Ubc bearing uc krrb radial insert ball bearings ubc uc 204 yar 204 gye 20 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 204yar 204gye 20 krrb 20mm radial insert ball bearing 1280