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DTH HAMMER

Product catalog summary

Overview: The document provides comprehensive specifications and technical data for various models of Down The Hole (DTH) hammers and bits, focusing on high air pressure hammers with foot valves. It includes descriptions of components, technical specifications, and operational guidelines for drilling applications such as water wells, oil, gas, and construction.

DTH Hammers with Foot Valve: These hammers feature valveless air distribution for enhanced reliability and efficiency. They have a simple piston design for longevity, efficient energy transfer, and reduced air and oil consumption. The structure is simplified with fewer internal parts, facilitating easier maintenance. Multistep threads allow for easy disassembly.

Technical Specifications: Each hammer model is detailed with components, weights, and part numbers. Key parameters include length, weight, external diameter, bit shank, hole range, connection thread, working pressure, impact rate, recommended rotation speed, and air consumption. For example, the MD35 model has a length of 930mm, a weight of 25kg, and operates at a working pressure of 1.0-1.5Mpa with an air consumption of 4.5-9.0m³/min.

Customization Options: Certain components, like the top sub, can be customized with additional features such as spanners and protection buttons. An air controlling hole can be added to the check valve for more efficient cuttings discharge.

Models Covered: The document covers multiple models, including MD35, MD45, MSD4, MQL4, MD55, MSD5, MQL5, MD65, MSD6, MQL6, MD85, MSD8, MQL8, and MSD10, each with specific technical data and part descriptions.

Key Features: The hammers are designed for high efficiency and durability, with features like heat-treated parts for longer life and reduced failure rates. Proper maintenance and customization are emphasized to enhance performance.

Design Features: The hammers are designed using the latest rock drilling theory to optimize energy transfer, speed, and air consumption. Special features include an anti-shedding device for the drill bit and replaceable check valves for efficient cutting discharge.

Bit Face and Button Shape Selection: Various bit face shapes (e.g., Drop Center, Concave Face) and carbide button shapes (e.g., Domed, Parabolic) are described for different rock formations and drilling conditions.

Product Codes: An explanation of product codes is provided, such as MD18A, where 'M' stands for Maxdrill, 'D' for Down The Hole, and '330' for the outer diameter of the hammer.

Recommendations: The document suggests using specific face shapes and button types based on the rock formation and desired penetration rates. It also highlights the importance of selecting the appropriate air pressure and rotation speed for optimal performance.

Drill Tube Specifications: Various drill tubes are specified with outer diameters ranging from 76mm to 152mm, including API connection type, tool joint dimensions, allowed pull-down force, and approximate weight for a 3-meter length.

Adapters: Specifications for Box-Box, Pin-Box, and Pin-Pin adapters include connection types, lengths, shoulder lengths, spanner flat widths, and standard bore diameters.

Long Shank Bit Specifications: Bits are specified by diameter, gauge, front flushing holes, weight, and part number, with diameters ranging from 90mm to 165mm.

Product Pressure and Thread Specifications: Products are specified by pressure (8 Bar), thread type, total length, diameter, and weight, including models like BH140, BH160, BH190, and BH240.

Back Hammer: The backhammer is used to prevent jamming during drilling, providing reverse impact and vibration. Maintenance involves keeping it clean and protecting the linking section.

Breakout Bench Operation Method: The breakout bench is used for dismantling hammer components, involving positioning the hammer, adjusting the wrench, fixing the base and wrench with nuts, and using a jack to separate components. Greasing and releasing nuts are part of the procedure.

Catalog excerpts

® MAXDRILL I & KEMRICO Industry Technology I

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Down The Hole Hammer & Bit 01

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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 connected...

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MD35 DTH HAMMER High Air Pressure with foot vlave DTH Hammers Item Description Technical Date Length(Less bit)

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MSD4 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) Weight(Less bit) External diameter

Open the catalog to page 6

rxtafiy locfrtokigy I 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) Weight(Less bit) External diameter Down The Hole Hammer & Bit 07

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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) Weight(Less bit) External diameter

Open the catalog to page 9

MQL5 DTH HAMMER 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.

Open the catalog to page 10

MSD6 DTH HAMMER 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.

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MD85 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) Weight(Less bit) External diameter

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rxLa*y lac/nofcyv I Down The Hole Hammer & Bit 15

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MN100 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) Weight(Less bit) External diameter

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MN125 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) Weight(Less bit) External diameter

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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 world. 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 10%...

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MBR1A DTH HAMMER Middle-Low Air Pressure DTH Hammer without foot valve Item Description Technical Date Length(Less bit) Weight(Less bit) External diameter

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Middle-Low Air Pressure DTH Hammer without foot valve Item Description Technical Date Length(Less bit) Weight(Less bit) External diameter

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rxtafiy locfrtokigy I High Air Pressure without foot valve DTH Hammers Item Description Technical Date Length(Less bit) Weight(Less bit) External diameter Down The Hole Hammer & Bit 23

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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) Weight(Less bit) External diameter

Open the catalog to page 25

MD45A 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) Weight(Less bit) External diameter

Open the catalog to page 26

Open the catalog to page 27

rxtafiy locfrtokigy I 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) Weight(Less bit) External diameter Down The Hole Hammer & Bit 27

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DTH HAMMER

DTH HAMMER

Catalog excerpts

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