SKF - 7020 ACB/HCP4AQBCA

Details

These sets of four matched super-precision angular contact ball bearings are available as universally matchable bearings or in preconfigured arrangements. Sets of four bearings arranged in tandem need to be mounted against a single bearing, or a set of bearings in tandem, to achieve the desired preload. All the other arrangements are available in different preload classes and correct mounting results in preload within a predetermined range, without the need for shims or similar devices. The bore and outside diameters of the bearings are matched to within a maximum of one-third of the permitted diameter tolerance, to provide better load distribution than single universally matchable bearings.  Features are: Very High Running Accuracy, High Axial and Radial Stiffness, High Load Carrying Capacity, Low Heat Generation, Rigidity and Stability, Reduced Friction Torque, Low Vibration Levels. Applications : Machine Tool Spindles, Pumps and Compressors, Semiconductor Manufacturing, Printing Machinery, Aerospace and Defense, Medical and Dental Equipment. ACB= 25° Contact Angle,  HC= Bearing Or Bearing Components Of Ceramic, P4A= Dimensional Accuracy In Accordance With ISO Tolerance Class 4, Running Accuracy Better Than ISO Tolerance Class 4, QBCA= Four Matched Single Row Deep Groove Or Angular Contact Ball Bearings Arranged Tandem - Back-To-Back, Light Preload.

Specifications