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DTH Bit

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Down the hole drilling DTH bit pneumatic drilling bits for blast hole drilling
Down the hole drilling DTH bit pneumatic drilling bits for blast hole drilling
Down the hole drilling DTH bit pneumatic drilling bits for blast hole drilling
Down the hole drilling DTH bit pneumatic drilling bits for blast hole drilling
Down the hole drilling DTH bit pneumatic drilling bits for blast hole drilling

Down the hole drilling DTH bit pneumatic drilling bits for blast hole drilling


Different name:Pneumatic DTH bits/ air bits
Main application:for mining/well drilling/quarry/rock drilling/ blast hole drilling
Core specification parameters:DHD/SD/QL/MISSION/NUMA high air pressure DTH bits
Applications:Widely used in mining, quarrying, exploration, water-well, geothermal, solar and construction/geotechnical drilling projects
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Description

A down-the-hole drill, usually called DTH, is basically a jackhammer screwed on the bottom of a drill string. The DTH hammer with bit is one of the fastest ways to drill hard rock. Driving by compressed air, the DTH hammer transforms the inner energy into the kinetic energy of the piston, and the impact energy is transmitted to the bit in the form of stress wave for rock breaking. Meanwhile, the rotational torque rotates the DTH bit to cut rock into small cuttings and dust. 

We offers a wide range of DTH bits suitable for a variety of DTH hammer. The DTH bits are usually classified into three types as below: 

Low Air Pressure DTH bits: Diameter from 65mm to 200mm for CIR90/CIR110/CIR150/CIR170 hammer 

Middle Air Pressure DTH bits: diameter from 64mm to 108mm for BR1/BR2/BR3 hammer 

High Air Pressure DTH bits 

Size: from 3.5 inch to 12 inch 

Shank: DHD/SD/QL/MISSION/NUMA 

As we have adequate stock of DHD shank DTH bits from 3.5 inch to 12 inch in stock, a quick delivery is available to meet urgent order. 

According the different shape of head, the DTH bits can be classified into flat face、convex face、drop center、Concave face bits. 

Flat Face Bit 

This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressure. Good penetration rates an resistance to steel wash. 

Convex Face Bit 

For high penetration rates in soft to medium-hard with low to medium air pressure. It is the most resistance to steel wash, and may reduce the load and wear on gauge buttons, but poor hole deviation control. 

Drop Center Bit 

For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressure. Maximum hole deviation control. 

Concave Bit 

The all-around application bit face specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity.

Specifications
Head ShapeHead Diameter(mm)Shank Length(mm)SplineButton TypeButton Size
DHD3.5Flat Face901808Spherical+Ballistic6* Ø 14+ 5* Ø 12
Flat Face951808Spherical+Ballistic6* Ø 14+ 5* Ø 12
Flat Face1001808Spherical+Ballistic6* Ø 14+ 6* Ø 12
Flat Face1081808Spherical+Ballistic8* Ø 13+ 6* Ø 12
DHD340Convex Face1082098Spherical+Ballistic7* Ø 16+ 6* Ø 14
Convex Face1152098Spherical+Ballistic7* Ø 16+ 6* Ø 14
Convex Face1272098Spherical+Ballistic8* Ø 16+ 4* Ø 14+3* Ø 13
Convex Face1302098Spherical+Ballistic8* Ø 16+ 4* Ø 14+3* Ø 13
DHD350Convex Face1402608Spherical+Ballistic7* Ø 18+ 4* Ø 15+3* Ø 14
Flat Face1462608Spherical+Ballistic8* Ø 18+ 8* Ø 14
Flat Face1522608Spherical+Ballistic8* Ø 18+ 8* Ø 14
Concave Face1652608Spherical8* Ø 18+ 4* Ø 14+4* Ø 16
Concave Face1782608Spherical8* Ø 18+ 6* Ø 16+5* Ø 14
DHD360Concave Face154308.58Domed8* Ø 18+ 4* Ø 16+4* Ø 15
Flat Face165308.58Domed8* Ø 18+ 8* Ø 16
Concave Face171308.58Domed8* Ø 18+ 6* Ø 16+4* Ø 15
Concave Face178308.58Domed8* Ø 18+ 6* Ø 16+5* Ø 15
Concave Face190308.58Domed9* Ø 18+ 6* Ø 16+5* Ø 15
Concave Face203308.58Domed10* Ø 18+ 8* Ø 16+6* Ø 15
DHD380Concave Face20335010Domed10* Ø 18+ 4* Ø 18+10* Ø 16
Concave Face21635010Domed10* Ø 18+ 4* Ø 18+10* Ø 16
Concave Face23035010Domed12* Ø 18+ 12* Ø 18+6* Ø 16
Concave Face23535010Domed12* Ø 18+ 12* Ø 18+6* Ø 16
Concave Face25435010Domed12* Ø 18+ 12* Ø 18+8* Ø 16
Convex-Concave Face27535010Domed12* Ø 18+27* Ø 16
Convex-Concave Face30535010Domed15* Ø 18+35* Ø 16
DHD1120Convex-Concave Face3054908Domed15* Ø 20+27* Ø 18+8* Ø 16
Convex-Concave Face3114908Domed15* Ø 20+27* Ø 18+8* Ø 16
Convex-Concave Face3254908Domed15* Ø 20+27* Ø 18+8* Ø 16
Convex-Concave Face3504908Domed16* Ø 20+32* Ø 18+13* Ø 16
Convex-Concave Face3814908Domed16* Ø 20+36* Ø 18+18* Ø 16
Convex-Concave Face40049088Domed16* Ø 20+40* Ø 18+28* Ø 16
Convex-Concave Face445490Domed20* Ø 20+48* Ø 18+25* Ø 16
Convex-Concave Face5004908Domed24* Ø 20+90* Ø 18
Place of Origin:Made in China
Brand Name:KIMDRILL
Model Number:DHD/SD/QL/MISSION/NUMA high air pressure DTH bits
Certification:COC/PVOC/FORM E/CO/ISO 9001
Minimum Order Quantity:1PCS
Packaging Details:Wooden cases or pallet
Delivery Time:7 working days
Competitive Advantage

High drilling efficiency

Due to its good performance of high penetration rate and minimal deviation tendency, our DTH bits have been exported to many different countries such as USA, South Africa, Ireland etc and won a good feedback.

Quality assurance

With many years experiences of production of DTH drilling tools, the DTH bits we made have long service life and high quality.

All around after-sales service

Our sales will response to any questions within 24 hours once we get. We pay great attention to the feedback from clients and satisfy them both on products and services.

warranty:

The warranty period is six months since the DTH bits are delivered

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