A spacer for use in taper roller or angular contact bearings which is used to apply predetermined preload on stationary raceways that are relatively insensitive to machining inaccuracies or end play is disclosed. The spacer has a central segment which buckles in so as to limit the maximum load that the spacer can apply. The contact bearing (1) arrangement comprises of two spacers, a hollow cylindrical inner spacer (3) and an outer spacer (4), wherein a width of the inner spacer (3) dictates the length change in outer spacer; a thin central segment (5) with a specific radius is placed in the outer spacer, such that when the outer spacer is subjected to uni-axial compression along its axis, the outer spacer initially offers a force-displacement response; and when a critical load is reached the thin central segment buckle and results in a sharp knee in spacer in the force-displacement response.
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