CIR90 Low Air Pressure DTH Drilling Tools for Construction

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CIR90 Low Air Pressure DTH Drilling Tools for Construction


DTH bit is our main product. After many years searched, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.
1.high and low air pressure down-the-hole drill bits 
2.Low air pressure hole Dia.:65-220mm  
3.Face type: drop center / concave / convex / double gauge / flat  

CIR90 DTH BUTTON BIT
Technical Data:
CIR series low air pressure DTH bits:

TypeDia.Spline No.Weight (Kg)
CIR656862.5
CIR707663.4
CIR808363.45
CIR80X8363.5
CIR909063.5
CIR9010064.5
CIR9013069.5
CIR11011066.4
CIR11012368.5
CIR110W11066.5
CIR110W12368.8
CIR150155612
CIR150A155612.5
CIR150A165614
CIR170175615.5
CIR170A185616
CIR200W200648

 
J series low air pressure DTH bits:

TypeDia.Spline No.Weight (Kg)
J60C6542.26
J70C7542.8
J80B8543.2
J80B9044.8
J100B11045.04
J100B11545.5
J100B12046.25
J150B155414
J150B160415.5
J150B165422
J170B170424.5
J170B180428.6
J200B210443.5
J200B220445

 
----Selection of DTH BIT FACE SHAPE AND CARBIDE BUTTON SHAPE---- 
 
A: Bit face shape selection


DropCenter Bit
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 for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.


Bestlink Factory

Xiamen Bestlink Factory Co., Ltd  is  committed  to  provide  the  best  drilling  and  cutting machine,  tools and accessories products in marble and granite stone quarrying,  as well as in civil engineering application, especial demolition project. it is now a leading manufacturer of cutting and drilling equipment for the extraction of marble, granite  and ornamental stones in china.  

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