>> P.221
1N=0.102kgf=0.2248lbs.1mm=0.03937inchD■Accuracy■MountingNeedle Roller Bearings with Separable Cage are Mounting examples of Needle Roller Bearings with manufactured to the accuracy based on JIS (See Separable Cage are shown in Fig.1.page A31.). Tolerances for the smallest single roller When mounting Needle Roller Bearings with set bore diameter of bearings without inner ring are Separable Cage, it is necessary to locate the needle based on Table 14 on page A33.■ClearanceRadial internal clearances of Needle Roller Bearings with Separable Cage are made to the CN clearance shown in Table 18 on page A37.■FitRecommended fits for Needle Roller Bearings with Separable Cage are shown in Tables 21 to 23 on pages A41 and A42.■LubricationNeedle Roller Bearings with Separable Cage are not provided with prepacked grease. Perform proper lubrication for use. Using them without lubrication will increase the wear of the rolling contact surfaces and shorten their lives.■Oil HoleThe double-row type outer rings have both an oil hole and an oil groove, but the single-row type outer rings do not. When outer rings with an oil hole are required, attach "-OH" before the clearance symbol in the identication number, and when outer rings with both an oil hole and an oil groove are required, attach "-OG" to the same position.Example: NAF 203517 - OH C2 P6When outer rings with multiple oil holes or inner rings with oil hole(s) are required, please contact IKO.■Operating temperature rangeFor synthetic resin cages, "N" is added at the end of the identication number. The operating temperature range for Needle Roller Bearings with Separable Cage is -20〜+120˚C. However, the maximum allow-able temperature for synthetic resin cages is +110˚C, and when they are continuously operated, it is +100˚C.cage axially. The needle cage is guided by shoulders of the shaft and housing or by side plates, and their guide surfaces must be heat-treated and nished by grinding at right angles to the shaft central axis.Dimensions related to mounting are shown in the table of dimensions.Fig.1 Mounting examplesD82
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