W637/4X-2z & W638/4X-2RS1 High-Speed Stable Deep Groove Ball Bearings
Basic Info.
| Inner Diameter | 4 mm |
|---|---|
| Outer Diameter | 10 mm |
| Thickness | 4 mm |
| Model | W637/4X-2Z, W638/4R-2Z, W638/4X-2RS1 |
| Lubrication | Grease or Oil |
| Origin | China |
Introduction
High-performance miniature ball bearings with rich stock, 100% on-time delivery, and OEM/ODM support. Designed for precision applications requiring low vibration (Z1V1–Z3V3) and reliable grease/oil lubrication. Certified with HS Code 8482102000.
























