The bearing is the "steering wheel" of the trimming knife and is crucial.
Location: Usually located above (upper bearing blade) or below (lower bearing blade) the cutting head, but there are also options available both above and below.
Function: Guide the tool to move along the edge of the template or workpiece.
Selection: Bearings of different diameters can be replaced as needed to fine tune the cutting depth (the larger the bearing, the shallower the cutting).
