SKF - 71808 CD/P4QBTM | Angular Contact Ball bearing Spindle | 40 × 52 × 28 mm

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. Material : Constructed from high-quality bearing steel with a one-piece inner and outer ring and a plastic cage. Features are : Very High Running Accuracy, Very High Load Carrying Capacity, Low Heat Generation, Extended Service Life, Axial Stiffness, Non-Separable Design. Applications : Machine Tool, Semiconductor Production, Textile Machinery, Medical & Laboratory Technology. CD= 15° Contact Angle, P4= Dimensional & Running Accuracy To ISO Tolerance Class 4 (More Accurate Than P5)-Abec.7, QBTM= Four Bearings Arranged Back-To-Back And Tandem, Medium Preload.

Specifications