White Paper on Bearing Seals and Shields including ZZS; ZZ; 2RS; 2RU; 2VS; TTS; Rubber Seals; Felt Seals; and Shrouded Seals.
A product table of deep groove radial ball bearings in popular metric sizes for shaft sizes from 10mm to 45mm in chrome steel. 6000-2RS. info. 28. 8. 16100.
This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to An R8-2RS bearing, for example, has an 8/16th or 1/2 inch bore.