R188ZZ
| d | 6.35 | mm | Bore diameter |
| D | 12.7 | mm | Outside diameter |
| B | 4.762 | mm | Width |
| r (min.) | 0.15 | mm | Chamfer dimension |
| Cr | 1190 | N | Basic dynamic load rating |
| C0r | 440 | N | Basic static load rating |
| Grease | 40000 | min-1 | Grease lubrication |
| db (max.) | 7.4 | mm | Diameter of shaft abutment |
| Db (max.) | 11.7 | mm | Diameter of housing abutment |
| ra (max.) | 0.15 | mm | Radius of shaft or housing fillet |
| (approx.) | 0.00224 | kg |