1 Scope
This British Standard specifies requirements for the assembly of powered and non-powered
wheelsets with inboard bearings comprising elements conforming to the following standards.
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a) BS 8535 for axle design.
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b) BS EN 13261 or BS 5892‑1 for axles.
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c) BS EN 13262 or BS 5892‑3 for wheels.
NOTE Some characteristics are specified as a function of Category 1 or of Category 2.
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• Category 1 is applicable for wheelsets whose operating speed is to exceed 200 km/h.
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• Category 2 is applicable for wheelsets whose operating speed is not to exceed 200 km/h, and comprises two sub-categories:
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• Category 2a is applicable when the operating speed is to be up to and including 120 km/h;
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• Category 2b is applicable when the operating speed is to exceed 120 km/h, but is not to exceed 200 km/h.
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