SKF - 7020 ACD/HCP4ALQBCC

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, Very High Load Carrying Capacity, Relatively High Speed And Stiffness, Electrical Insulation. Applications : Machine Tool Spindles, Medical and Dental Equipment, Aerospace and Defense, Semiconductor Manufacturing. ACD= 25° Contact Angle And (E) Small Size Balls, 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, L= Annular Groove With Two Lubrication Holes And Two Annular Grooves Fitted With O-Rings In The Outer Ring For Direct Oil Lubrication, QBCC= Four Matched Single Row Deep Groove Or Angular Contact Ball Bearings Arranged Tandem - Back-To-Back, Heavy Preload.

Specifications