A PDC (Polycrystalline Diamond Compact) bit uses fixed diamond-impregnated cutters that shear through rock rather than crushing it like a Tricone/Roller cone bit does. That shearing action gives PDC bits excellent penetration rates and lower wear in medium-to-hard, non-abrasive formations, though they’re not always the best choice in very hard or highly abrasive ground.

We stock a range of PDC bit sizes to suit different borehole diameters and rig classes, from smaller pilot bores through to larger diameter applications. Tell us your target borehole size and ground type and we’ll confirm what’s available from stock.

PDC bits are the right choice for medium-to-hard, non-abrasive ground where you want strong penetration rates and lower cutter wear. In very hard or highly abrasive rock, a tricone rock bit often holds up better. If you’re unsure which drill bit for rock suits your formation, send us your ground report or drilling history and we’ll advise.

Bit life depends heavily on formation abrasiveness, rotational speed, and weight on bit, so there’s no single answer. As a guide, PDC bits in suitable non-abrasive formations can complete multiple bores before cutters show significant wear, while abrasive ground will shorten that life considerably. We can help you track wear patterns to plan replacements before a cutter failure costs you a bore.

Yes, our PDC bit range is designed to suit the thread profiles used across major HDD rig brands including Vermeer, Ditch Witch, and Goodeng. Where a direct thread match isn’t available, we can advise on a compatible adapter or cross-over sub so the bit runs correctly on your rig.