5 inch DTH hammer and bit
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Industry Technology Down The Hole Hammer & Bit

The Characteristics Of High Air Pressure DTH Hammer -with foot valve It is a kind of valveless high air pressure DTH Hammer with foot valve It has the following characteristics: ♦ Valveless air distribution. More reliable. ♦ Simple design of the piston, long life. ♦ More efficient energy transfer,faster drilling speed, lower air consumption and lower oil consumption. ♦ Fewer internal parts, simple structure,longer life, Less failure and easier to maintain because all the parts are heat treated. ♦ Easy to disassemble because the top sub, the drive chuck and the external cylinder are...

MD55 DTH HAMMER High Air Pressure with foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

High Air Pressure with foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

Item Description High Air Pressure with foot valve DTH Hammers According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Detailed air consumption can be seen in appendix,P73

The Characteristics Of High Air Pressure -without foot valve DTH Hammers It is a kind of high air pressure DTH Hammer without foot valve,our newest design.It is also one of the most advanced DTH Hammers in the word. It has the following characteristics: ♦ Out of the trouble of foot valve fracture and expansion and contraction. ♦ Lower energy consumption and higher impact frequency. ♦ The drilling speed is 15%-30% higher than the same type with the valve ♦ Simple structure ,reliable parts, long life , easy and cheap maintenance. ♦ Lower air and oil consumption. The oil consumption is about...

MD55A DTH HAMMER High Air Pressure without foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

High Air Pressure without foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

MM5A DTH HAMMER High Air Pressure without foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

High Air Pressure without foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

MQL5A DTH HAMMER High Air Pressure without foot valve DTH Hammers Item Description According to your request,the top sub can be made into two spanners,and put protection buttons.An air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge. Technical Date Length(Less bit) Detailed air consumption can be seen in appendix,P73

Drop Center For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control. Concave Face The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity. Convex Face For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash,and may reduce the load and wear on the gauge buttons, but poor hole deviation control. Double Gauge Face This kind of face shape is suitable...

Carbide Button Shape Selection Domed/ Round Button Domed/ Round Buttons are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations. Parabolic/Semi-Ballistic Button Parabolic buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations. Ballistic Button Ballistic Buttons are usually used as front buttons of DTH Bits, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft. Sharp Button Sharp Buttons are usually used as front buttons...

Box-Box Adapters Connection

Pin-Pin Adapters Connection

♦ Put hammer in the bench. . Adjust the position of hammer and wrench; use wrench to block the top sub side of hammer; let wrench and jack in the same face. ♦ Fix K-shaped base with nut. ♦ Fix wrench with nuts. ♦ Shake handle of Jack slowly till top sub away from hammer. ♦ After top sub dismantled, grease the jack, release nuts, discharge the K-shaped base and turn around the Hammer. ♦ Adjust the position of hammer and wrench ; use wrench to block the drive chuck of hammer;let wrench and jack in the same face. ♦ Fix K-shaped base and the wrench with nut. ♦ Shake handle of Jack slowly till...