Enduro 6803 Zero Ceramic Bearing

Enduro 6803 Zero Ceramic Bearing Looking to spin smoother? Have less resistance and ultimately go faster? Well; the Enduro 6803 Zero Ceramic Bearing is what you need. To be used on either the hubs or bottom bracket; the ceramic bearings are of high Grade 3 quality for assured durability and performance. The ceramic bearing balls and steel races are made up of ceramic Silicon Nitride-Si3n4 and the races are further treated with black oxide. Finished off with a ground toa mirror treatment that reduces wear and prevents corrosion. Performance wise allows for practically perfect efficiency and tolerances. Coming onto the ABEC scale with a rating of 5. The ABEC system relates to the tolerances of the bearings. There are five levels from largest to smallest tolerances; 1; 3; 5; 7; and 9. The higher the ABEC number the better precision; efficiency and the greater speed capabilities. This does not guarantee components spin faster though. The Grade rating is based on the manufacturing quality of the bearing balls; this ultimately results in its geometric tolerances. Grades range from 2000 to 3. The lower the number the higher the precision. Enduro use Grade 3 for the Zero; making them the highest quality bearing balls. Keeping the unit together are VV seals. These comprise of two NBR 70 rubber seals with a non-contact seal; which rides in a matching groove machined into the bearing resulting in no drag or friction. Kyodo Yushi PS-2 is a high-quality grease that is made up of a protective interface that is applied between the ceramic balls and metal races. It has been used due to its high-speed make-up and low rolling resistance. For a larger ceramic bearing; the Enduro 6903 Zero Ceramic Bearing would be more suitable. Features Bearing Code: 6803 Dimensions: 17mm x 26mm x 5mm ABEC: 5 Grade: 3 Seals: VV Grease: Kyodo Yushi PS-2 To be used with hubs and bottom brackets Weight: 6.85g