Rotary drilling a concrete block with a 6″ pdc bit

Polycrystalline diamond compact (PDC) drill bits have proven to be economical.
Many contractors have expressed concerns over reduced drill pipe life when using the PDC bits on rotary because of the higher rotating speeds and higher bit torque.

The solidity and strength of PDC bits lends them many advantages that a tricone bit can’t match.
On PDC bits, unlike the tricone bit, there is no movement relative to the bit head. PDC bits shear rock with diamond faced pdc cutters affixed to tungsten carbide.

Most significantly, PDC bits have a longer lifespan which means they don’t need to be replaced as often as tricone bits.

6″1/2 New PDC drill bit
6″1/2 New PDC drill bit

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