| Bearing No. | Main dimensions | |||
| d | d Tolerance | D | D Tolerance | |
| NA204 | 20 | 0 +0.018 | 47 | 0 -0.011 | NA203 | 17 | 0 +0.015 | 47 | 0 -0.011 |
| NA202 | 15 | 0 +0.015 | 47 | 0 -0.011 | NA201 | 12 | 0 +0.015 | 47 | 0 -0.011 |
| NA204-12 | 19.05 | 0 +0.015 | 47 | 0 -0.011 | NA202-10 | 15.875 | 0 +0.015 | 47 | 0 -0.011 |
| NA201-8 | 12.7 | 0 +0.015 | 47 | 0 -0.011 |