R32-89-15button Dome Reaming Bit

Rock drilling tools manufacturer Bloom's rock drill bits: Reaming tools made from high alloy steel and tungsten carbide as same grade as internationally well-known brand

Apply "hot (thermal) -insertion" processing procedure to insert the buttons as same as internationally well-known brand

Pilot adapter, Reamer ring.

A reaming bit functions to enlarge a borehole and it is designed with a drill portion and a reamer portion. The drill portion is formed by cutting edges at the end of a plurality of flutes, and the reamer portion includes pilot adapter a first relief formed on each flute surface disposed at a predetermined angle with respect to the flute surface to form a first reamer cutting edge.

Reaming ring of reaming tools, a second relief is formed contiguous with the first face on each reamer portion and is disposed at a second angle, less than the first angle with respect to the flute surface.