Deep groove ball bearing Surface :Polished Machined and turned SGS audited ... 1,Name: Deep groove ball bearing;Deep groove bearing;Ball bearing2,For the similar bearing,what can we do ?(1), ... Ability for the material of this kind of bearing: Grade3.6,4.6,4.8,5.6,6 ... plating Light oil,spray coating,electrophoretic coating,etc Polishing Grinding and polishing,etc,except mirror finish (3),Ability for ...