Page 183 - needle bearings

Inner rings
NTN

d 28ʙ35mm

Boundary dimensions Bearing numbers Abutment Mass
dimensions
mm mm kg
da ras
d F 1) B rs min 2) t min max (approx.)
32 20 0.3 1.8 IR28ʷʷ32ʷʷ20 30 0.3 0.028
28 32 ʴ0.008 23 0.3 1.8 IR28ʷʷ32ʷʷ23 30 0.3 0.034
ʵ0.002
32 30 0.3 ʵ ˞ IR28ʷʷ32ʷʷ30 30 0.3 0.044
ʴ0.008
29 32 13 0.3 1.8 IR29ʷʷ32ʷʷ13 31 0.3 0.015
ʵ0.002
35 12.5 0.3 1.8 IR30ʷʷ35ʷʷ12.5 32 0.3 0.024
35 13 0.3 1.3 IR30ʷʷ35ʷʷ13 32 0.3 0.025
35 16 0.3 ʵ ˞ IR30ʷʷ35ʷʷ16 32 0.3 0.031
35 16.5 0.3 1.8 IR30ʷʷ35ʷʷ16.5 32 0.3 0.032
35 17 0.3 1.8 IR30ʷʷ35ʷʷ17 32 0.3 0.032
35 18 0.3 ʵ ˞ IR30ʷʷ35ʷʷ18D 32 0.3 0.035
35 20 0.3 ʵ ˞ IR30ʷʷ35ʷʷ20 32 0.3 0.038
ʴ0.008
30 35 ʵ0.002 20.5 0.3 1.8 IR30ʷʷ35ʷʷ20.5 32 0.3 0.039
35 23 0.3 1.8 IR30ʷʷ35ʷʷ23 32 0.3 0.044
35 26 0.3 1.8 IR30ʷʷ35ʷʷ26 32 0.3 0.050
35 30 0.3 ʵ ˞ IR30ʷʷ35ʷʷ30 32 0.3 0.059
35 32 0.3 1.8 IR30ʷʷ35ʷʷ32 32 0.3 0.063
37 18 0.3 1.8 IR30ʷʷ37ʷʷ18 32 0.3 0.050
37 22 0.6 1.8 IR30ʷʷ37ʷʷ22 34 0.6 0.061
38 20 0.6 ʵ ˞ IR30ʷʷ38ʷʷ20 34 0.6 0.065
37 20 0.3 2 IR32ʷʷ37ʷʷ20 34 0.3 0.040
37 30 0.3 ʵ ˞ IR32ʷʷ37ʷʷ30 34 0.3 0.063
38 0 32 0.3 2 IR32ʷʷ38ʷʷ32 34 0.3 0.082
32 ʵ0.011
40 20 0.6 2 IR32ʷʷ40ʷʷ20 36 0.6 0.068
40 27 0.6 2 IR32ʷʷ40ʷʷ27 36 0.6 0.092
40 36 0.6 2 IR32ʷʷ40ʷʷ36 36 0.6 0.124
0
33 37 ʵ0.011 13 0.3 2 IR33ʷʷ37ʷʷ13 35 0.3 0.022
40 12.5 0.3 2 IR35ʷʷ40ʷʷ12.5 37 0.3 0.027
40 0 16.5 0.3 2 IR35ʷʷ40ʷʷ16.5 37 0.3 0.037
35 ʵ0.011
40 17 0.3 2 IR35ʷʷ40ʷʷ17 37 0.3 0.038
40 20 0.3 2 IR35ʷʷ40ʷʷ20 37 0.3 0.044

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-121