NTN - Large Bearings

Spherical Roller Bearings
ra
Da
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Fa
Fr
e
Fa
e Fr
X Y X Y
1 Y1 0.67 Y2
static
PorFrYo Fa
For values of e, Y1, Y2 and Yo
see the table below.
Constant Axial load factors Mass (approx.)
kg
Cylindrical tapered
e Y 1 Y 2 Y o bore bore
0.33 2.04 3.04 2.00 23 22.6
0.37 1.82 2.70 1.78 27.5 26.3
0.32 2.11 3.15 2.07 25.1 24.2
0.39 1.72 2.56 1.68 34.3 33.8
0.27 2.49 3.70 2.43 29.3 28.6
0.35 1.91 2.84 1.86 39 37.8
0.34 1.97 2.93 1.92 70 68.5
0.18 3.81 5.67 3.73 8.6 8.34
0.26 2.65 3.94 2.59 17.7 17.1
0.33 2.03 3.02 1.98 24.3 23.9
0.31 2.16 3.22 2.12 23 22.6
0.33 2.07 3.09 2.03 35.3 34.2
0.40 1.69 2.51 1.65 42.8 42.2
0.27 2.47 3.68 2.42 36.6 35.8
0.36 1.89 2.82 1.85 47.6 46.2
0.34 1.97 2.94 1.93 81 79.3
0.17 3.91 5.82 3.82 12.1 11.7
0.26 2.59 3.85 2.53 22.7 21.9
0.35 1.94 2.89 1.90 31 30.5
0.33 2.05 3.05 2.00 43.3 42
0.41 1.64 2.44 1.60 53.4 52.6
0.28 2.45 3.64 2.39 44 43
0.36 1.88 2.79 1.83 57.2 55.5
0.34 1.98 2.95 1.94 93.2 91.2
0.19 3.62 5.39 3.54 13.1 12.7
0.26 2.59 3.85 2.53 29.9 28.8
0.34 1.97 2.94 1.93 40.2 39.6
0.33 2.07 3.09 2.03 53.3 51.6
0.41 1.66 2.47 1.62 67 66
0.27 2.46 3.66 2.40 60.4 59.1
0.36 1.85 2.76 1.81 80 77.6
0.41 1.64 2.44 1.61 81.9 80.8
0.33 2.06 3.07 2.02 117 115
0.16 4.13 6.15 4.04 14 13.6
0.25 2.69 4.01 2.63 33.4 32.2
B-211