ROCKMORE Extension
Drilling Equipment

Rockmore’s bits, extension rods, couplings and shank adapters are used throughout the world for top-hammer production drilling in mining, tunneling, construction and quarry work. Our extension drilling equipment is designed to transmit the maximum impact energy to the rock with the least possible loss of energy in the drilling chain.

Rockmore offers a complete selection of extension drilling tools to meet all of your drilling needs, including button, cross and x-design bits, couplings, coupling adapters, shank rods, bit adapters, and thread adapters in a full range of standard diameters. We also offer a complete range of extension rods including male-male and male-female configurations, round and hex cross-section shapes, different lengths and different heat treatment options.

Rockmore offers a range of carbide inserts, including the new Marathon carbide insert for button bits, combining higher hardness properties with longer-lasting performance to handle extreme, abrasive rock conditions. Extensive trials showed that Marathon carbides last up to 20 percent longer than previous designs in water well and mining environments.

Download the Extension
section of our catalog (19.4MB)