White Paper on Bearing Seals and Shields including ZZS; ZZ; 2RS; 2RU; 2VS; TTS; Rubber Seals; Felt Seals; and Shrouded Seals.
RS provides a better seal but more rolling friction than 2Z. RS, Bearing with rubber seal on one side, one side open. 2 Z / ZZ, Bearing with a metal seal on both
Find all the bearings, bearing housings, v-belts, oil seals, collars you need and more including the 629-2RS 629-ZZ Radial Ball Bearing 9X26X8 at
A number immediately following the T identifies the total width of matched bearings, arranged back-to-back or in tandem; Polymer ball bearing with components