6900 Series Bearing
-Ratio of inner diameter to outer diameter: Compared with standard series with the same inner diameter (such as 62 and 63 series), the outer diameter is larger, and some models have increased width, forming a “wide body” structure and significantly improving rigidity.
-Thin walled design: Some 69 series (such as 6900, 6905) adopt ultra-thin wall thickness (similar to 688 series), suitable for scenarios with extremely limited axial space (such as micro machinery or precision instruments).