| Inner Diameter | 2.5 mm |
| Outer Diameter | 6 mm |
| Thickness | 2.6 mm |
| Model | W638/2.5-2Z 623 623-2RS1 |
| Lubrication | Grease or Oil |
| Origin | China |
High-precision miniature deep groove ball bearing with rich stock, 100% on-time delivery, and OEM/ODM support. Features high-grade grease technology, low vibration (Z1V1–Z3V3), and versatile shipping options. Suitable for precision instruments and compact machinery.