Caterpillar has released its first down-the-hole (DTH) hammers and bits, designed for the most severe blasthole drilling applications, while also being cost-effective for a wide range of drilling needs.
The new Cat DTH hammer has a valved design that provides reliable operation, low air consumption, easier maintenance and cost-effective rebuild. The piston design also delivers long life and efficient energy transfer.
The hammer is rated to run with compressed air systems driving working pressures up to 34.5 bar (500 psi), generating faster penetration rates in the hardest of materials.
Several different configurations of bits for DTH drilling are available in both standard and heavy-duty versions to allow matching the bit to the rock characteristics and job requirements.
The bit selections include a variety of carbide shapes (spherical, ballistic) and face shapes (concave, flat, convex).
Cat bits are optimisedfor high wear resistance and improved rock chipping. The aggressive, long-lasting cutting structure in conjunction with the efficient Cat DTH Hammer delivers a superior rate of penetration.
The advanced materials and heat treatment technology used in the DTH products yield longer life and result in lower overall drilling costs in demanding conditions.
In head-to-head tests conducted in iron ore and quarry applications, Cat DTH hammers and bits demonstrated lower total cost of drilling.