21300-series
Model list for the 21300-series spherical roller bearings: bore, outer diameter and width with seal and clearance options. Open a model for full specs and verified equivalents.
51 models 40–110 mm bore range Full / partial / verify match grading
| Model | d (mm) | D (mm) | B (mm) | Seal | Clearance | Cross refs |
|---|---|---|---|---|---|---|
| 21322 | 110 | 240 | 50 | open | CN | 2 |
| 21308C | 40 | 90 | 23 | open | CN | 1 |
| 21308CK | 40 | 90 | 23 | open | CN | 1 |
| 21309C | 45 | 100 | 25 | open | CN | 1 |
| 21309CK | 45 | 100 | 25 | open | CN | 1 |
| 21310C | 50 | 110 | 27 | open | CN | 1 |
| 21310CK | 50 | 110 | 27 | open | CN | 1 |
| 21311-NTN | 55 | 120 | 29 | open | CN | 3 |
| 21311K | 55 | 120 | 29 | open | CN | 1 |
| 21312-NTN | 60 | 130 | 31 | open | CN | 3 |
| 21312K | 60 | 130 | 31 | open | CN | 1 |
| 21313-NTN | 65 | 140 | 33 | open | CN | 3 |
| 21313K | 65 | 140 | 33 | open | CN | 1 |
| 21314-NTN | 70 | 150 | 35 | open | CN | 3 |
| 21314K | 70 | 150 | 35 | open | CN | 1 |
| 21315-NTN | 75 | 160 | 37 | open | CN | 3 |
| 21315K | 75 | 160 | 37 | open | CN | 1 |
| 21316-NTN | 80 | 170 | 39 | open | CN | 3 |
| 21316K | 80 | 170 | 39 | open | CN | 1 |
| 21317-NTN | 85 | 180 | 41 | open | CN | 3 |
| 21317K | 85 | 180 | 41 | open | CN | 1 |
| 21318-NTN | 90 | 190 | 43 | open | CN | 3 |
| 21318K | 90 | 190 | 43 | open | CN | 1 |
| 21319-NTN | 95 | 200 | 45 | open | CN | 3 |
| 21319K | 95 | 200 | 45 | open | CN | 1 |
| 21320-NTN | 100 | 215 | 47 | open | CN | 3 |
| 21320K | 100 | 215 | 47 | open | CN | 1 |
| 21322-NTN | 110 | 240 | 50 | open | CN | 2 |
| 21322K | 110 | 240 | 50 | open | CN | 1 |
| 21310 | 50 | 110 | 27 | open | CN | 4 |
| 21311 | 55 | 120 | 29 | open | CN | 5 |
| 21312 | 60 | 130 | 31 | open | CN | 5 |
| 21313 | 65 | 140 | 33 | open | CN | 5 |
| 21314 | 70 | 150 | 35 | open | CN | 5 |
| 21315 | 75 | 160 | 37 | open | CN | 5 |
| 21316 | 80 | 170 | 39 | open | CN | 5 |
| 21317 | 85 | 180 | 41 | open | CN | 5 |
| 21318 | 90 | 190 | 43 | open | CN | 5 |
| 21319 | 95 | 200 | 45 | open | CN | 5 |
| 21320 | 100 | 215 | 47 | open | CN | 4 |
| 21310-EK | 50 | 110 | 27 | open | CN | 1 |
| 21311-EK | 55 | 120 | 29 | open | CN | 2 |
| 21312-EK | 60 | 130 | 31 | open | CN | 2 |
| 21313-EK | 65 | 140 | 33 | open | CN | 2 |
| 21314-EK | 70 | 150 | 35 | open | CN | 2 |
| 21315-EK | 75 | 160 | 37 | open | CN | 2 |
| 21316-EK | 80 | 170 | 39 | open | CN | 2 |
| 21317-EK | 85 | 180 | 41 | open | CN | 2 |
| 21318-EK | 90 | 190 | 43 | open | CN | 2 |
| 21319-EK | 95 | 200 | 45 | open | CN | 2 |
| 21320-EK | 100 | 215 | 47 | open | CN | 2 |