Ubc bearing uc krrb radial insert ball bearings ubc uc 206 yar 206 gye 30 krrb these uc radial insert ball bearings from ubc are particularly easy to mount they are positioned on the shaft and fixed with grub screws in the inner ring ubc bearing uc 206yar 206gye 30 krrb 30mm radial insert ball bearing 1950