Specification Brand : HL Electronic Business BulletPoint1 : Size: 683ZZ (Inner Dia.=3mm, Outer Dia.=7mm, Thickness=3mm) BulletPoint2 : Shields on BOTH SIDES of the bearing to keep dust out. Suitable for high speed operation BulletPoint3 : Carbon steel long-life bearings, smooth and low noise BulletPoint4 : ABEC Tolerance 1 (P0) for most general use BulletPoint5 : Pre-Lubricated, Easy to maintain ExternallyAssignedProductIdentifier : 6446174327231 ItemName : 683ZZ Deep Groove Ball Bearing Double Shield 683-2Z, 3mm x 7mm x 3mm Carbon steel Bearings (Pack of 20) ItemPackageDimensions_Height : 9.2 centimeters ItemPackageDimensions_Length : 0.6 centimeters ItemPackageDimensions_Width : 5.8 centimeters ItemPackageQuantity : 20 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : HL Electronic Business Material : Carbon Steel ModelNumber : 623zz NumberOfItems : 20 PartNumber : 683 ProductDescription : Description: Deep Groove Ball Bearings are one of the most widely used rolling bearings. They are used to accommodate radial and axial loads in both directions. Suitable for all kinds of industrial equipment, micro motor, small rotary motor, office equipment and so on. With small friction and high-limit speed, Deep Groove Ball Bearings are cost-effective and require little maintenance. Carbon steel made with heat treating, provides high and uniform hardness, good wear resistance and high contact fatigue performance. Single-row, pre-lubricated, normal accuracy.