INA AXK5578 Thrust Needle Bearing Axial Cage and Roller Steel Cage Open End Metric 55mm ID 78mm OD 3mm Width 42lbf Static Load Capacity 8.50lbf Dynamic Load Capacity

Roller 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 roller 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. INA manufactures bearings for automotive and industrial applications. The company, founded in 1946 in Germany, meets International Organization for Standardization (ISO) standards 9001:2008 and TS 16949:2009.