... 1.13 year experience, 2.Certificate ISO9001.2008, 3.Material: Bearing steel, 4.Various size and type, 5.15-30days delivery. ... a common concave sphered raceway in the outer ring. The bearing is consequently self-aligning and insensitive to angular misalignments of ... misalignment are to be expected. Additionally, the self-aligning ball bearing has the lowest friction of all rolling bearings, which enables ...