| Inner Diameter | 20 mm |
| Outer Diameter | 47 mm |
| Thickness | 9 mm |
| Models | 61804-2RS1, 61804-2RZ, 61904 |
| Lubrication | Grease or Oil |
| Origin | China |
High-performance deep groove ball bearings with rich stock, 100% on-time delivery, and OEM/ODM service. Suitable for precision machinery requiring low vibration (Z1V1–Z3V3) and reliable grease/oil lubrication. Made in China under trusted brands including NSK, NTN, and Timken.