7000C series, 7000AC series, 7000B series
These bearings can carry both radial and axial loads at the same time, with high rotational speed. The bigger the contact angles, the greater capacity for axial load-carrying. One-row angular contact ball bearings can only stand axial load in one direction, and when they carry radial loads, there will be extra force in the axial direction. They can only limit the axial move of eighter the shaft or the shell in one direction. If two bearings are combined together in face-to-face or back-to-back arrangements, the extra axial force can be avoided, and they can limit the move of either axle or shell within the axial clearance ranges in two directions. Class: P5 and higher