NNU4921K
| d | 105 | mm | Bore diameter |
| D | 145 | mm | Outside diameter |
| B | 40 | mm | Width |
| FW | 117 | mm | Raceway diameter of inner ring |
| r (min.) | 1.1 | mm | Chamfer dimension |
| Cr | 198000 | N | Basic dynamic load rating |
| C0r | 315000 | N | Basic static load rating |
| Grease | 3800 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 4800 | min-1 | Oil-bath lubrication |
| da (min.) | 111.5 | mm | Diameter of shaft abutment |
| da (max.) | 116 | mm | Diameter of shaft abutment |
| dc (min.) | 120 | mm | Diameter of shaft abutment |
| d1a (min.) | 113 | mm | Diameter of spacer sleeve abutment |
| Da (max.) | 138.5 | mm | Diameter of housing abutment |
| ra (max.) | 1 | mm | Radius of shaft or housing fillet |
| (approx.) | 1.99 | kg |