NTN - Large Bearings

Double Row Angular Contact Ball Bearings
Da
ra
ra
da
Da
r1a
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Contact
angle
30˚
40˚
e
0.80
1.14
Single
DB, DF
Fa Fre Fa Fre Fa Fre Fa Fre
X Y X Y X Y X Y
1
1
0
0
0.39 0.76
0.35 0.57
1
1
0.78
0.55
0.63
0.57
1.24
0.93
static
PorXo FrYo Fa
Contact
angle
30˚
40˚
Single
Xo
0.5
0.5
DB, DF
Yo Xo Yo
0.33 1 0.66
0.26 1 0.52
For single, When PorFr use PorFr
Abutment and Load Mass
fillet dimensions center
mm
mm
d a D a r as r las kg
min max max max a (approx.)
271 212 2 1.5 177 14.3
267.5 212 2 88.5 14.3
281 212 2 1.5 244 16.5
277.5 212 2 2 179 16.4
281 212 2 1.5 180 16.4
281 212 2 1.5 179 16.4
281 212 2 1.5 179 16.4
298 212 2 99 28.3
297.5 232 2 95.5 17.8
297.5 232 2 95.5 17.8
302.5 232 2 1 191 17.8
307.5 232 2 101 24.4
307.5 232 2 136 24.4
321 242 2 1.5 202 22
321 242 2 1.5 202 22
321 242 2 1.5 202 22
351 254 2.5 1.5 308 39.7
328 262 2 2 208 18.4
357.5 272 2 155 31.3
357.5 272 2 114 31.3
357.5 272 2 2 228 30.9
382.5 292 2 1 239 33.4
417.5 312 2.5 132 52.4
518 382 4 171 131
B-35