NTN - Large Bearings

Single Row Tapered Roller Bearings
Sa
Sb
Da
db
r1a
ra
da
Db
Equivalent bearing load
dynamic
PrXFrYFa
Fa Fa
e
Fr Fr e
X Y X Y
1 0 0.4 Y2
static
Por0.5FrYoFa
When PorFr use PorFr
For values of e, Y2 and Yo
see the table below.
Abutment and fillet dimensions Load Constant Axial Mass
center
load factors
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.)
418 427 522 482 521.5 4 16 3 3 106 0.42 1.43 0.79 54
422 434.5 578 526 575 5 25 4 4 119 0.37 1.60 0.88 115
438 445.5 542 501.5 543 3.5 16 3 3 111.5 0.44 1.37 0.76 56.6
422 455.5 598 549 598 6.5 25 4 4 120 0.37 1.60 0.88 121
458 472.5 582 543 580.5 3.5 18 3 3 106 0.35 1.70 0.93 76
468 475 622 576.5 627.5 5 26 5 5 127 0.37 1.60 0.88 136
518 523.5 622 584.5 627.5 3.5 15 3 3 125 0.45 1.34 0.74 64.3
536 566.5 714 658.5 722.5 1.5 30 6 6 154 0.41 1.48 0.81 224
552 552 648 616.5 653 1.5 18 4 4 111 0.33 1.80 0.99 76.2
584 598.5 683 652.5 675.5 5 7 2.5 2 102.5 0.36 1.67 0.92 41.7
628 656 842 782.5 828 1.5 25 5 5 147 0.37 1.60 0.88 208
742 757 858 818 853.5 5.5 20 4 4 158.5 0.46 1.31 0.72 94
762 775.5 878 839 877.5 5 15 4 4 159 0.46 1.31 0.72 96
778 801.5 972 915 954 7 30 5 5 155 0.37 1.60 0.88 210
802 810 903 873.5 907 9.5 20 4 4 137.5 0.33 1.80 0.99 115
878 920.5 1,092 1,026.5 1,063 8.5 38 5 5 154.5 0.33 1.80 0.99 276
B-105