NKE Hauptkatalog / General Catalogue 2011

DesignationSystemb) Bearing having bore diameters less than 10mm and over 500 mm.For such bearings their bore diameter will be givendirectly in millimetres. It is separated from thesymbol of bearing series by an oblique slanting line.Examples:62/2,5 Single row deep grooveball bearingbore diameter230/710 Spherical roller bearingbore diameter618/850 Single row deep grooveball bearingbore diameter2,5mm710mm850mmc) Bearings having bore diameters thatdeviate from standard sizes.Such bore diameters are also indicated directlyin millimetres, separated from the bearing basesymbol using an oblique slanting line.This also applies to bearings having borediameters of 22, 28 and 32 mm.For other bearings the principle has already beenestablished in identifying the bore size in a directuncoded manner following the identificationsymbol of the bearing series.Examples:320/22 Tapered roller bearingbore diameter608 Single row deep grooveball bearingbore diameter62/32 Single row deep grooveball bearingbore diameter22mm8mm32mmd) Certain bearing seriesFor Magneto bearings of the series E, BO, L andM the bore diameter is given directly in millimetres.Example:E17Magneto bearingBore diameter 17mmSuffixesSuffixes are written following the bearings basedesignation.They give some information regarding detailsof bearing design, as far as it deviates from thedefi ned standard.Suffixes must always be considered in relationto the bearing type used. As an example, theletter “E” will have a completely different meaningaccording to its bearing type.Not all suffixes are standardised. Many details,such as details of cage or seals are definedaccording to the manufacturers’ standards.The following features which may deviate fromthe standard design will have defined and differingsuffi xes- Internal design- Outer shape or profile- Seals and shields- Design and material of cage- Tolerances and accuracy- Clearance- Heat treatment- Grease filling127 Self aligning ball bearingbore diameter7mmwww.nke.at 217