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• single-row - 617.. 618.. 628.. 638.. 619.. 160.. 60.. 630.. 161.. 62.. 622.. 632.. 63.. 623.. 633.. 64.. SCTRUCTURE Radial contact single-row and double-row ball bearings are inseparable and consist of an outer ring, an inner ring and a cage with balls. They are, above all, adapted for operation with high rotational speed and designed for transferring radial loads. Ball bearings can also normally transfer small loads, in the narrow range, in the axial direction, especially double-row bearings. They rank among most commonly used rolling bearings because of their simple construction, numerous construction variants and low prices. Ball bearings for magnetos miss one of the lips on the outer ring and that is why they are dismountable. This feature enables separate mounting of both rings. CONSTRUCTION VARIANTS Depending on needs deep-groove ball bearings can be delivered in various construction variants, e.g. with reduced or increased clearance, with higher accuracy classes or with special cages suited for operation with high rotational speed. Furthermore deep-groove ball bearings are manufactured in many construction variants, what enables substantial simplification or improvement of bearing-closed pairs used in machines and installations. The best example for this may be the application of bearings with ZZ-type steel shields or 2RS-type rubber seals or a groove in the N-type outer ring for fixing a bearing in the mounting in the longitudinal direction with the help of the R-type ring. Bearings with two steel shields or two rubber seals are filled by the manufacturer with a proper amount of plastic lubricant, that will do for the whole life of a bearing under normal operation conditions. For special uses one also manufactures bearings with a apered bore of 1:12 taper for mounting them with bearing sleeves. And in aggressive environment ball bearings made of acid resistant steel (SS designation behind the bearing’s symbol) are used. |
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