Non-standard bearings are non-standard bearings. In popular terms, they are bearings that do not meet the external dimensions specified by national standards, that is, all bearings whose external dimensions are different from national standards. Its main features are low generality, mostly for special equipment and special occasions, small batches, and trial products of new research and development equipment account for the majority; but due to its non-scale and batch production, there are not many production enterprises and high costs , The price is more expensive.
