N304W
| d | 20 | mm | Bore diameter |
| D | 52 | mm | Outside diameter |
| B | 15 | mm | Width |
| EW | 44.5 | mm | Raceway diameter of outer ring |
| r (min.) | 1.1 | mm | Chamfer dimension |
| r1 (min.) | 0.6 | mm | Chamfer dimension |
| Cr | 26300 | N | Basic dynamic load rating |
| C0r | 17300 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 14000 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Grease | 10000 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 12000 | min-1 | Oil-bath lubrication |
| da (min.) | 26.5 | mm | Diameter of shaft abutment |
| Db (min.) | 46 | mm | Diameter of housing abutment |
| Db (max.) | 48 | mm | Diameter of housing abutment |
| ra (max.) | 1 | mm | Radius of shaft or housing fillet |
| rb (max.) | 0.6 | mm | Radius of shaft or housing fillet |
| (approx.) | 0.148 | kg |