NTN - Large Bearings

Deep Groove Ball Bearings
D
r
B
r
d
Da
ra
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Fa Fa
Fa
e
e Fr Fr e
Cor
X Y X Y
0.010 0.18
0.020 0.20
0.040 0.24
0.070 0.27
0.10 0.29
0.15 0.32
0.20 0.35
0.30 0.38
0.40 0.41
0.50 0.44
static
Por0.6Fr0.5Fa
When PorFr use PorFr
1 0 0.56
2.46
2.14
1.83
1.61
1.48
1.35
1.25
1.13
1.05
1.00
d 190260mm
Boundary dimensions Basic load ratings Bearing Drawing 1 Abutment and Mass
dynamic static dynamic static numbers No. fillet dimensions
mm kN kgf mm kg
d D B r s min
2
d a D a r as
C r C or C r C or min max max approx.
190
195
200
220
230
240
250
240 24 1.5 73 88 7,450 9,000 6838 B 198 232 1.5 2.62
260 33 2 113 127 11,500 13,000 6938 B 199 251 2 4.98
269.5 33 2.5 117 134 11,900 13,600 SC3805 G 202 258 2 5.87
290 31 2 134 156 13,700 15,900 16038 A 199 281 2 6.77
290 46 2.1 197 215 20,100 21,900 6038 A 201 279 2 9.18
340 55 4 255 281 26,000 28,700 6238 A 206 324 3 18.2
400 78 5 355 415 36,000 42,500 6338 A 210 380 4 41
270 35 2.5 130 147 13,300 15,000 SC3904 B 207 258 2 5.94
250 24 1.5 74 91.5 7,550 9,300 6840 B 208 242 1.5 2.73
280 38 2.1 157 168 16,000 17,100 6940 B 211 269 2 7.1
310 34 2 142 160 14,400 16,300 16040 A 209 301 2 8.68
310 51 2.1 218 243 22,200 24,800 6040 A 211 299 2 11.9
360 58 4 269 310 27,400 31,500 6240 A 216 344 3 21.6
420 80 5 410 500 42,000 51,000 6340 A 220 400 4 46.3
270 24 1.5 76.5 98 7,800 10,000 6844 B 228 262 1.5 3
300 38 2.1 160 180 16,400 18,400 6944 B 231 289 2 7.69
309.5 38 2.5 176 202 18,000 20,600 SC4401 B 232 298 2 8.77
319.5 46 2.5 193 220 19,700 22,400 SC4405 B 232 308 2 12
340 37 2.1 181 216 18,500 22,000 16044 A 231 329 2 11.3
340 56 3 241 289 24,600 29,400 6044 A 233 327 2.5 15.7
400 65 4 297 365 30,500 37,000 6244 A 236 384 3 30.2
460 88 5 410 520 42,000 53,000 6344 A 240 440 4 60.8
329.5 40 2.5 191 227 19,500 23,100 SC4605 B 242 318 2 10.8
339.5 45 3 224 266 22,800 27,200 SC4609 G 244 326 2.5 13.7
300 28 2 85 112 8,650 11,400 6848 B 249 291 2 4.6
320 38 2.1 170 203 17,300 20,700 6948 B 251 309 2 8.28
360 37 2.1 178 217 18,200 22,100 16048 A 251 349 2 12.1
360 56 3 249 310 25,400 32,000 6048 A 253 347 2.5 16.8
440 72 4 360 470 36,500 48,000 6248 B 258 422 3 51.7
500 95 5 440 590 45,000 60,000 6348 B 262 478 4 93.6
349.5 46 2.5 214 262 21,800 26,700 SC5003 B 262 338 2 13.4
260
320 28 2 87 120 8,900 12,200 6852 B 269 311 2 5
1 Drawing details are shown in Page B-5.
2 Smallest allowable dimension for chamfer dimension r.
B-8