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Rockmore · Top hammer bits

Rockmore T51 Drop Centre Xtrac Bits

Part no.

T51-89BRTDC-3988

Drop centre Xtrac bits for T51 drill strings. A drop centre drills straighter holes in medium to hard rock. Xtrac bodies are tapered retrac bodies with flat spline grooves. Diameters 3-1/2 in (89 mm) and 4 in (102 mm). Hemispherical or semi-ballistic carbide.

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Dimension drawing: Rockmore T51 Drop Centre Xtrac Bits Thread T51 (female). Diameter 3-1/2 in (89 mm). Ø 3-1/2 in (89 mm) T51
ThreadT51
Diameter3-1/2 in (89 mm)
FaceDrop centre, Xtrac
CarbideHemispherical
Button layoutgauge 8 × 1/2 in, front 4 × 1/2 in
OEM catalogue numberA16109

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