Answer
May 26, 2026 - 01:36 PM
The bearing type determines how smoothly the bit follows the edge of your workpiece and can affect the final profile shape. Both the Amana Tool 54138 and Amana Tool 54136 use bottom mount ball bearing guides, which provide smooth operation and allow for the addition of optional bearings to modify the profile (such as introducing a fillet at the bottom). This flexibility means you can achieve a variety of profile styles with a single bit by simply switching the bearing, making these bits highly versatile.
