Single-row angular contact ball bearing with light preload for universal matching, supporting moderate one-directional thrust loads, and combined loads where thrust load is predominant Ball contact angle of 40 degrees relative to the inner and outer raceways increases thrust load capacity Open configuration for lubrication applied in place Fabric reinforced phenolic resin cage evenly spaces balls for reduced friction, vibration, and noise ABEC 1 tolerance ratings for accuracy and low rotational speeds