Axially symmetric races to support radial loads while maintaining high speeds and rotational accuracy Straight bore fits conventional cylindrical shafts C2 radial internal clearance for radial slack between the inner and outer rings is less than CN (normal) for more precise performance, reduced radial play, and accompanying wear Steel cage evenly spaces the rollers for even load distribution and prevents contact to reduce friction, vibrations, and noise Three lubrication holes in the outer ring for lubrication in place