47 models in the 213 series, 20–120 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) | |
|---|---|---|---|---|---|
| 21304E | NACHI | 20 | 52 | 15 | — |
| 21305E | NACHI | 25 | 62 | 17 | — |
| 21306AX | NACHI | 30 | 72 | 19 | — |
| 21306E | NACHI | 30 | 72 | 19 | — |
| 21306RH | KOYO | 30 | 72 | 19 | — |
| 21307AX | NACHI | 35 | 80 | 21 | — |
| 21307E | NACHI | 35 | 80 | 21 | — |
| 21307RH | KOYO | 35 | 80 | 21 | — |
| 21308AX | NACHI | 40 | 90 | 23 | — |
| 21308E | NACHI | 40 | 90 | 23 | Cross-ref → |
| 21308RH | KOYO | 40 | 90 | 23 | — |
| 21309AX | NACHI | 45 | 100 | 25 | — |
| 21309E | NACHI | 45 | 100 | 25 | Cross-ref → |
| 21309RH | KOYO | 45 | 100 | 25 | — |
| 21310AX | NACHI | 50 | 110 | 27 | — |
| 21310E | NACHI | 50 | 110 | 27 | Cross-ref → |
| 21310RH | KOYO | 50 | 110 | 27 | — |
| 21311AX | NACHI | 55 | 120 | 29 | — |
| 21311EX1 | NACHI | 55 | 120 | 29 | — |
| 21311RH | KOYO | 55 | 120 | 29 | — |
| 21312AX | NACHI | 60 | 130 | 31 | — |
| 21312EX1 | NACHI | 60 | 130 | 31 | — |
| 21312RH | KOYO | 60 | 130 | 31 | — |
| 21313AX | NACHI | 65 | 140 | 33 | — |
| 21313EX1 | NACHI | 65 | 140 | 33 | — |
| 21313RH | KOYO | 65 | 140 | 33 | — |
| 21314AX | NACHI | 70 | 150 | 35 | — |
| 21314EX1 | NACHI | 70 | 150 | 35 | — |
| 21314RH | KOYO | 70 | 150 | 35 | — |
| 21315AX | NACHI | 75 | 160 | 37 | — |
| 21315EX1 | NACHI | 75 | 160 | 37 | — |
| 21315RH | KOYO | 75 | 160 | 37 | — |
| 21316AX | NACHI | 80 | 170 | 39 | — |
| 21316EX1 | NACHI | 80 | 170 | 39 | — |
| 21316RH | KOYO | 80 | 170 | 39 | — |
| 21317AX | NACHI | 85 | 180 | 41 | — |
| 21317EX1 | NACHI | 85 | 180 | 41 | — |
| 21317RH | KOYO | 85 | 180 | 41 | — |
| 21318AX | NACHI | 90 | 190 | 43 | — |
| 21318EX1 | NACHI | 90 | 190 | 43 | — |
| 21318RH | KOYO | 90 | 190 | 43 | — |
| 21319RH | KOYO | 95 | 200 | 45 | — |
| 21320RH | KOYO | 100 | 215 | 47 | — |
| 21322AX | NACHI | 110 | 240 | 50 | — |
| 21322EX1 | NACHI | 110 | 240 | 50 | — |
| 21322RH | KOYO | 110 | 240 | 50 | — |
| 21324E | NACHI | 120 | 260 | 55 | — |
213 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 Cylindrical Roller Bearings series: NU · NJ · N · NUP · NN · FC · NNU · LSE