Description: 10pcs MR83ZZ / MR93ZZ I.D 3mm Ball bearings, double shielded miniature ball bearing. Specification: Bearing material: Chrome Steel(Gcr15). Scroll columns number: Single column. Raceway type: Deep groove raceway. Seal cap: Double sealed. Roll body: Steel ball. Precision grade: P0. Color: Silver Tone. Seals type: Double iron cover. Size: Bore (d) x Diameter (D) x Width (B). 8MM: 3mm x 8mm x 3mm. 9MM: 3mm x 9mm x 4mm. Features: 1. Bearing made from Chrome Steel(Gcr15) for durability and resistance. 2. Mainly take the radial load as well as moderate axial load. 3. Bearing are fitted with two steel dust shields to prevent ingress of dirt and foreign matter, high temperature resistance. 4. Simple configuration, high speed, hight precision, less coefficient of friction, less vibration and noise. 5. These bearings are pre-lubricated with grease. 6. Easy to install and replace. 7. Less friction and higher speed. 8. Durable and Insulation. 9. Widely used in all kinds of industrial equipment, micro motor, small rotary motor, office equipment and so on. Package Included: 10 x Ball Bearings