As DTH bits are consumables, the maintenance of the DTH bits in daily life can extend the bits’ service life and reduce the cost. Once finishing the drilling work, we should examine the situation of the button of bits. If the buttons are worn down a lot that affect the drilling efficiency, we recommend a hand-held tool to sharpen the button.

It is a complete manual grinding system with easy and simple operation. Driven by air, its inner rotor can reach over 22000RPM that can sharpen the worn-down button in a few seconds, making grinding job efficiently.