Description

Angular contact ball bearings are capable of taking radial loads and also axial loads in one direction. Four contact angles of *5º, *5º, *0º and *0º are available. The larger the contact angle, the higher the axial load capacity. For high speed operation, however, the smaller contact angles are preferred. Usually, two bearings are used in duplex pairs, and the clearance between them must be adjusted properly.
Pressed steel cages are commonly used, however, for high precision bearings, polyamide resign cages are often used.
Double row angular contact ball bearings correspond in function to two single-row angular contact ball bearings arranged back-to-back. The double row bearings can also accommodate axial loads in both directions as well as tilting moments but are narrower.
Two designs of double row angular contact bearings are available, one with a one piece inner ring and the other with a split inner ring. The bearings with split inner rings are designed to take up heavy axial loads in both directions.
As single row angular contact ball bearings can only support axial load in single direction, matched bearing mounting is often adopted to them.
☞ The main purposes:
Single row: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, the differential pinion shaft.
Double row: oil pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery.
Four-point contact ball bearings: aircraft jet engines, gas turbine.