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NTN - Large Bearings

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Double Row Tapered Roller <strong>Bearings</strong> (Outside Direction)<br />

Db<br />

r1a<br />

ra<br />

da<br />

Equivalent bearing load<br />

dynamic<br />

PrXFrYFa<br />

Fa<br />

Fr<br />

e<br />

Fa<br />

e Fr<br />

X Y X Y<br />

1 Y1 0.67 Y2<br />

static<br />

PorFrYoFa<br />

For values of e, Y2 and Yo<br />

see the table below.<br />

Abutment and fillet dimensions Load<br />

center<br />

Constant Axial load factors Mass<br />

mm mm kg<br />

d a D b r as r las<br />

min max max max a e Y 1 Y 2 Y o (approx.)<br />

388 481 6.4 1.5 195 0.44 1.53 2.28 1.50 85.2<br />

387 478 6.4 1.5 197.5 0.36 1.85 2.76 1.81 117<br />

400 499 6.4 1.5 198.5 0.33 2.03 3.02 1.98 142<br />

400 481 6.4 1.5 195 0.44 1.53 2.28 1.50 77.3<br />

410 482 6.4 1.5 221 0.53 1.27 1.89 1.24 69<br />

415 519 6.4 1.5 208 0.33 2.03 3.02 1.98 149<br />

425 561 6.4 1.5 226 0.33 2.03 3.02 1.98 247<br />

399 433 3.5 0.8 128.5 0.34 1.99 2.96 1.94 14.1<br />

417 519 6.4 1.5 208 0.33 2.03 3.02 1.98 146<br />

417 520 6.4 1.5 208 0.33 2.03 3.02 1.98 146<br />

415 495 6.4 1.5 210.5 0.42 1.61 2.40 1.58 90<br />

428 516 6.4 1.5 214.5 0.47 1.43 2.12 1.40 83.6<br />

428 516 6.4 1.5 230.5 0.47 1.43 2.12 1.40 97.7<br />

435 518 6.4 1.5 214.5 0.47 1.43 2.12 1.40 78.8<br />

443 570 6.8 1.5 209 0.38 1.76 2.62 1.72 169<br />

451 561 6.4 1.5 226 0.33 2.03 3.02 1.98 188<br />

457 549 3.3 1.5 255.5 0.55 1.24 1.84 1.21 95.3<br />

446 561 6.4 1.5 252.5 0.53 1.28 1.91 1.25 124<br />

472 630 6.4 1.5 235.5 0.40 1.68 2.50 1.64 225<br />

484 606 6.4 1.5 240 0.33 2.03 3.02 1.98 228<br />

494 570 9.7 1.5 219 0.40 1.67 2.49 1.63 106<br />

507 681 9.7 1.5 266 0.39 1.72 2.56 1.68 360<br />

516 648 6.4 1.5 258.5 0.33 2.03 3.02 1.98 310<br />

513 597 6.4 1.5 206.5 0.33 2.03 3.02 1.98 118<br />

516 609 6.4 1.5 215 0.34 1.98 2.94 1.93 148<br />

B-149

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