Specification Brand : uxcell BulletPoint : 7/8 BulletPoint1 : 6706ZZ (I.D.=30mm, O.D.=37mm, Thickness=4mm) BulletPoint2 : 6706-2Z bearings are shielded on BOTH SIDES to keep lubricant in BulletPoint3 : Made from Chromium Steel (GCr15), durability and resistance to under heavy loads BulletPoint4 : ABEC Tolerance 1 (P0), Z2 Noise Level for most general use BulletPoint5 : Static load rating of 947 newtons and dynamic load rating of 1140 newtons ExternallyAssignedProductIdentifier1 : 793200412994 ExternallyAssignedProductIdentifier2 : 0793200412994 ExternallyAssignedProductIdentifier3 : 00793200412994 ItemName : uxcell 6706ZZ Deep Groove Ball Bearings Z2 30mm x 37mm x 4mm Double Shielded Chrome Steel 2pcs ItemPackageDimensions_Height : 14.7 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 9.6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : uxcell Material : Steel ModelNumber : a19101000ux0376 NumberOfItems : 2 PartNumber : a19101000ux0376 ProductDescription : Description: -These ceramic bearing balls are great for applications were there will be extreme rotation and a premium performance bearing ball is required to meet the demands. -Lighter and stronger than tungsten carbide, these silicon nitride balls are diamond polished, will not shatter or melt in the extreme conditions. -Higher hardness than chrome steel balls. Vickers hardness up to 1700HV. -Specially useful for casters, drawer slides, door locks and many other applications.
Suitable for a range of purposes, some of the most common are listed below: -1/8" is often used for clusters and old English-style headsets -1/4" is often used for rear wheels and bottom brackets -3/16" is often used for front wheels -5/32" is often used for headsets with pressing cups