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S61904-2RS Bearing 20x37x9 Si3N4 Ceramic Sealed ABEC-5 Bearings
| S61904-2RS Sealed Ball Bearing Premium ABEC-5 Quality with Si3N4 Ceramic Balls (Silicon Nitride) 20mm x 37mm x 9mm |
S61904-2RS is double sealed, radial, deep groove ball bearing,S61904-2RS bearing is made from stainless steel with Ceramic Balls (Si3N4) and Nylon cage,S61904-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,S61904-2RS bearing is sealed and self lubricated,the quality is set to EMQ (Premium ABEC-5 quality) to ensure high speeds,S61904-2RS bearing is lubricated with grease.
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💡 What Does ABEC-5 Mean?
ABEC-5 is a precision rating from the Annular Bearing Engineers’ Committee (ABEC), indicating that the bearing is manufactured with tighter tolerances for improved accuracy and performance.
Bearings rated ABEC-5 are designed for high-speed, low-friction operation, making them ideal for electric motors, precision tools, 3D printers, and performance equipment where smooth rotation and long service life are essential.