>> P.30
Identification Number4Cage symbolThe identication number of IKO Bearings consists of a model number and supplemental codes. The descriptions of typical codes and their arrangements are shown below. There are many codes other than those described. See the section of identification number of each bearing.SymbolDescriptionsNVMade of synthetic resinNo cage or full complement5Seal or shield symbolTable 10 Arrangement of identification number of bearingSymbolDescriptionsModel numberModel codeBoundary dimensionsSupplemental codeMaterial symbolCage symbolShield symbolSeal symbol, Bearing ring shape symbolClearance symbolClassification symbol123456781Model codeThe model code represents the bearing series. The features of each bearing series are shown on pages A5 to A15.2Boundary dimensionsOne of the following four kinds of presentation meth-ZZZUUUS(1)2RSWith dust coverWith shields on both sidesWith a seal on one sideWith seals on both sidesWith ThrustDisk SealsWith seals on both sidesNote(1) hrustDisk Seals are embedded on both sides.6Bearing ring shape symbolSymbolNROH(1)JDescriptionsWith stop ring on outer surface of outer ringWith oil hole in bearing ringNo oil holeNote(1) his differs depending on the type of bearing. See the ods is used for showing boundary dimensions in the section of each bearing.identification number, which vary depending on the bearing series. Table 11 shows the presentation methods of boundary dimensions for each model code.(a)Dimension series + Bore diameter number(b) Bore diameter or roller set bore diameter + Outside diameter or roller set outside diameter + Width (c)Bore diameter or roller set bore diameter + Width(d)Basic diameter3Material symbolSymbolType of materialFStainless steel for bearing rings and rolling elements7Clearance symbolSymbolC2(None)C3C4C5T1C1C2DescriptionsC2 clearanceCN clearanceC3 clearanceC4 clearanceC5 clearanceSpecial radial clearance(Applicable to Crossed Roller Bearings)A27
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