M40-146 DTH Hammer Bit

Rock drilling tools manufacturer Bloom has a comprehensive range of DTHhammer bits with M shanks type for a various range of hole sizes, which have been designed to match all conceivable applications for water well industries, mining and construction.

Rock drill bits Shank types: M 30, M 40, M 50, M 60/65, M 380.

DTH rock drill bits hole diameter: 3", 4", 5", 6", 8"(85mm-305mm)

Convex Face

A classic design for soft to medium hard rock formation which is not so abrasive. This design have very excellent penetration rate but poor in hole deviation if rocks are hard.

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

Dome/Hemispherical Buttons

Universal buttons for all rock formation, best suited to hardest and very abrasive rock formation.

Semi-Ballistic/Parabolic Buttons

Excellent penetration rate, but only suited to medium hard and not so very abrasive rock formation.