Today, roller bearing mechanisms are used in thousands of industrial, automotive, marine and aerospace applications. Whether cylindrical, spherical, gear, tapered or needle, roller bearings work to reduce rotational friction to support radial and axial loads (see Figure 1). Figure 1. Bearing shapes: a) deep groove ball bearing, b) angular contact ball bearing, c) self-aligning ball bearing, d) cylindrical roller bearing , e) tapered roller bearing , f) spherical roller bearing, g) needle roller bearing, h) thrust ball bearing. Lubrication is critical to roller bearing life Roller bearing failure has the potential to shut down running equipment and possibly entire plant operations. Roller bearings require lubrication to reduce the metal-to-metal friction between the rolling and sliding contact areas. Letting lubrication-related tasks lapse can ultimately mean catastrophic equipment failure. Lubricating helps disperse heat from the bearing, remove wear particles and contaminants