Ball and Roller Bearings - Ntn-snr.com

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 eY1Y2 and Yo
see the table below.
Abutment and Constant Axial load factors Mass approx.
fillet dimensions
mm
kg
d a D a r as cylindrical tapered
min max max e Y 1 Y 2 Y o bore bore
214 326 2.5 0.33 2.05 3.05 2.00 43.3 42
214 326 2.5 0.41 1.64 2.44 1.60 53.4 52.6
218 342 3 0.28 2.45 3.64 2.39 44 43
218 342 3 0.36 1.88 2.79 1.83 57.2 55.5
222 398 4 0.34 1.98 2.95 1.94 93.2 91.2
232 288 2 0.19 3.62 5.39 3.54 13.1 12.7
234 326 2.5 0.26 2.59 3.85 2.53 29.9 28.8
234 326 2.5 0.34 1.97 2.94 1.93 40.2 39.6
238 352 3 0.33 2.07 3.09 2.03 53.3 51.6
238 352 3 0.41 1.66 2.47 1.62 67 66
238 382 3 0.27 2.46 3.66 2.40 60.4 59.1
238 382 3 0.36 1.85 2.76 1.81 80 77.6
242 438 4 0.33 2.06 3.07 2.02 117 115
252 308 2 0.16 4.13 6.15 4.04 14 13.6
254 346 2.5 0.25 2.69 4.01 2.63 33.4 32.2
254 346 2.5 0.32 2.09 3.12 2.05 43 42.3
258 382 3 0.32 2.11 3.15 2.07 65.8 63.8
258 382 3 0.40 1.69 2.51 1.65 82.2 80.9
258 422 3 0.28 2.43 3.62 2.38 81.7 80
258 422 3 0.37 1.83 2.72 1.79 108 105
262 478 4 0.32 2.10 3.13 2.06 148 145
272 348 2 0.19 3.53 5.26 3.45 24 23.3
278 382 3 0.26 2.63 3.92 2.57 48.5 46.8
278 382 3 0.34 1.96 2.91 1.91 65.2 64.1
278 422 3 0.33 2.05 3.06 2.01 91.4 88.6
278 422 3 0.41 1.63 2.43 1.60 114 112
282 458 4 0.28 2.45 3.64 2.39 106 104
282 458 4 0.37 1.83 2.72 1.79 141 137
288 512 5 0.32 2.13 3.18 2.09 183 179
292 368 2 0.17 3.88 5.78 3.79 26.4 25.6
298 402 3 0.25 2.73 4.06 2.67 52.4 50.6
298 402 3 0.33 2.06 3.07 2.02 69 67.9
302 438 4 0.32 2.13 3.18 2.09 97.7 94.6
302 438 4 0.39 1.73 2.58 1.69 120 118
302 478 4 0.26 2.57 3.83 2.51 112 110
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-241