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
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
10 Jan 2011 The turbo bearing system plays a key role ensuring that wheels keep into the journal bearing, as in the case of the one piece “Z-Bearing”.
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.
17 май 2016 Подшипник скольжения (sleeve bearing), Простейший тип Подшипник скольжения c винтовой нарезкой(rifle bearing, Z-Axis bearing)