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140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling

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    Buy cheap 140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling from wholesalers
     
    Buy cheap 140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling from wholesalers
    • Buy cheap 140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling from wholesalers
    • Buy cheap 140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling from wholesalers
    • Buy cheap 140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling from wholesalers

    140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling

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    Brand Name : ROSCHEN
    Model Number : 2 - 36"
    Certification : ISO
    Price : Negotiate
    Supply Ability : 100000 pcs
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    140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling

    Down The Hole (DTH) Hammer Bits 140mm For Percussion Rotary Air Blast Drilling


    DTH Hammer Bits

    Roschen Hammer Bits or DTH Button Bits range in size from 2" hole diameter upwards (50.1mm) to 36” (914.4mm). Roschen always supply stocks DTH Hammers and DTH Button bits for all major DTH Hammer brands and shanks.

    When percussion or hammer drilling your choice of hammer bit is just as important as your choice of down hole hammer. DTH stands for “down the hole”. When hammer drilling, the hammer bit gets its energy from repetitive striking of a pneumatic down hole hammers piston. This hammering with slow rotation drives the hammer bit gradually through ground formations. DTH hammer bits are most commonly used in percussion rotary air blast drilling, mining blast holes, and mineral exploration and water well drilling industries.

    The cutting interface of the DTH hammer bits are loaded with high quality tungsten carbide, which is an extremely hard material. Since hammer bits work with air pressure delivered to the down hole hammer, it is important to use the recommended pressure provided when hammer drilling. Down hole hammer bits come with a wide variety of carbide styles. The sharper the point, the softer formation it is used for. The different styles of carbides on the hammer face include dome, cone and ballistic tungsten carbide inserts which are press fit into the DTH bit.

    Roschen can open up the flushing holes to provide hammer bits that can be used in reverse circulation drilling. Customized Hammer Bits, Flat Faced Hammer Bits, Convex Hammer Bits, Drop Center Hammer Bits, Concave Hammer Bits, and all kinds of exceptional custom drilling tools are offered at Roschen group limited.


    ROSCHEN DTH Bits Specifications
    Hammer SizeBits diameterShankROSCHEN CODE
    MetricInch
    1"64mm-70mm2 1/2"-2 3/4"BR1ROS 11
    2"70mm-95mm2 3/4"-3 3/4"MACH20/BR2ROS 22
    3"90mm-102mm3 1/2"-4"COP32/COP34/MACH303ROS 32
    M30/DHD3.5/BR3ROS 34
    4"105mm-152mm4 1/8"-6"COP44/DHD340/MACH44ROS 42
    SD4/M40/QL40ROS 44
    5"133mm-165mm5 1/4"-6 1/2"COP54/DHD350R/MACH50ROS 52
    SD5/M50/QL50/BR5ROS 54
    6"152mm-254mm4 1/8"-10"COP64/DHD360/SD6ROS 62
    M60/QL60/Bulroc BR6ROS 64
    8"203mm-330mm8"-13"COP84/DHD380/SD8ROS 82
    QL80/M80/M85ROS 84
    10"254mm-380mm10"-15"SD10ROS 100
    NUMA100
    12"305mm-508mm12"-20"DHD1120/SD12ROS 120
    NUMA120/NUMA125
    Notes:
    Metzke, Remet thread is available!
    Any special size of DTH bits will be available by requests.

    Advantages:

    1. Using higher grade carbides for longer life;
    2. Minimizes hole erosion in fragile formations
    3. Drills faster through soft formations with less blockages
    4. Drills straighter through consolidated and unconsolidated formations


    DTH Hammer Bits key face types:


    1. Flat Faced Hammer Bit

    These hammer bits are excellent for drilling in medium to hard formations. These hammer bits maintain average hole straightness but have an excellent penetration rate.



    2.

    Medium to hard ground formations are no problem for this DTH Hammer Bit. The DTH bit keeps average hole straightness but drills at an excellent speed.

    3.
    These DTH Hammer Bits are great for drilling through medium to hard formations. Drop Center Hammer Bits have excellent hole straightness with an average drilling rate of penetration.


    4. Concave Type Hammer Bit

    Concave Hammer bits are ideal for drilling through medium to hard formations. These DTH hammer bits are known to keep an extremely straight hole with an average rate of penetration.



    For more information, please contact:

    ROSCHEN INC.
    ROSCHEN GROUP LIMITED
    ROSCHEN HOLDINGS LIMITED

    Skype: ROSCHEN.TOOL , ROSCHEN_GROUP

    WeChat: +86-137 6419 5009 ; +86-135 8585 5390

    WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

    Email: roschen@roschen.com ; roschen@roschen.net

    Website: http://www.roschen.com ; http://www.roschen.net

    http://www.roschen.cn ; http://www.roschendrill.com

    http://www.roschenmining.com ; http://www.roschendrilling.com

    Product Tags:

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    Quality 140mm Down The Hole Drilling Bits For Percussion Rotary Air Blast Drilling for sale
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