Bearing Numbers Explained. (1) Prefix *Note: Each bearing company may create their own prefixes. The example at the header shows a 6001 2RS bearing.
Suffix 2RS, 2RSH, 2RS1, LLU, DDU, 2RSR, EE Bearing with two rubber seals. Example 6205 LLU Suffix Z, ZR Bearing with one metal shield. Example 6205 ZR
White Paper on Bearing Seals and Shields including ZZS; ZZ; 2RS; 2RU; 2VS; TTS; Rubber Seals; Felt Seals; and Shrouded Seals.
Boca Bearing offers a full range of Econo-Power style Engine Replacement Bearings. (designated ZZ) or they can be purchased with two rubber seals (2RS).