Flutes Cutting Diameter (A) Shank Diameter Cutting Length (C) of Bearings Replacement Bearings Part Number 2 3/8″ 1/4″ 1/2″ 1 12-145 or 12-307 14-118 2 3/8″ 1/4″ 1/2″ 2 12-145 or 12-307 14-118A 2 3/8″ 1/4″ 1″ 1 12-145 or 12-307 14-123 2 1/2″ 1/4″ 1/2″ 1 12-145 or 12-307 14-128 2 1/2″ 1/4″ 1/2″ 2 12-145 or 12-307 14-128A 2 1/2″ 1/4″ 1″ 1 12-145 or 12-307 14-133 2 1/2″ 1/2″ 1/2″ 1 12-145 or 12-307 14-143 2 1/2″ 1/2″ 1/2″ 2 12-145 or 12-307 14-143A 2 1/2″ 1/2″ 1″ 1 12-145 or 12-307 14-148 3 1/2″ 1/4″ 1/2″ 1 12-145 or 12-307 14-173 3 1/2″ 1/4″ 1/2″ 2 12-145 or 12-307 14-173A 3 1/2″ 1/2″ 1/2″ 1 12-145 or 12-307 14-183 3 1/2″ 1/2″ 1/2″ 2 12-145 or 12-307 14-183A 2 1/2″ V-Groove 1/4″ 1″ 1 12-145 or 12-307 14-603








