3-1/16” OD x 1-1/4” Bore Ball Bearing Rub Collar

Description

The AC113A is a ball bearing rub collar — 3-1/16-inch outer diameter, 1-1/4-inch bore — for 1-1/4-inch bore shaper spindles. Positioned between the AC113 (3-inch OD) and AC114 (3-1/4-inch OD), the AC113A provides a 1/16-inch diameter increment for fine-tuning the cutting depth when the standard steps between full-diameter collars are too coarse for the application. This close sizing between collar ODs is useful in template-routing and pattern work where precise depth control at the guide surface matters. For the standard 3-inch OD, see AC113. For 3-1/4-inch, see AC114.