S6904-2RS Hybrid Ceramic Ball Bearing 20x37x9mm Rubber Sealed

S6904-2RS Hybrid Ceramic Bearing
✔️ Stainless Steel Races with Ceramic Balls

The S6904-2RS is a hybrid ceramic deep groove ball bearing designed for high-speed and long-lasting use. Built with stainless steel races and silicon nitride (Si₃N₄) ceramic balls, it’s sealed on both sides with rubber seals to block out dust and moisture. Pre-lubricated with grease, it’s ready for demanding applications.

✅ Type: Deep groove radial ball bearing
✅ Model: S6904-2RS
✅ Inner diameter: 20mm
✅ Outer diameter: 37mm
✅ Width: 9mm
✅ Balls: Ceramic (Si₃N₄)
✅ Races: Stainless steel
✅ Radial clearance: C0
✅ Closures: Double rubber seals (RS/RS1/2RS1)
✅ Lubrication: Self-lubricated with SRL grease
✅ Quantity: 1 bearing
✅ Equivalent to: 6904-2RS1, 6904-2RZ

💡 Why use hybrid ceramic ball bearings?
Because they blend the toughness of steel races with the advantages of ceramic balls.

• Ceramic balls run cooler and with less friction at high RPM

• Longer service life compared to all-steel bearings

• Perfect for electric motors, robotics, and high-speed tools

If you need a high-speed, low-friction upgrade, the S6904-2RS hybrid ceramic bearing is a reliable choice to keep your setup running smooth.