25 models in the NTA series, 6.35–104.775 mm bore. Every row links to the full specification page and to the cross-reference page of that model.
| Model | Brand | Bore d (mm) | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| NTA-3244 | ANDGE | Cross-ref → | |||
| NTA-411 | NSK | 6.35 | 17.45 | 1.984 | Cross-ref → |
| NTA-512 | NSK | 7.925 | 19.05 | 1.984 | Cross-ref → |
| NTA-613 | NSK | 9.525 | 20.625 | 1.984 | — |
| NTA-815 | NSK | 12.7 | 23.8 | 1.984 | Cross-ref → |
| NTA-916 | NSK | 14.275 | 25.4 | 1.984 | — |
| NTA-1018 | NSK | 15.875 | 28.575 | 1.984 | — |
| NTA-1220 | NSK | 19.05 | 31.75 | 1.984 | Cross-ref → |
| NTA-1423 | NSK | 22.225 | 36.5 | 1.984 | Cross-ref → |
| NTA-1625 | NSK | 25.4 | 39.675 | 1.984 | — |
| NTA-1828 | NSK | 28.575 | 44.45 | 1.984 | Cross-ref → |
| NTA-2031 | NSK | 31.75 | 49.2 | 1.984 | Cross-ref → |
| NTA-2233 | NSK | 34.925 | 52.375 | 1.984 | Cross-ref → |
| NTA-2435 | NSK | 38.1 | 55.55 | 1.984 | Cross-ref → |
| NTA-2840 | NSK | 44.45 | 63.5 | 1.984 | Cross-ref → |
| NTA-3244 | NSK | 50.8 | 69.85 | 1.984 | Cross-ref → |
| NTA-3446 | NSK | 53.975 | 73.025 | 1.984 | — |
| NTA-3648 | NSK | 57.15 | 76.2 | 1.984 | Cross-ref → |
| NTA-3650 | NSK | 57.15 | 79.375 | 3.175 | — |
| NTA-4052 | NSK | 63.5 | 82.55 | 1.984 | Cross-ref → |
| NTA-4458 | NSK | 69.85 | 92.075 | 3.175 | — |
| NTA-4860 | NSK | 76.2 | 95.25 | 1.984 | — |
| NTA-5266 | NSK | 82.55 | 104.775 | 3.175 | — |
| NTA-6074 | NSK | 95.25 | 117.475 | 3.175 | — |
| NTA-6681 | NSK | 104.775 | 128.575 | 3.175 | — |
NTA series bearings follow the ISO dimension plan for this family, so a given number is dimensionally interchangeable between brands - see the cross-reference to confirm. Choose the suffix for your duty: shields for dry, clean positions, contact seals for wet or dusty ones, and a larger clearance class where the fit or temperature demands it.
Other Needle Roller Bearings series: K · RNA · NA · HK · NK · BK · KT · IR