WH4” – DTH HAMMER TECHNICAL BROCHURE 01/06/2018 WELL DRILLING HAMMER (pat.pend.) . Minimized fuel consumption . Optimized air flow . Robust des

Technical Specification Robif WH4 Valveless Hammer 110 mm (4%") - 127 mm (5") dia. Holes The new highly dependable Robit WH4" hammer is designed for drilling 110 mm - 127 mm (4%" to 5") diameter holes. The simple yet rugged design minimises the amount of components and overall length for ease of maintenance. For optimum performance the WH4" is most effective at medium to high air pressures ranging up to 35 bar (508 psi). It comes with industry standard 2%" api reg. pin backhead and TD40 bit shank fitting. Component parts Air consumption Hammer specification Outside diameter -4-4- Imperial Metric...