| Inner Diameter | 4 mm |
| Outer Diameter | 12 mm |
| Thickness | 4 mm |
| Seals Type | ZZ / 2RS / Open |
| Precision Rating | P0, P6, P5, P4, P2 |
| Material | Bearing Steel |
This is a high-precision single-row radial ball bearing (Model: 604-2RS), widely used in small machinery and precision equipment. Features include compact size (4×12×4 mm), multiple sealing options, grease/oil lubrication, and compliance with DIN/ISO/GB/JIS standards. Made in China, OEM/ODM supported.