According to IS 6458:1972, Double Row Cylindrical roller bearings are required to be BIS Certified. The Indian Standard is worked out to characterize depths of boundary, dimensional series, and designation system of the double row cylindrical roller bearings which are to be used to support heavy radial loads at high rigidity. The standard stipulates the major dimensions, tolerance classes and the dimensional accuracy requirement in order to provide exchangeability and a consistent performance over a broad spectrum of industrial applications.
IS 6458:1972 focuses on accuracy in dimension control and installation to ensure that it fits well in shafts and housings to provide balance in the distribution of loads, stability in operation and long life. The specification guarantees compatibility between bearings produced by other manufacturers and reliable operation in harsh operating environments, both heavy-duty and high-speed. The standardization of critical design characteristics also makes the specification effective in operating in hostile environments. A set of requirements is also prescribed in the standard that associates with marking, identification and verification of dimensions to ensure traceability and conformity.
BIS certification in IS 6458:1972 is an assurance that manufacturers, OEMs and end users that double row cylindrical roller bearings meet the stipulated national standards in terms of dimensional consistency, structural integrity and reliability in performance. Compliance is guaranteed to be used reliably in machine tools, rolling mills, industrial machine, and heavy engineering equipment where radial load capacity and tight alignment is required.
