Eccentric Overburden Drilling System

For smaller hole sizes, Bulroc produces the ODS "Eccentric" Overburden Drilling System, starting with the ODS 90 to suit 114mm O/D casings. This two-piece system comprises the Shanked Bit Holder and the Eccentric Bit that is secured in the Bit Holder by a double Seeloc Pin. This is easily removed to allow for Bit re-sharpening or replacement. Bulroc Overburden drilling systems are widely used in a variety of applications from Well Drilling and Mini Piling to Rock Anchoring and Site Investigation.

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