Core Drilling Accessories

The small parts that keep a coring rig working: barrel extensions for deep holes, thread adapters that let a 1-1/4 in-7 bit run on a 5/8 in-11 motor, and shaft couplings for spindle conversions.

Matching the thread correctly protects both the bit and the drill motor — a cross-threaded connection is the most common cause of a stuck or wobbling core bit. If you are unsure which adapter your machine needs, send us the model and we will confirm it.