| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| NATV 6 PPXA | 6 | 19 | 12 |
| NATR 6 PPXA | 6 | 19 | 12 |
| NATR 6 X | 6 | 19 | 12 |
| NATV 6 PPA | 6 | 19 | 12 |
| NATR 6 PPA | 6 | 19 | 12 |
| NATV 5 | 5 | 16 | 12 |
| NATR 5 | 5 | 16 | 12 |
| NATV 5 PPXA | 5 | 16 | 12 |
| NATR 5 PPA | 5 | 16 | 12 |
| NATR 5 X | 5 | 16 | 12 |
| NATR 5 PPXA | 5 | 16 | 12 |
| NATV 5 PPA | 5 | 16 | 12 |
| NRT 850 A | 850 | 1095 | 124 |
| NRT 650 A | 650 | 870 | 122 |
| NRT 580 A | 580 | 750 | 90 |
| NRT 460 A | 460 | 600 | 70 |
| NRT 395 B | 395 | 525 | 65 |
| NRT 325 B | 325 | 450 | 60 |
| NRT 260 B | 260 | 385 | 55 |
| NRT 200 B | 200 | 300 | 45 |
| NRT 180 B | 180 | 280 | 43 |
| NRT 150 B | 150 | 240 | 40 |
| NRT 120 B | 120 | 210 | 40 |
| NRT 100 B | 100 | 185 | 38 |
| NRT 80 B | 80 | 146 | 35 |
| NNU 49/670 BK/SPW33X | 670 | 900 | 230 |
| NNU 49/670 B/SPW33X | 670 | 900 | 230 |
| NNU 49/600 B/SPW33X | 600 | 800 | 200 |
| NNU 49/600 BK/SPW33X | 600 | 800 | 200 |
| NNU 49/500 B/SPW33X | 500 | 670 | 170 |
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