Page 179 - needle bearings
P. 179

Inner rings
                                                                                                          NTN


        Type IR






















         d 5ʙ10mm

                       Boundary dimensions                   Bearing numbers         Abutment          Mass
                                                                                     dimensions
                              mm                                                        mm              kg
                                                                                    da       ras
            d         F  1)      B       rs min  2)  t                             min      max       (approx.)
                     7           10       0.15     1         IR  5ʷʷ 7ʷʷ10          6.2     0.15      0.0014
            5        8   0       12       0.3      1         IR  5ʷʷ 8ʷʷ12          7       0.3       0.0028
                       ʵ0.006
                     8           16       0.3      ʵ        ˞  IR  5ʷʷ 8ʷʷ16        7       0.3       0.0038
                     8           10       0.15     1         IR  6ʷʷ 8ʷʷ10          7.2     0.15      0.0017
                     9           12       0.3      1         IR  6ʷʷ 9ʷʷ12          8       0.3       0.0032
                     9   0       16       0.3      1         IR  6ʷʷ 9ʷʷ16          8       0.3       0.0043
            6          ʵ0.006
                    10           10       0.3      1         IR  6ʷʷ10ʷʷ10          8       0.3       0.0037
                    10           12       0.3      ʵ        ˞  IR  6ʷʷ10ʷʷ12D       8       0.3       0.0046
                    10           13       0.3      1         IR  6ʷʷ10ʷʷ13          8       0.3       0.0050
                     9           10       0.15     1         IR  7ʷʷ 9ʷʷ10          8.2     0.15      0.0019
                    10           10.5     0.3      1         IR  7ʷʷ10ʷʷ10.5        9       0.3       0.0031
                         0
            7       10  ʵ0.006   12       0.3      1         IR  7ʷʷ10ʷʷ12          9       0.3       0.0036
                    10           16       0.3      1         IR  7ʷʷ10ʷʷ16          9       0.3       0.0049
                       ʵ0
                    12           16       0.3      1         IR  7ʷʷ12ʷʷ16          9       0.3       0.0093
                       ʵ0.008
                         0
                    10           11       0.15     1         IR  8ʷʷ10ʷʷ11          9.2     0.15      0.0024
                       ʵ0.006
                    12           10       0.3      1         IR  8ʷʷ12ʷʷ10         10       0.3       0.0048
                    12           10.5     0.3      1         IR  8ʷʷ12ʷʷ10.5       10       0.3       0.0050
            8
                    12   0       12       0.3      ʵ        ˞  IR  8ʷʷ12ʷʷ12D      10       0.3       0.0057
                       ʵ0.008
                    12           12.5     0.3      1         IR  8ʷʷ12ʷʷ12.5       10       0.3       0.0059
                    14           16       0.3      1         IR  8ʷʷ14ʷʷ16         10       0.3       0.013
                    12           11       0.3      1         IR  9ʷʷ12ʷʷ11         11       0.3       0.0041
                    12   0       12       0.3      1         IR  9ʷʷ12ʷʷ12         11       0.3       0.0045
            9          ʵ0.008
                    12           16       0.3      1         IR  9ʷʷ12ʷʷ16         11       0.3       0.0061
                    15           16       0.3      1         IR  9ʷʷ15ʷʷ16         11       0.3       0.014
                    13           12.5     0.3      1         IR10ʷʷ13ʷʷ12.5        12       0.3       0.0052
                    14           12       0.3      1         IR10ʷʷ14ʷʷ12          12       0.3       0.0073
                    14   0       13       0.3      1         IR10ʷʷ14ʷʷ13          12       0.3       0.0074
           10          ʵ0.008
                    14           14       0.3      ʵ        ˞  IR10ʷʷ14ʷʷ14D       12       0.3       0.0080
                    14           16       0.3      ʵ        ˞  IR10ʷʷ14ʷʷ16        12       0.3       0.0092
                    14           20       0.3      1         IR10ʷʷ14ʷʷ20          12       0.3       0.012
        Note 1) Dimensional tolerance to secure ordinary clearance when any of these inner rings is combined with needle roller bearing with no inner ring.
           2) Allowable minimum chamfer dimension r .
        Remarks: 1. Nominal number plus code "D" represents inner ring with oil hole.
              2. Nominal number plus ˞-mark represents inner ring with fine-chamfered outer surface.
                                                         B-117
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