Description
The AC107 is a ball bearing rub collar — 1-11/16-inch outer diameter, 3/4-inch bore, 7/16-inch thick — for 3/4-inch bore shaper spindles. At 1-11/16 inches OD, the AC107 is 1/16 inch larger in diameter than the AC106 (1-5/8-inch OD), allowing a slightly shallower cut depth when swapping from the smaller collar — useful when the setup calls for a precise depth adjustment without moving the fence. Ball bearing rub collars ride against the starting pin, fence, or template guide to set the cutter’s working depth. The precision bearing keeps the collar surface stationary while the cutter spins above it. For the smaller 1-5/8-inch OD in the same bore, see AC106. For larger OD collars in the 3/4-inch bore series, see AC108, AC109, and AC109A.

