61802-2RS Ceramic Bearing 15x24x5 Si3N4 ABEC-561802 2RS Sealed Ball Bearing ABEC 5 Quality with Si3N4 Ceramic Balls (Silicon Nitride) 15mm x 24mm x 5mm 61802 2RS is double sealed, radial and deep groove ball bearing,61802 2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,bearings is sealed and self lubricated,the quality is set to EMQ (ABEC 5 quality) to ensure high speed,bearings is lubricated with grease. 61802 2RS bearing is made from Chrome