SKF - 71912 ACD/P4AQGB

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, Low Noise and Low Vibration Levels. Applications : Lathe & Milling Spindles, CNC Spindles, Aerospace & Marine Stability, Semiconductor Manufacturing, Pumps & Centrifuges, Industrial Motors & Generators, Renewable Energy Systems, Textile Machinery, Robotic Joints & Actuators. ACD= 25° Contact Angle, P4A= Dimensional Accuracy In Accordance With ISO Tolerance Class 4, Running Accuracy Better Than ISO Tolerance Class 4, QGB= Quad Set, Single Row Angular Contact Ball Bearing For Universal Matching. Two Bearings Arranged Back-To-Back Or Face-To-Face Will Have A Medium Preload.

Specifications