>> P.399
ITable 5 Tolerances of smallest single roller set bore diameter Fws minunit: μmFwNominal roller set bore diametermm∆Fws minDeviation of smallest single roller set bore diameter Over 610183050Incl.1018305080High+22+27+33+41+49Low+13+16+20+25+30■ClearanceRadial internal clearances of Roller Followers are based on Table 6.Table 6 Radial internal clearanceIdentification number (1) Metric seriesInch seriesunit: μmRadial internal clearanceSeparable Roller FollowersNon-separable Roller Followers 2) Cylindrical Roller Non-separable Roller FollowersFollowersMin. Max. NAST 6R NART 5RNAST 8R〜NAST12R NART 6R〜NART12R NAST15R〜NAST25R NART15R〜NART20R NAST30R〜NAST40R NART25R〜NART40R NAST45R, NAST50R NART45R, NART50R --------- ---- 5 5101015202530354520253040504550606070----------NURT15R〜NURT30-1R NURT35R〜NURT40-1R NURT45R〜NURT50-1R --CRY12R〜CRY56RCRY64RNote (1)Also applicable to the full complement type, cylindrical outer ring type, shield type and sealed type. (2)Also applicable to C-Lube Roller Followers.■Fit■Maximum allowable static loadRoller Followers are generally used under the loading The load that is applicable to Roller Followers is, in conditions in which the load direction is xed in rela-some cases, determined by the strength of the outer tion to the inner ring and rotates in relation to the ring rather than by the load rating of the needle roller outer ring. The recommended fits for shafts are bearing. Therefore, the maximum allowable load that shown in Table 7. Those for the inch series are is limited by the strength of outer ring is specied.shown in the dimension table.Table 7 Recommended fit (Metric series)Type Tolerance class of shaftSeparable Roller Followerswithout inner ringwith inner ringk5,k6Non-separable Roller Followers(1)g6,h6Cylindrical Roller FollowersNote 1)Also applicable to C-Lube Roller Followers.I86
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