NSK 6216 1. Chrome steel/GCr15/ceramic/stainless steel 2. ISO9001-2000 3.:P0 ... EOM is accepted. NSK 62161. Chrome steel/GCr15/ceramic/stainless steel2. ISO9001-20003.:P0,P6,P5.P4,P04. ... bearings,Self-aligning ball bearings,Taper roller bearings,Needle roller bearings,Spherical roller bearings, Excvavtor bearing,Tensioner bearings,Engine bearing bush, Forklift bearings,Crane bearings and other bearings ...