Page 38 - needle bearings

Bearing Fits
NTN

Table 6.3 Numerical fit values for radial bearing (JIS Class-0)
Table 6.3(1) Bearing fits on shaft
Unit Жm
Nominal bore Allowable g6 h5 h6 j5 k5 m5 m6 n6
diameter deviation of
mean bore Bearing Shaft Bearing Shaft Bearing Shaft Bearing Shaft Bearing Shaft Bearing Shaft Bearing Shaft Bearing Shaft
d diameter
mm ∆dmp

pver incl. high low
3 6 0 ʵ8 4Tʙ12L 8Tʙ 5L 8Tʙ 8L 11Tʙ 2L 14Tʙ1T 17Tʙ 4T 20Tʙ 4T 24Tʙ 8T
6 10 0 ʵ8 3Tʙ14L 8Tʙ 6L 8Tʙ 9L 12Tʙ 2L 15Tʙ1T 20Tʙ 6T 23Tʙ 6T 27Tʙ10T
10 18 0 ʵ8 2Tʙ17L 8Tʙ 8L 8Tʙ11L 13Tʙ 3L 17Tʙ1T 23Tʙ 7T 26Tʙ 7T 31Tʙ12T
18 30 0 ʵ10 3Tʙ20L 10Tʙ 9L 10Tʙ13L 15Tʙ 4L 21Tʙ2T 27Tʙ 8T 31Tʙ 8T 38Tʙ15T
30 50 0 ʵ12 3Tʙ25L 12Tʙ11L 12Tʙ16L 18Tʙ 5L 25Tʙ2T 32Tʙ 9T 37Tʙ 9T 45Tʙ17T
50 80 0 ʵ15 5Tʙ29L 15Tʙ13L 15Tʙ19L 21Tʙ 7L 30Tʙ2T 39Tʙ11T 45Tʙ11T 54Tʙ20T
80 120 0 ʵ20 8Tʙ34L 20Tʙ15L 20Tʙ22L 26Tʙ 9L 38Tʙ3T 48Tʙ13T 55Tʙ13T 65Tʙ23T
120 140
140 160 0 ʵ25 11Tʙ39L 25Tʙ18L 25Tʙ25L 32Tʙ11L 46Tʙ3T 58Tʙ15T 65Tʙ15T 77Tʙ27T
160 180
180 200
200 225 0 ʵ30 15Tʙ44L 30Tʙ20L 30Tʙ29L 37Tʙ13L 54Tʙ4T 67Tʙ17T 76Tʙ17T 90Tʙ31T
225 250
250 280
0 ʵ35 18Tʙ49L 35Tʙ23L 35Tʙ32L 42Tʙ16L 62Tʙ4T 78Tʙ20T 87Tʙ20T 101Tʙ34T
280 315
315 355
0 ʵ40 22Tʙ54L 40Tʙ25L 40Tʙ36L 47Tʙ18L 69Tʙ4T 86Tʙ21T 97Tʙ21T 113Tʙ37T
355 400
400 450
0 ʵ45 25Tʙ60L 45Tʙ27L 45Tʙ40L 52Tʙ20L 77Tʙ5T 95Tʙ23T 108Tʙ23T 125Tʙ40T
450 500

Table 6.3 (2) Bearing fits in housing hole
Unit Жm
Nominal outer Allowable H7 J7 K6 K7 M7 N7 P7
diameter deviation of
mean outer Housing Bearing Housing Bearing Housing Bearing Housing Bearing Housing Bearing Housing Bearing Housing Bearing
D
diameter
mm
∆Dmp
over incl. high low
6 10 0 ʵ8 0ʙ 23L 7Tʙ16L 7Tʙ10L 10Tʙ13L 15Tʙ 8L 19Tʙ 4L 24Tʙ 1L
10 18 0 ʵ8 0ʙ 26L 8Tʙ18L 9Tʙ10L 12Tʙ14L 18Tʙ 8L 23Tʙ 3L 29Tʙ 3L
18 30 0 ʵ9 0ʙ 30L 9Tʙ21L 11Tʙ11L 15Tʙ15L 21Tʙ 9L 28Tʙ 2L 35Tʙ 5L
30 50 0 ʵ11 0ʙ 36L 11Tʙ25L 13Tʙ14L 18Tʙ18L 25Tʙ11L 33Tʙ 3L 42Tʙ 6L
50 80 0 ʵ13 0ʙ 43L 12Tʙ31L 15Tʙ17L 21Tʙ22L 30Tʙ13L 39Tʙ 4L 52Tʙ 8L
80 120 0 ʵ15 0ʙ 50L 13Tʙ37L 18Tʙ19L 25Tʙ25L 35Tʙ15L 45Tʙ 5L 59Tʙ 9L
120 150 0 ʵ18 0ʙ 58L 14Tʙ44L 21Tʙ22L 28Tʙ30L 40Tʙ18L 52Tʙ 6L 68Tʙ10L
150 180 0 ʵ25 0ʙ 65L 14Tʙ51L 21Tʙ29L 28Tʙ37L 40Tʙ25L 52Tʙ13L 68Tʙ 3L
180 250 0 ʵ30 0ʙ 76L 16Tʙ60L 24Tʙ35L 33Tʙ43L 46Tʙ30L 60Tʙ16L 79Tʙ 3L
250 315 0 ʵ35 0ʙ 87L 16Tʙ71L 27Tʙ40L 36Tʙ51L 52Tʙ35L 66Tʙ21L 88Tʙ 1L
315 400 0 ʵ40 0ʙ 97L 18Tʙ79L 29Tʙ47L 40Tʙ57L 57Tʙ40L 73Tʙ24L 98Tʙ 1L
400 500 0 ʵ45 0ʙ108L 20Tʙ88L 32Tʙ53L 45Tʙ63L 63Tʙ45L 80Tʙ28L 108Tʙ 0
Remarks: Fit symbols “L” and “T” represent bearing clearance and interference respectively.

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