Specification Brand : uxcell BulletPoint1 : BU0840 (I.D.=8mm, O.D.=40mm, Thickness=20.5mm) BulletPoint2 : BU0840 bearings are shielded on both sides to keep lubricant in BulletPoint3 : Chromium Steel long-life bearings, smooth and low noise BulletPoint4 : ABEC Tolerance 1 (P0), Z1 Noise Level for most general use BulletPoint5 : Can be used to build the track system or replace the wheel, widely used in door and window to track, or drive mechanical equipment. Color : Black ExpectedPlantHeight : 10 millimeters ExternallyAssignedProductIdentifier : 7612018353967 ExternallyAssignedProductIdentifier1 : 792117427374 ExternallyAssignedProductIdentifier2 : 0792117427374 IncludedComponents : NO ItemName : uxcell 6pcs U Type Groove Pulley Black Nylon Guide Rolling Bearing 8x40x20.5mm U Groove Roller Wheel for Door Window or Drive Mechanical Equipment ItemPackageDimensions_Height : 13.589 centimeters ItemPackageDimensions_Length : 2.5908 centimeters ItemPackageDimensions_Width : 10.6934 centimeters ItemPackageQuantity : 6 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : uxcell Material : Chrome Steel (GCr15) , Nylon ModelNumber : klf220517zz0073 NumberOfItems : 6 PartNumber : a23112300ux0292 ProductDescription : NOTE: Please refer to the picture and select right type of bearings before your order (Sealed or Shield on BOTH or SINGLE side of the bearing). Suffix on the bearing just for differentiating between Sealed and Shield type of bearing. It would not affect the use of our product. Description:
Single-row, pre-lubricated, normal accuracy. 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. With small friction and high-limit speed, Ball Bearings are cost-effective and require little maintenance. Chromium Steel (GCr15) made with heat treating, provides high and uniform hardness, good wear resistance Can be used to build the track system or replace the wheel, widely used in door and window to track, or drive mechanical equipment.
Selection Guide: Shields (Designation Suffix Z/ZZ) - High speed. Protect from dirt and debris. Sealed (Designation Suffix RS/2RS) - Made of sheet steel reinforced nitrile butadiene rubber (oil- and liquid-resistant). Lower limit speed than Shield Bearings.