HammerHead

摘要

The Roughneck R400 Pneumatic Rock Hammer system for the underground construction industry includes the R400 air hammer, 5.25-inch straight and offset bits, patent-pending pullback kit, control station/oiler, drill conversion kit, and a universal HD high-flow rock drill housing. The system is designed to drill at rates up to 150 feet per hour and allows a directional drill to work in almost any rock condition without changing out the housing, HammerHead says. The housing supports the rock hammer by increasing the air distributed to the internal piston, and its larger housing bore diameter helps it deliver a harder blow at faster impact. Integrated face-cleaning exhaust ports help prevent plugging of the hammer, and the check valve, located within the bit, eliminates ingestion of debris.