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ZRQ90-CIR90 low wind pressure down-the-hole drill bit
ZRQ90-CIR90 low wind pressure down-the-hole drill bit
 
 

ZRQ90-CIR90 series drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ90

6-Φ14Z

2-Φ12Z

Convex surface

2

6

3.9

 ZRC3.5-CIR90

 ZRC3.5A-CIR90

2-Φ13Z

ZRQ90B

6-Φ14Z(H)

2-Φ12Z

Convex surface

2

6

3.9

2-Φ13Z

ZRQ90C

6-Φ14Z(H)

2-Φ12Z

Convex surface

2

6

3.9

2-Φ13Z

Model features:

 

ZRQ90 drill bit is a conventional low wind pressure 90 drill bit.

 

 

ZRQ90B uses a more wear-resistant alloy on the basis of conventional drill bits.

 

 

ZRQ90C drill bits not only use better alloys, but also take targeted improvements in the bit body and heat treatment process.

 

The wear resistance and service life of the product are improved, and the probability of abnormal damage of the drill bit is greatly reduced. It is especially suitable for

 

ZRC3.5A-CIR90 fast impactor.

 

 
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