W638/4R-2Z W638/4X-2RS1 W638/4X-2Z Deep Groove Ball Bearing – High Quality Factory Wholesale
Basic Info.
| Inner Diameter | 4 mm |
| Outer Diameter | 10 mm |
| Thickness | 4 mm |
| Model | W638/4R-2Z / W638/4X-2RS1 / W638/4X-2Z |
| Lubrication | Grease or Oil |
| Origin | China |
Introduction
High-performance miniature deep groove ball bearings with rich stock, 100% on-time delivery, and OEM/ODM support. Suitable for precision instruments, motors, and automation equipment. Grease technology rated “High”, vibration grades Z1V1–Z3V3, packaged in carton pallets.
























