19 models in the KRA series, 50.8–304.8 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) | |
|---|---|---|---|---|---|
| KRA020 | NTN | 50.8 | 63.5 | 6.35 | — |
| KRA025 | NTN | 63.5 | 76.2 | 6.35 | — |
| KRA030 | NTN | 76.2 | 88.9 | 6.35 | — |
| KRA035 | NTN | 88.9 | 101.6 | 6.35 | — |
| KRA040 | NTN | 101.6 | 114.3 | 6.35 | — |
| KRA042 | NTN | 107.95 | 120.65 | 6.35 | — |
| KRA045 | NTN | 114.3 | 127 | 6.35 | — |
| KRA047 | NTN | 120.65 | 133.35 | 6.35 | — |
| KRA050 | NTN | 127 | 139.7 | 6.35 | — |
| KRA055 | NTN | 139.7 | 152.4 | 6.35 | — |
| KRA060 | NTN | 152.4 | 165.1 | 6.35 | — |
| KRA065 | NTN | 165.1 | 177.8 | 6.35 | — |
| KRA070 | NTN | 177.8 | 190.5 | 6.35 | — |
| KRA075 | NTN | 190.5 | 203.2 | 6.35 | — |
| KRA080 | NTN | 203.2 | 215.9 | 6.35 | — |
| KRA090 | NTN | 228.6 | 241.3 | 6.35 | — |
| KRA100 | NTN | 254 | 266.7 | 6.35 | — |
| KRA110 | NTN | 279.4 | 292.1 | 6.35 | — |
| KRA120 | NTN | 304.8 | 317.5 | 6.35 | — |
KRA 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 Custom & Special Bearings series: 62 · 685 · 63 · 60 · SNV · K · BND · 697