Ball and Roller Bearings - Ntn-snr.com

Tapered Roller Bearings
Sa
Sb
r1a
ra
Equivalent bearing load
dynamic
PrXFrYFa
Da db
da
Db
Fa Fa
e
Fr Fr e
X Y X Y
1 0 0.4 Y2
static
Por0.5FrYoFa
When PorFrusePorFr
For values of e, Y2 and Yo
see the table below.
Dimensions Abutment and fillet dimensions Load Constant Axial Mass
series to center load factors
ISO 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.
4FD 134 136 203 181 204 6 11.5 2.5 2 51.5 0.44 1.38 0.76 9.08
2GB 138 152 246 221 239 6 13.5 3 2.5 49 0.35 1.74 0.96 14.2
138 152 246 221 239 6 13.5 3 2.5 48.5 0.35 1.73 0.95 13.2
7GB 138 145 246 203 244 9 26 3 2.5 82.5 0.83 0.73 0.40 15.4
2GD 138 145 246 213 239 6 21.5 3 2.5 61.5 0.35 1.74 0.96 22.4
2CC 140 139 171.5 163.5 174 6 7 2 1.5 31.5 0.34 1.77 0.97 2.36
140 139 170 163.5 174 6 6 2 2 34 0.37 1.60 0.88 2.22
4EC 142 144 190 178 192 8 11 2 2 43.5 0.43 1.38 0.76 4.96
4FB 148 152 216 203 218 7 9.5 3 2.5 45.5 0.44 1.38 0.76 7.25
4FD 148 146 216 193 219 7 13.5 3 2.5 57 0.44 1.38 0.76 11.2
2GB 152 164 262 239 255 8 14.5 4 3 53.5 0.35 1.74 0.96 17.4
7GB 152 152 262 218 261 9 28 4 3 87.5 0.83 0.73 0.40 19
2CC 150 150 181.5 177 184 6 6 2 1.5 34 0.36 1.67 0.92 2.51
4DC 152 153 200 187 202 8 11 2 2 46 0.46 1.31 0.72 5.28
4FB 158 163 236 219 237 7 9.5 3 2.5 48.5 0.44 1.38 0.76 9.26
158 163 236 219 237 7 9.5 2.5 2.5 47.5 0.43 1.39 0.77 8.37
4FD 158 158 236 210 238 9 13.5 3 2.5 61 0.44 1.38 0.76 14.1
2GB 162 179 282 251 273 9 14.5 4 3 56.5 0.35 1.74 0.96 21.2
162 179 282 252 273 9 14.5 4 3 57 0.35 1.73 0.95 20.4
7GB 162 165 282 234 280 9 30 4 3 94 0.83 0.73 0.40 23
2DC 162 162 200 192 202 7 8 2 2 36.5 0.33 1.83 1.01 3.92
4EC 164 164 213 200 216 8 12 2.5 2 49.5 0.46 1.31 0.72 6.37
4GB 168 175 256 234 255 7 11 3 2.5 51.5 0.44 1.38 0.76 11.2
4GD 168 170 256 226 254 8 17 3 2.5 64.5 0.44 1.38 0.76 18.2
2GB 172 193 302 269 292 8 17 4 3 61 0.35 1.74 0.96 25.5
172 193 302 269 292 8 17 4 3 62.5 0.37 1.60 0.88 24.7
172 176 302 250 302 9 32 4 3 100.5 0.83 0.73 0.40 27.7
2DC 172 170.5 210 199 213.5 7 8 2 2 38.5 0.35 1.73 0.95 4.15
4EC 174 175 228 213 231 8 13 2.5 2 52.5 0.46 1.31 0.72 7.8
4GB 178 189 276 252 272 8 12 3 2.5 55.5 0.44 1.38 0.76 12.9
4GD 178 182 276 242 275 10 17 3 2.5 70 0.44 1.38 0.76 23.5
2GB 182 205 322 286 310 10 17 4 3 64 0.35 1.74 0.96 29.9
182 205 322 286 311 10 17 4 3 65.5 0.37 1.60 0.88 29.2
3DC 182 183 220 213 222 7 8 2 2 42.5 0.38 1.57 0.86 4.4
Note: When selecting bearings with bearing numbers marked with "", please consult NTN Engineering.
B-151