BS AU 1c is a European Standard. BS AU 1c guidelines consist of specifications for wheel king- pin dimensions for semi-trailers.
BS AU 1c specifies the dimensions of the 50 fifth wheel coupling pin which is used for coupling semi-trailers to prime movers, considering the limitations of weight generally laid down by official requirements.
NOTE: If, for extra heavy-duty vehicles, this coupling pin is not sufficient, a 90 fifth wheel coupling pin according to ISO 4086 shall be used.
BS AU 1c on specifications for wheel kingpin dimensions is useful for:
Heavy load commercial trailers and trucks require strong wheel kingpins to hold the tire together. It is crucial to keep the dimension of the king pin right.
BS AU 1c guidelines help the manufacturers of the vehicles to get the kingpin dimension right for smooth functioning of vehicle tyres.
BS AU helps the passengers, and truck owners to travel safely ensuring better wheel mechanisms with superior quality of king pins.