VISTA is one of the best stepped-shaft type plummer blocks manufacturers and suppliers. With stepped-shaft type plummer blocks for sale, you are able to buy cheap products directly through our website.SN2C and SN3C are the types that the bore diameter of one side is smaller than that of SNa2 and SN3 respectively, and they are provided for in JIS B 1551. For these types, a bearing is mounted with the use of a nut and washer.