BS EN 1337-7 is the seventh part of the BS EN 1337 multi-series that discusses structural bearings.
BS EN 1337-7 deals with the requirements for the design and manufacture of spherical and cylindrical PTFE bearings.
Note1: The requirements and properties of the curved sliding surfaces are included in BS EN 1337-2.
Note2: Spherical and cylindrical bearings with an included angle 2 q > 60° and 2 q > 75° respectively are beyond the scope of BS EN 1337-7.
BS EN 1337-7 on spherical and cylindrical PTFE bearings is useful for:
Cylindrical PTFE bearings should permit rotational movements about one axis, and spherical PTFE bearings about any axis. They should be capable of transferring specified forces between superstructure and substructure.
BS EN 1337-7 provides you with functional, material, and design requirements for spherical and cylindrical PTFE bearings. BS EN 1337-7 also provides you with test methods to verify that the bearings meet these requirements. BS EN 1337-7 provides you with dimension tolerances for these bearings which can help you reduce production and project costs without compromising on the quality of spherical and cylindrical PTFE bearings.
Overall, the guidelines of BS EN 1337-7 enable you to produce or incorporate quality spherical and cylindrical PTFE bearings with high load-bearing and frictional resistance capacities for bridge-building projects.EN 1337-7:2004