Division 4.2.16 Flange lubrication
United Kingdom
To protect the rails and wheels against excessive wear, particularly in curves, the interoperable trainset shall be equipped with flange lubrication. This shall be installed and monitored according to the following provisions:
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lubrication must be assured in the curves with radius lower or equal to 1 200 m;
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after such a lubrication:
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a continuous film of lubricant is present on the active zone of the rail shoulder,
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the bearing surface wheel/rail is not polluted, so as to not degrade braking performance.
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Flange lubrication shall ensure the protection of all axles of the trainset.