NSK BL311NR Ball Bearing, Single Row, Maximum Capacity, Open, Pressed Steel Cage, Metric, Snap Ring, 55mm Bore, 120mm OD, 29mm Width, 5600rpm Maximum Rotational Speed, 61500N Static Load Capacity, 75000N Dynamic Load Capacity

The NSK single-row, ball bearing has symmetric races to support high radial and low axial loads. Its deep grooves make it capable of supporting heavier loads than standard grooves and keeping balls stable for high speeds, and as a maximum type ball bearing, it uses more bearing balls in the grooves than do standard capacity bearings for applications with high radial loads and low axial loads. Its steel cage evenly spaces the rollers for even load distribution and prevents contact to reduce friction, vibrations, and noise. It has an open configuration for lubrication in place and applications involving negligible exposure to dirt, grime, debris, and other contaminants. This radial ball bearing is suitable for use in general purpose applications that primarily involve radial loads and minimal axial loads at relatively high rotational speeds. These include transmissions, motors, and pumps, among others.Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. All rolling bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. The shield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.NSK manufactures ball and roller bearings, linear guides, and other components for automotive and industrial applications. The company, founded in 1916 in Japan, has offices in Ann Arbor, MI.

• Axially symmetric races to support radial loads while maintaining high speeds and rotational accuracy
• Deep grooves support heavier loads than standard grooves and keep balls stable at high speeds
• Maximum type ball bearing uses more bearing balls in the grooves than standard capacity type ball bearings for applications with high radial loads and low axial loads
• Pressed steel cage evenly spaces the rollers for even load distribution and prevents contact to reduce friction, vibrations, and noise
• Open bearing for lubrication in place and for use in applications with little exposure to dirt, grime, debris, and other contaminants