Hole Digging Mining Button Pneumatic Rock Drill Bits for Hard Rock,ballistic button bit,Tungsten Carbide Mining Rock Drill Button Bit

Pneumatic Rock Drill Bits for Hard Rock

Tapter drill tools (short hole drill bit)– Ideal for short hole drill & blast, R.S.International taper drill button bits with hemispherical button is for high bearing capacity and abrasive resistance ,high drilling speed and low abrasive resistance.

Degree:4°,6°,7°,11°,12°

Bit diameter:20mm-45mm

Bit type:Button face, Blade face,Pilot Adapter/Reamer

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DESCRIPTION

R.S.International rock drilling tools mainly ensure transmitting impact power into rock as efficiency, accurately and economically. Our rods and bits are developed and designed to give you great versitality, higher penetration rates, lower energy consumption, straighter holes, with less deviation and longer service life.

Types and Features:

BITS:

1).Tapered system is a further development of the integral system. It features many sizes bits in diameter and different face type of bits can be used on the same rod. There are two cross sections which are 22mm and 25mm in diameter and the length up to 8000mm. And the hole sizes range from 21mm-41mm in diameter. Thread bits mainly range from 41mm to 152mm.

2).Top hammer bits can also be classified as button type and blade type.

Button bits feature bit diameter, skirt length, skirt diameter, wall thickness, gauge clearance angle, face design, and button insert types. There are two types of skirts which are retrac and straightrac. The bit faces including recessed face as well as named drop center face, flat face, chisel face and dome face. The insert button type including hemispherical button which is abrasive and suited to hard ground, ballistic button which is suited to soft ground, parabolic button as well as named semi ballistic button which is mildly abrasive ground and suited to medium ground and conical button which is best suited for smaller diameter bits and suited to all non-abrasive ground. And for number of buttons, 3-6 buttons are inserted in 33mm-45mm bits in diameter. 4-6 buttons are inserted in 45mm-51mm bits in diameter. 6-10 buttons are inserted in larger 51mm bits in diameter.

Blade bit designs two types of face, cross and X type face. Usually, cross type face ranges 32mm to 57mm bits in diameter and X type face ranges 57mm or larger diameter bits. Blade bit is the best choice for the very hard and abrasive ground because they tend to resist gauge wear better than button bits. But blade bits are not as productive as button bits and have higher drilling costs than button bits.