Page 28 of Heim Rod Ends and Sphericals by RBC Bearings

technical data static radial load the maximum static radial load permissible for a rod end depends on three factors race material compressive strength rod end head strength and shank strength the maximum static radial load is determined by taking the lowest of the three following values material stress table material brass aluminum bronze 300 series stainless steel low carbon steel alloy steel allowable stress psi 30,000 35,000 35,000 52,000 140,000 rod ends · race material compressive strengths r r=exhxx · rod end head strength t insert construction t [d e .176 h xhxx cartridge type construction h d2 h2 d2 x sin-1 h o.d of bearing x h x x t1 2 2 d h expressed in radians angle of d misalignment the angle of misalignment in a rod end is controlled by the outside diameter of the head the maximum degree of misalignment is obtained when the head contacts the side of the fork or clevis in which it is mounted maximum misalignment is calculated by the following formula · shank strength s · rod end angle w sin-1 d ­ sin-1h d where d head diameter or diameter of outer race h housing width w ball width spherical bearings male threaded rod end s root diameter of thread2 x .78 n2 x .78 x x female threaded rod end s1 j2 x .78 major diameter of thread2 x .78 x x where e ball diameter h housing width x allowable stress see table d head diameter n diameter of drilled hole in shank of male rod ends j shank diameter of female rod end sleeve bearings static axial load the maximum available axial load for a rod end is determined by the following formula this formula does not take into consideration bending of the shank due to a moment of force also this formula does not consider the strength of the stake in cartridge type of construction ball bearings · axial strength a a .78 e .176 h2 ­ e2 x x where x allowable stress see table e ball diameter h housing width 26

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