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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.

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For efficient down-the-hole (dth) drilling, sandvik offers high performance drilling tools to increase your productivity and reduce your total operation cost. sandvik develops tools in close cooperation with the customers to maximize performance and optimize user experience. request a quote find an office

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