NTN - Large Bearings

Double Row Tapered Roller Bearings (Inside Direction)
Sa
Da
r1a
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Fa
Fr
e
Fa
e Fr
X Y X Y
1 Y1 0.67 Y2
static
PorFrYoFa
For values of e, Y2 and Yo
see the table below.
Abutment and fillet dimensions Load 2 Constant Axial load factors Mass
center
mm mm kg
d a D a S a r as r las
max max min min max max a e Y 1 Y 2 Y o (approx.)
330 442 425 16 3 4 31 0.37 1.80 2.69 1.76 70.7
335 478 440 16 4 5 18 0.40 1.68 2.50 1.64 126
327 416 379.5 5.2 4.8 3.3 73 0.60 1.12 1.67 1.10 62.8
350 462 440 16 3 4 34 0.37 1.80 2.69 1.76 76.3
358 493 442.5 2.5 3 3 – 23 0.35 1.95 2.90 1.91 173
355 518 480 18 4 5 18.5 0.40 1.68 2.50 1.64 164
379 558 480 5.5 2.5 4 3 0.43 1.57 2.34 1.53 288
360 598 544 19.5 4 4 – 16.5 0.43 1.57 2.34 1.53 390
369 456 424 6.5 2.5 2.5 49.5 0.40 1.68 2.50 1.64 57.8
370 498 480 18 4 5 36 0.37 1.80 2.69 1.76 101
380 558 515 18 4 5 35.5 0.40 1.68 2.50 1.64 207
376.5 462 436 5.4 3 3 57.5 0.42 1.62 2.42 1.59 58.7
407 568 515 3.5 4 4 6 0.33 2.03 3.02 1.98 218
395 518 495 18 4 5 41 0.37 1.80 2.69 1.76 107
400 578 535 18 4 5 25.5 0.40 1.68 2.50 1.64 218
431 652 552 16.5 5 5 – 12 0.47 1.43 2.12 1.40 570
456 653.5 575 19.5 5 5 – 18.5 0.40 1.68 2.50 1.64 525
456 653.5 575 15.5 5 5 – 18.5 0.40 1.68 2.50 1.64 525
418 538 504 18 4 5 44.5 0.37 1.80 2.69 1.76 110
428 598 537.5 20 4 5 29 0.40 1.68 2.50 1.64 231
407.5 512 476 7.5 2 3 26 0.43 1.57 2.34 1.53 116
440.5 568 533 8.5 4 4 28.5 0.33 2.03 3.02 1.98 134
440.5 568 533 8.5 4 4 36.5 0.33 2.03 3.02 1.98 134
440 578 550 18 4 5 45 0.37 1.80 2.69 1.76 146
445 622 580 20 5 5 32.5 0.40 1.68 2.50 1.64 259
457.5 622 565 11.5 5 5 – 1 0.39 1.74 2.59 1.70 325
470 694 604 20.5 6 6 – 32 0.40 1.68 2.50 1.64 672
477.5 744 639 16.6 6 6 – 47 0.40 1.68 2.50 1.64 895
441 502 486 6.5 1.5 3 99.5 0.47 1.43 2.12 1.40 41.9
B-157