Description:Most widely used type of bearing in the world, save cost and versatile useLow operating temperature, and low friction -- a longer expected working lifeCan operate at high speeds and can carry radial and (limited) axial loadsCommonly used in electric motors, compressors, fans, and conveyorsWidely applied in agricultral, food processing, machine tool, printing and wind energy, etcSpecification:6304: Outer ring diameter: 50mm; inner ring diameter: 20mm; bearing thickness: 15mm6305: Outer ring diameter: 60mm; inner ring diameter: 25mm; bearing thickness: 18mm6306: Outer ring diameter: 60mm; inner ring diameter: 25mm; bearing thickness: 18mm6307: Outer ring diameter: 80mm; inner ring diameter: 35mm; bearing thickness: 20mmPackage Includes:1 Piece Deep Groove Ball Bearing