MISSION40 DTH Button Bit, we called M40 DTH BITS & M40 DTH HAMMER BITS & M40 BIT, this is the series from RH510R sandvik with 4 inch hammer bit.

Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the inquired hardness, 

given surface compression for fatigue resistance , and fitted with precision buttons manufactured in-house.

STAROCKDRILL has a comprehensive range of DTH drill bits to match all conceivable applications.

Four basic designs are available: Convex, Flat front, Speed Bit, and Concave Bit. These are designed for specific application for all rock types, hardness's and conditions.

Advantages:

1. Out of the trouble of foot valve fracture and expansion and contraction.

2. lower energy consumption and higher impact frequency. 

The drilling speed is 15%-30% higher than the one with foot valve.

3. Simple structure, reliable parts, long life, easy and cheap maintenance.

4. Lower air and oil consumption. The oil consumption is about 10% lower than the one with foot valve.

How to order:

DTH BITS: BIT SHANK + DIAMETER 

(We are customizing customer on bit face and button shape)