Specification Brand : Othmro BulletPoint : Angular Contact Bearings BulletPoint1 : 【Size】-Bore(Inner Dia):8mm/0.31inch;Outer Diametre:12mm/0.47inch;Width(Thickness):3.5mm/0.14inch;Model:SMR128C-2OS;Material:440C+Ceramic Ball;Quality Level:ABEC-7 BulletPoint2 : 【High Quality】-The bearings is made of bearing steel for durability and resistance to rust, corrosion and deformity under heavy loads BulletPoint3 : 【Smooth Operation】-The deep grove bearing is stable and smooth operation, good mute effect, practical and durable BulletPoint4 : 【Strictly Shielded】-The Roller guide bearing has shield to keep lubricant in and contaminants out;protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan BulletPoint5 : 【Application】-Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment,robotics,dental equipment, elevators, rolling mills, ship rudder shafts, aggregate crushers,skateboards,inline skates,and scooters, among others Color : One Color ExternallyAssignedProductIdentifier : 7395688992345 ItemName : Othmro SMR128C-2OS Deep Groove Bearings Double Sealed Ball Bearing 440C+Ceramic Ball Roller Guide Bearing Deep-Groove Ball Bearings for Scooters Elevators Ship Rudder Shafts 8x12x3.5mm ItemPackageDimensions_Height : 7.62 centimeters ItemPackageDimensions_Length : 0.508 centimeters ItemPackageDimensions_Width : 4.064 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : Othmro Material : Ceramic,Material,Steel ModelNumber : a19092900ux0048 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : OTH1930Z-0004 ProductDescription : Description: Single-row, pre-lubricated, high 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. The limit speed of hybrid ceramic ball bearing can reach more than 1.3 times of chrome steel bearing of the same model. Hybrid bearing features stronger rust and corrosion resistance ability to withstand destruction caused by humidity and some other media. Suitable for work in high temperature environment and would not harm by magnetism or electricity. Suitable for all kinds of industrial equipment, micro motor, engine and fishing reel.