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ZRQ140A1-DHD350 high wind pressure down-the-hole drill bit
ZRQ140A1-DHD350 high wind pressure down-the-hole drill bit
 
 

ZRQ140A1-DHD350 drill bit technical parameters

Model

Edge teeth

Middle tooth

Head structure

Number of exhaust holes

Number of splines

Weight kg

With impactor

ZRQ140A1-DHD350

7-Φ18Q

7-Φ14Q

Plane

2

8

16.1

ZRC5A

ZRC5

DHD350

COP54

ZRQ140A1Z-DHD350

7-Φ18Q

7-Φ14Z

Plane

2

8

16.1

ZRQ140A1-DHD350 drill bit features

 

The ZRQ140A1-DHD350 drill bit is based on the original ZRQ140A-DHD350 drill bit based on the characteristics of domestic rock formations by our company.

 

A general-purpose drill bit developed on the above, its side teeth are made of seven 18mm alloys to ensure the wear resistance and fracture resistance of the alloy

 

The cracking performance, while the large head adopts a flat layout, which effectively ensures the adaptability of the drill bit in various working conditions, and the drill bit body picks up

 

Using a special heat treatment process, it effectively reduces the probability of damage such as breakage and chipping, so that the life of the bit body and the alloy is prolonged

 

The effective matching is achieved, which reflects the characteristics of long life and high efficiency.

 

 

 
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