... : ABEC-1, 3, 5, Z1V1 Z2V2 Z3V3, EMQ5.Material: Chrome steel, stainless steel,Carbon steel6.Quality standard: ISO9001: ... 2000 standard7.Cage material: Nylon steel brass8.Application: Auto, tractor, machine tool, ... contact us if you have special technical remarks on material,dimension,seal type,clearance,precision,lubrication and so on.China ...