Smaller seat loading pad, which is a rigid circular object 200 mm in diameter, the loading surface of which has a convex spherical curvature of 300 mm radius with a 12 mm front edge radius.
This load pad is designed specifically for BIFMA X5.1, which is a rigid rectangle object 102×50 mm in dimension ,with a 12 mm front edge radius. Mainly used to test the office chair pedal static load and durability.