Ball and Roller Bearings - Ntn-snr.com

Tapered Roller Bearings
Sa
Sb
r1a
ra
Equivalent bearing load
dynamic
PrXFrYFa
Da db
da
Db
Fa Fa
e
Fr Fr e
X Y X Y
1 0 0.4 Y2
static
Por0.5FrYoFa
When PorFrusePorFr
For values of e, Y2 and Yo
see the table below.
Dimensions Abutment and fillet dimensions Load Constant Axial Mass
series to center load factors
ISO mm mm kg
d a d b D a D b S a S b r as r 1as
min max max min min min min max max a e Y 2 Y o approx.
38.5 39.5 63.5 57 67 3 5.5 1.5 1.5 17.5 0.47 1.27 0.70 0.398
7FB 38.5 39 63.5 55 68 3 6.5 1.5 1.5 23.5 0.83 0.73 0.40 0.398
2FD 38.5 38 63.5 59 66 3 5.5 1.5 1.5 18.5 0.31 1.90 1.05 0.583
5FD 38.5 37 63.5 57 68 2 5.5 1.5 1.5 23 0.55 1.10 0.60 0.592
38.5 37 63.5 57 67.5 2 5.5 1.5 1.5 23 0.61 0.99 0.54 0.594
4CC 37.5 38 52.5 50 55 3 4 1 1 14.5 0.45 1.32 0.73 0.181
2DE 37.5 38 59.5 55 62 5 5.5 1 1 17 0.35 1.73 0.95 0.395
5FD 40.5 39 66.5 61 71 3 6.5 1.5 1.5 23 0.55 1.10 0.60 0.659
2BD 39.5 40 50.5 48 52.5 2.5 2.5 0.6 0.6 10.5 0.29 2.06 1.13 0.121
4CC 40.5 40 56.5 54 59 4 4 1 1 15.5 0.45 1.32 0.73 0.224
2CE 40.5 40.5 56.5 52 59 3 4 1 1 14 0.31 1.97 1.08 0.263
3DB 43.5 44 63.5 62 67 3 3 1.5 1.5 15 0.37 1.60 0.88 0.344
3DC 43.5 43 63.5 61 67 3 5 1.5 1.5 17.5 0.37 1.60 0.88 0.457
5DC 43.5 42 63.5 59 68 3 6 1.5 1.5 21.5 0.58 1.03 0.57 0.461
43.5 42 63.5 59 68 3 6 1.5 1.5 20.5 0.55 1.10 0.60 0.461
2DE 43.5 42 63.5 61 68 5 6 1.5 1.5 18.5 0.35 1.70 0.93 0.531
2FB 45 45 71.5 70 74 3 4.5 2 1.5 17 0.31 1.90 1.05 0.540
45 44 71.5 63.5 75.5 3 5.5 2 1.5 20.5 0.55 1.10 0.60 0.517
7FB 45 44 71.5 62 76.5 3 7.5 2 1.5 26 0.83 0.73 0.40 0.530
2FE 45 43 71.5 66 74 3 7.5 2 1.5 20.5 0.31 1.90 1.05 0.787
5FE 45 43 71.5 66 76 3 7.5 2 1.5 25 0.55 1.10 0.60 0.797
2BC 44.5 45.5 57.5 54 58.5 3 3 0.6 0.6 11.5 0.29 2.07 1.14 0.161
3CD 45.5 46 62.5 60 65 4 4.5 1 1 15 0.38 1.58 0.87 0.273
2BE 45.5 46 62.5 60 64 2.5 4 1 1 15 0.28 2.12 1.17 0.312
2CE 48.5 47 66.5 65 71 4 5.5 1.5 1.5 18 0.36 1.69 0.93 0.494
3DB 48.5 49 71.5 69 75 3 3.5 1.5 1.5 16.5 0.37 1.60 0.88 0.435
3DC 48.5 48 71.5 68 75 3 5.5 1.5 1.5 19 0.37 1.60 0.88 0.558
2DE 48.5 47 71.5 67 76 5 7 1.5 1.5 21 0.36 1.68 0.92 0.728
2EE 52 48 75 70 80 5 5 2 2 22.5 0.34 1.74 0.96 0.907
2FB 50 52 81.5 77 82 3 5 2 1.5 19.5 0.35 1.74 0.96 0.769
50 50 80 72 85.5 3.5 6 2 1.5 23 0.55 1.10 0.60 0.728
7FB 50 50 81.5 71 86.5 3 8 2 1.5 29.5 0.83 0.73 0.40 0.738
2FD 50 50 81.5 73 82 3 8 2 1.5 23 0.35 1.74 0.96 1.08
5FD 50 48 81.5 72 84 3 8 2 1.5 27.5 0.55 1.10 0.60 1.1
2BC 50 50 63.5 59.5 64.5 3 3 0.6 0.6 12 0.32 1.88 1.04 0.188
NTN
B-141