... and high temperature 3.best service 4.high precision Miniature Ball Bearing1. Basic Feature: 1) Shield / closure: OPEN, Z, ... , C5 5) Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic 6) Retainer: PTFE, Nylon, PEEK or Stainless Steel 7) Bore Size: From ... for more than 5 years.Specilized productdeep groove ball bearing,angular contact ball bearing,spherical roller bearing,taper roller bearing and ...