Page 184 - needle bearings

Inner rings
NTN

Type IR

d 35ʙ45mm

Boundary dimensions Bearing numbers Abutment Mass
dimensions
mm mm kg
da ras
d F 1) B rs min 2) t min max (approx.)
40 20.5 0.3 2 IR35ʷʷ40ʷʷ20.5 37 0.3 0.046
40 30 0.3 ʵ ˞ IR35ʷʷ40ʷʷ30 37 0.3 0.068
40 34 0.3 1.8 IR35ʷʷ40ʷʷ34 37 0.3 0.079
40 40 0.3 2 IR35ʷʷ40ʷʷ40 37 0.3 0.091
42 0 20 0.6 1.8 IR35ʷʷ42ʷʷ20 39 0.6 0.064
35 ʵ0.011
42 21 0.6 ʵ ˞ IR35ʷʷ42ʷʷ21 39 0.6 0.068
42 23 0.6 ʵ ˞ IR35ʷʷ42ʷʷ23D 39 0.6 0.074
42 27 0.6 2 IR35ʷʷ42ʷʷ27 39 0.6 0.080
42 36 0.6 2 IR35ʷʷ42ʷʷ36 39 0.6 0.117
43 22 0.6 2 IR35ʷʷ43ʷʷ22 39 0.6 0.081

43 0 20 0.3 1.8 IR38ʷʷ43ʷʷ20 40 0.3 0.048
38 ʵ0.011
43 30 0.3 ʵ ˞ IR38ʷʷ43ʷʷ30 40 0.3 0.074
45 16.5 0.3 2 IR40ʷʷ45ʷʷ16.5 42 0.3 0.042
45 17 0.3 2 IR40ʷʷ45ʷʷ17 42 0.3 0.043
45 20 0.3 2 IR40ʷʷ45ʷʷ20 42 0.3 0.051
45 20.5 0.3 2 IR40ʷʷ45ʷʷ20.5 42 0.3 0.053
45 26.5 0.3 ʵ ˞ IR40ʷʷ45ʷʷ26.5 42 0.3 0.068
45 30 0.3 2 IR40ʷʷ45ʷʷ30 42 0.3 0.077
45 0 34 0.3 2 IR40ʷʷ45ʷʷ34 42 0.3 0.088
40 ʵ0.011
45 40 0.3 2 IR40ʷʷ45ʷʷ40 42 0.3 0.106
48 22 0.6 2 IR40ʷʷ48ʷʷ22 44 0.6 0.092
48 23 0.6 ʵ ˞ IR40ʷʷ48ʷʷ23 44 0.6 0.097
48 30 0.6 2 IR40ʷʷ48ʷʷ30 44 0.6 0.123
48 40 0.6 2 IR40ʷʷ48ʷʷ40 44 0.6 0.170
50 20 0.3 0.8 IR40ʷʷ50ʷʷ20 44 0.3 0.106
50 22 1 2 IR40ʷʷ50ʷʷ22 45 1 0.118
47 0 20 0.3 2 IR42ʷʷ47ʷʷ20 44 0.3 0.053
42 ʵ0.011
47 30 0.3 2 IR42ʷʷ47ʷʷ30 44 0.3 0.080
50 0 20 0.3 2 IR45ʷʷ50ʷʷ20 47 0.3 0.057
45 ʵ0.011
50 25 0.6 2 IR45ʷʷ50ʷʷ25 49 0.6 0.071

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-122