6904 Hybrid Ceramic Bearing 20*37*9 mm ABEC-1 1PC Bicycle Bottom Brackets & Spares 6904RS 6904-2RS Si3N4 Ball Bearings

Surface Roughness Ra 0.05. Torque Capacity 20379 mm. Structure Si3N4 Balls. Model Number 6904 Hybid Ceramic Bearing. Coatings Chrome Steel. Material Hybrid Ceramic. Brand Name NoEnName_Null. modname=ckeditor. WHAT IS A HYBEID CERAMIC BEARING?. A ceramic hybrid bearing is a combination of ceramic balls and bearing quality steel rings. Which combine hardened steel rings with rolling elements made of high-performance ceramic materials, are an increasingly popular option for demanding applications. TECHNICAL SPECS. Model: 6904 RS. Structure: Deep Groove Ball. Material: Hybrid Ceramic. Bore Dia d): 20 mm. Outer Dia D): 37. mm. Width B): 9. mm. Closures: Sealed 2RS). Lubrication: Grease. Clearance: C0. Weight: 0.044 kg. Quantity: 1 Lot 1 PC. Special Note: 1, Sometimes the cages will be different. e. g. 67 series thin-walled bearings, because the inner wall is very thin, will use the crown-shaped iron cage. 2, the grease and sealed are accept custom-made, so sometimes there are different co