Bearing Number | Boundary dimensions | |||
d (mm) | d (in) | D (mm) | D (in) | |
N308 | 40 | 1.576 | 90 | 3.546 | N309 | 45 | 1.773 | 100 | 3.94 |
N310 | 50 | 1.97 | 110 | 4.334 | N311 | 55 | 2.167 | 120 | 4.728 |
N312 | 60 | 2.364 | 130 | 5.122 | N313 | 65 | 2.561 | 140 | 5.516 |
N314 | 70 | 2.758 | 150 | 5.91 | N315 | 75 | 2.955 | 160 | 6.304 |
N316 | 80 | 3.152 | 170 | 6.698 | N317 | 85 | 3.349 | 180 | 7.092 |
N318 | 90 | 3.546 | 190 | 7.486 | N319 | 95 | 3.743 | 200 | 7.88 |