BS EN 4854-3:2019 pdf free.Aerospace series – Bearing, spherical plain, in corrosion resisting steel with self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low oscillations at different operating conditions.
3 Terms and definitions For the purposes of this document, the terms and definitions given in TR 4475 and the following apply. No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: -ISO Online browsing platform: available at http:/ /www.iso.org/obp -IEC Electropedia: available at http://www .electropedia.org/ 3.1 self-lubricated spherical plain bearing, self-aligning in corrosion resistant steel with and without staking groove bearing consisting of two concentric rings, between which is interposed a self-lubricating liner which is bonded or moulded on the spherical surface of the outer ring (race) Note 1 to entry: The width of the inner ring (ball) is greater than the width of the outer ring (race), so that a tilting movement is possible in addition to the rotational movement. Note 2 to entry: The outer ring (race] has no assembly slot but may have staking grooves for mechanical swaging.permissible [imit] static radial load Cs load corresponding to a permissible unit pressure multiplied by the effective projected area in the radial direction, the inner ring (ball) being able to take any position within the limits of the tilting angle indicated in the product standard Note 1 to entry: The direction of the load remains in the centre plane of the outer ring (race). Note 2 to entry: The definition for the effective projected area in radial direction is given by following simplified calculation:dynamic radial load oscillatory duty cycles load which may be withstood by a bearing submitted to an oscillatory movement for a defined number and rate of oscillation cycles without the dimensional or other characteristics deviating from the values permitted by this technical specification Note 1 to entry: The number and rate of oscillation cycles to be considered for this technical specification are defined in Annex B 3.8 ultimate static load load defined as being the highest load that a product can accept without fractures and cracks; the ultimate static load is equivalent to the permissible (limit) static load (radial or axial) multiplied by 1,5 . 3.9 duty cycle series of oscillating cycles under constant or varying load applied to a bearing.BS EN 4854-3 pdf download.