... :2008 5.Delivery in time Manufacture of Self-aligning ball bearing also supply taper roller bearing,spherical roller bearing,cylindrical roller bearing,thrust bearing and angular contact ball bearings1. Product range ... -6220 ,6300-6320 ,6403-6413 3) Material: Gcr15 (Chrome steel) -china, (AISI) 52100-American, (Din) 100Cr6 -Germany, carbon steel, iron. 4 ...