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See Chinese contents: GB/T 41103-2022 GB/T 41103-2022: Rolling bearings - Ceramic cylindrical rollers - Boundary dimensions，geometrical product specifications（GPS）and tolerance values
This document specifies the dimensional and geometric properties, nominal dimensions and tolerance values of finished silicon nitride cylindrical rollers for rolling bearings. This document is applicable to the production, inspection and acceptance of ceramic cylindrical rollers for rolling bearings. Annexes A and B give the specifications and grouping principles of roller diameter and roller length respectively. Annex B also gives roller length tolerances. Annex C gives examples of roller imperfection types and inspection methods.
