button bit dth hammer maker

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As a rule of thumb, the smallest hole diameter a dth hammer can drill is its nominal size. i.e. standard 102 mm (4”) hammer will drill a hole down to a minimum diameter of 102 mm (4”). the limiting factor is the outside diameter of the hammer, because as the hole diameter reduces due to diameter wear of the bit, airflow is restricted.

10 2 inches dth hammer button bits shank style diameter in mm flushing holes no. gauge buttons face buttons approx. weight part number br 2 76 2 6 x 13mm 3 x 13mm 3.6 kgs br2-76 80 2 6 x 14mm 3 x 13mm 4.0 kgs br2-80 90 2 6 x 14mm 5 x 12mm 4.2 kgs br3-90 3 inches dth hammer button bits shank style diameter in mm flushing holes no.

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