... ball bearing Surface :Polished Machined and turned SGS audited More than 20 years experience in special fastener 1,Name: Deep groove ball bearing ... ;Deep groove bearing;Ball bearing2,For the similar bearing,what can we do ?(1), Ability ... of bearing: Grade3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9 ... ,especially the cutting/turning parts. Deep groove ball bearing