Down the Hole (DTH) Hammer Bits - Drilling Supply
2020-11-10 · Shoulder-to-Shoulder Length 1363 mm 53.5 in Length (with bit retracted) 1490 mm 58.7 in Length (with bit extended) 1538 mm 60.6 in Hole Diameter range 216–254 mm 8.5–10.0 in Bit Shank Type QL80 Connection Thread* 4 ½ in API reg *Also available in BECO or other thread sizes OPERATING PARAMETERS Working Pressure 0.7–3.4 MPa 100–500 psi
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