b'Ball Bearing ComponentsMETRICType II ComponentSelection ChartSelecting Type II ComponentsType I Type IIaContinuous Preload Preload Partially RelievedType IIb Type IIIPreload Relieved DisengagedCaution: Be sure bushing does not strike punch holder (or in the case of demountable pins, the clamps retaining the pins)30 at minimum shut height. If this condition exists, use a shorter bushing and corresponding ball cage.'