White Paper on Bearing Seals and Shields including ZZS; ZZ; 2RS; 2RU; 2VS; TTS; Rubber Seals; Felt Seals; and Shrouded The code for a single shield is Z.
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
Example 6205 LU Suffix 2RS, 2RSH, 2RS1, LLU, DDU, 2RSR, EE Bearing with two rubber seals. Example 6205 LLU Suffix Z, ZR Bearing with one metal shield.
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
Figure 2: Split single and double row FAG cylindrical roller bearings for drive shafts. Load limit. The load kN. Z-533705.ZL. 1. 112. 279,4. 430. 203,4. 110. 1 460. 2 600. Z-541234.ZL. 2. 111. 350. 470. 240 F-804300.ZL. 2. 307. 600. 735.