Φ254mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.8Mpa | 2.4Mpa | ||||
| 1.5-3.3Mpa | 30-60 r/min | 26m³/min | 34m³/min | ||
| QL80-DTH Hammer | |||||
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| Ref. | Parts | Weight | Ref. | Parts | Weight |
| 1 | Top Sub | 42 Kg | 9 | Piston | 41 Kg |
| 2 | Adjuster Shim | 0.2 Kg | 10 | Piston Case | 64 Kg |
| 3 | “O”Ring | 0.02 Kg | 11 | Guided Sleeve | 2.9 Kg |
| 4 | Check Valve | 1.3 Kg | 12 | Retainer Ring | 1.2 Kg |
| 5 | Spring | 0.1 Kg | 13 | “O”Ring | 0.02 Kg |
| 6 | rubber Buffer | 0.4 Kg | 14 | Adjuster Shim | 0.2 Kg |
| 7 | Valve Sea | 12.7 Kg | 15 | Drive Chuck | 12 Kg |
| 8 | Inner Cylinder | 9.1 Kg | 16 | Drill Bit | |
| QL80 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1471mm | 187Kg | Φ180mm | API4 1/2″REG | QL80 | Φ195-Φ254mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.8Mpa | 2.4Mpa | ||||
| 1.5-3.3Mpa | 30-60 r/min | 26m³/min | 34m³/min | ||
| M80-DTH Hammer | |||||
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| Ref. | 部件 Parts | 单重 Weight | Ref. | 部件 Parts | 单重 Weight |
| 1 | 接头 Top Sub | 43 Kg | 10 | 尼龙塞 Nylon Plug | 0.04 Kg |
| 2 | O形圈 “O”Ring | 0.01 Kg | 11 | 活塞 Piston | 42 Kg |
| 3 | 逆止阀 Check Valve | 0.46 Kg | 12 | 外缸 Piston Case | 43 Kg |
| 4 | 弹簧 Spring | 0.07 Kg | 13 | 衬套 Guided Sleeve | 9.8 Kg |
| 5 | 阀座 Valve Seat | 0.65 Kg | 14 | 挡圈 Check Ring | 0.09 Kg |
| 6 | O形圈 “O”Ring | 0.01 Kg | 15 | 卡环 Retainer Ring | 1.9 Kg |
| 7 | 插销 Bole | 0.3 Kg | 16 | O形圈 “O”Ring | 0.01 Kg |
| 8 | O形圈 “O”Ring | 0.01 Kg | 17 | 卡钎套 Drive Chuck | 17 Kg |
| 9 | 配气杆 Rigid Valve | 2 Kg | 18 | 钻头 Drill Bit | |
| M80 Technical parameters | |||||
| Length(Without Bit) | Weight | External diameter | Connection Thread | Bit Shank | Hole Range |
| 1333mmmm | 160.5Kg | Φ180mm | API4 1/2″REG | M80 | Φ195-Φ245mm |
| Working pressure | Recommended rotation speed | Air Consumption | |||
| 1.8Mpa | 2.4Mpa | ||||
| 1.5-3.3Mpa | 30-60 r/min | 26m³/min | 35m³/min | ||
