N305W
| d | 25 | mm | Bore diameter |
| D | 62 | mm | Outside diameter |
| B | 17 | mm | Width |
| EW | 53 | mm | Raceway diameter of outer ring |
| r (min.) | 1.1 | mm | Chamfer dimension |
| r1 (min.) | 1.1 | mm | Chamfer dimension |
| Cr | 36000 | N | Basic dynamic load rating |
| C0r | 25200 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 12000 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Grease | 8000 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 10000 | min-1 | Oil-bath lubrication |
| da (min.) | 31.5 | mm | Diameter of shaft abutment |
| Db (min.) | 55 | mm | Diameter of housing abutment |
| Db (max.) | 55.5 | mm | Diameter of housing abutment |
| ra (max.) | 1 | mm | Radius of shaft or housing fillet |
| rb (max.) | 1 | mm | Radius of shaft or housing fillet |
| (approx.) | 0.233 | kg |