This NU406MC3 bearing is a single row cylindrical roller bearing, it has no flanges on the inner ring, a machined brass cage and a larger than normal radial internal clearance. The bearing's dimensions are 30x90x23.NU406 MC3Metric, No Flange on...

This NU406W bearing is a single row cylindrical roller bearing, it has no flanges on the inner ring, a pressed steel cage and a normal radial internal clearance. The bearing's dimensions are 30x90x23.NU406 W Metric, No Flange on Inner RingHeavy30mm...

This NU406WC3 bearing is a single row cylindrical roller bearing, it has no flanges on the inner ring, a pressed steel cage and a larger than normal radial internal clearance. The bearing's dimensions are 30x90x23.NU406 WC3Metric, No Flange on Inner...