366 models with a 50 mm bore in this type, with outer diameter and width. Outer diameters on this page run from 55 mm to 110 mm.
| Model | Brand | Type | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| RNA4910 | IKO | Needle Roller Bearings | 72 | 22 | Cross-ref → |
| RNA4910 | INA | Needle Roller Bearings | 72 | 22 | Cross-ref → |
| RNA4910 RS | ANDGE | Needle Roller Bearings | 72 | 23 | — |
| RNA4910.2 RS | ANDGE | Needle Roller Bearings | 72 | 23 | Cross-ref → |
| RNA6910 | IKO | Needle Roller Bearings | 72 | 40 | Cross-ref → |
| RNA6910 | SKF | Needle Roller Bearings | 72 | 40 | Cross-ref → |
| RNA6910 | INA | Needle Roller Bearings | 72 | 40 | Cross-ref → |
| RNA6910A | FAG | Needle Roller Bearings | 72 | 40 | Cross-ref → |
| AXW 50 | ANDGE | Needle Roller Bearings | 73 | 4.2 | Cross-ref → |
| AXW 50 | SKF | Needle Roller Bearings | 73 | 3 | Cross-ref → |
| 50FSF75 | NSK | Needle Roller Bearings | 75 | 35 | — |
| KB50 | INA | Needle Roller Bearings | 75 | 100 | Cross-ref → |
| KBO50 | INA | Needle Roller Bearings | 75 | 100 | — |
| KBS50 | INA | Needle Roller Bearings | 75 | 100 | — |
| KS50 | INA | Needle Roller Bearings | 75 | 100 | — |
| KSO50 | INA | Needle Roller Bearings | 75 | 100 | — |
| GTRI 507745 | IKO | Needle Roller Bearings | 77 | 45 | — |
| TRI 507745 | IKO | Needle Roller Bearings | 77 | 45 | — |
| NAF 507820 | IKO | Needle Roller Bearings | 78 | 20 | — |
| NAFW 507840 | IKO | Needle Roller Bearings | 78 | 40 | — |
| NAO 50×78×20 | ANDGE | Needle Roller Bearings | 78 | 20 | — |
| NAO 50×78×60 | ANDGE | Needle Roller Bearings | 78 | 60 | — |
| NAO50x78x20 | ANDGE | Needle Roller Bearings | 78 | 20 | — |
| 50FSF80 | NSK | Needle Roller Bearings | 80 | 42 | — |
| NA4010 | ANDGE | Needle Roller Bearings | 80 | 30 | — |
| NAV 4010 | ANDGE | Needle Roller Bearings | 80 | 30 | Cross-ref → |
| NAVP4010X2 | ANDGE | Needle Roller Bearings | 80 | 28 | — |
| NKIS 50 | SKF | Needle Roller Bearings | 80 | 28 | Cross-ref → |
| NKIS 50 | ANDGE | Needle Roller Bearings | 80 | 28 | Cross-ref → |
| NKIS50 | ANDGE | Needle Roller Bearings | 80 | 28 | Cross-ref → |
| RSTO 40 | ANDGE | Needle Roller Bearings | 80 | 19.8 | Cross-ref → |
| RSTO40 | ANDGE | Needle Roller Bearings | 80 | 19.8 | Cross-ref → |
| STO 40 | ANDGE | Needle Roller Bearings | 80 | 19.8 | Cross-ref → |
| 50KBE02 | NACHI | Needle Roller Bearings | 90 | 49 | — |
| 50KBE22 | NACHI | Needle Roller Bearings | 90 | 55 | — |
| FYCJ-50 | NSK | Needle Roller Bearings | 90 | 32 | — |
| FYCJS-50 | NSK | Needle Roller Bearings | 90 | 32 | — |
| FYCR-50 | NSK | Needle Roller Bearings | 90 | 32 | — |
| FYCRS-50 | NSK | Needle Roller Bearings | 90 | 32 | — |
| NA2210.2RS | ANDGE | Needle Roller Bearings | 90 | 22.7 | — |
| NATR 50 | ANDGE | Needle Roller Bearings | 90 | 30 | Cross-ref → |
| NATR50 | NTN | Needle Roller Bearings | 90 | 32 | Cross-ref → |
| NATR50LL/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NATR50X | NTN | Needle Roller Bearings | 90 | 32 | — |
| NATR50XLL/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NATV50/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NATV50LL/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NATV50X/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NATV50XLL/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NAV 610 | ANDGE | Needle Roller Bearings | 90 | 35 | — |
| NUTR210/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NUTR210X/3AS | NTN | Needle Roller Bearings | 90 | 32 | — |
| NUTR50DZ | ANDGE | Needle Roller Bearings | 90 | 32 | — |
| NUTW210/3AS | NTN | Needle Roller Bearings | 90 | 38 | — |
| NUTW210X/3AS | NTN | Needle Roller Bearings | 90 | 38 | — |
| RNA2210 2RS | ANDGE | Needle Roller Bearings | 90 | 23 | — |
| RNA2210 2RSX | ANDGE | Needle Roller Bearings | 90 | 23 | — |
| ZARN 5090 L TV | ANDGE | Needle Roller Bearings | 90 | 78 | — |
| ZGN5010133 | ANDGE | Needle Roller Bearings | 101.2 | 28 | — |
| ZGN5010138EW | ANDGE | Needle Roller Bearings | 101.2 | 28 | — |
| 50KBE03 | NACHI | Needle Roller Bearings | 110 | 64 | — |
| 50KDE13 | NACHI | Needle Roller Bearings | 110 | 64 | — |
| NA310 | ANDGE | Needle Roller Bearings | 110 | 49.2 | Cross-ref → |
| NUTR310/3AS | NTN | Needle Roller Bearings | 110 | 32 | — |
| NUTR310X/3AS | NTN | Needle Roller Bearings | 110 | 32 | — |
| NUTR50110 | ANDGE | Needle Roller Bearings | 110 | 32 | Cross-ref → |
The bore is the shaft diameter, so it is the one dimension you cannot change: pick the bore first, then decide the type from the load and speed, then the outer diameter from the housing you have. If the housing is fixed, filter by outer diameter in the product center. For fits and shaft tolerances see the fit recommendations.