Down-the-hole hammer RH460 series

Sandvik Mining has added 6- and 8-inch models to its growing RH460 DTH hammer family, designed to reduce costs, increase penetration rates and prolong service life in even more drilling applications. Sandvik Mining bolsters RH460 DTH hammer series Sandvik Mining is also introducing 4- and 5-inch RH460hp hammers, air-efficient high-pressure models designed to operate at 32-35 bar (450-500 psi). At 35 bar, RH460hp hammers consume less fuel and cost less to operate than similar hammers at the same pressure. The high-pressure hammers, an ideal match for Sandvik DR500-series rigs and the company's new Pantera, feature the same benefits as all RH460 hammers. The growing RH460 family optimizes the impact-energy transmission in variable ground conditions. Enhanced air cycle improves expansion and compression rates, producing more power while reducing air and fuel consumption. Developments in the piston design and improved lubrication capabilities dramatically increase piston and hammer life across the RH460 series. Sandvik Mining has devoted much R&D work into designing the bearing surfaces to ensure bending vibrations in the piston are eliminated.