1.1 This standard prescribes the requirements and the methods of test for machinery and spindle oils for various types of lubricating services to which these oils are employed. It does not cover oils compounded with fixed oils or soaps.
1.2 This standard is not intended to cover oils containing additives but such oils are not precluded.
IS 493-1958 history
1958IS 493-1958 Machinery and spindle oil specifications