SKF 608 2ZJEM Deep Groove Ball Bearing (8-Pack) Deep-groove geometry for high speeds and supporting both radial and axial loads Single-row bearing for supporting radial loads C3 radial internal clearance for radial slack between the inner and outer rings that is greater than CN (normal) to compensate for thermal expansion Steel cage evenly spaces the balls for even load distribution and prevents contact to reduce friction, vibrations, and noise Shields on both sides of the bearing to keep lubricant in and contaminants out