What is BS EN 4540 - Spherical plain bearings about?
BS EN 4540 is a European standard on aerospace series which covers bearings, spherical plain, in corrosion resisting steel with self-lubricating liner elevated load under low oscillations.
BS EN 4540 specifies the required characteristics, inspection and test methods, qualification and acceptance conditions for spherical plain bearings in corrosion resisting steel, self aligning with self-lubricating liner designed to withstand (under load) slight swivelling and slow rotations only.
The liner may be of a fabric or composite material bonded to the inside diameter of the outer ring or in a composite material moulded into a pre-formed cavity between the inner and outer rings.
Who is BS EN 4540 - Spherical plain bearings for?
BS EN 4540 on spherical plain bearings is useful for:
- Manufacturers of aerospace equipment and components
- Spherical plain bearings manufacturers
Why should you use BS EN 4540 - Spherical plain bearings?
Spherical Plain Bearings (also known as “Spherical Plane Bearings” "Spherical Ball Bushing Bearings" and “Ball Bushings”) have an inner ring with a sphere convex outside surface and an outer ring with a correspondingly sphere, but concave inside surface.
Steel has a certain resistance against corrosion. This so-called passivity is due to a thin and invisible layer of oxides being formed on the surface. This process takes place through a reaction between the metal and the oxygen in the surrounding environment.
When it comes to the manufacturing and use of aerospace components, reliability and consistent performance are crucial. Hence BS EN 4540 walks you through the characteristics, inspection and test methods, qualification and acceptance conditions for spherical plain bearings in corrosion resisting steel. This ensures safety and reliability in your organization and in turn increases the efficiency of work.
