61801RS1 ボールベアリング12x21x5mm -Sealed

61801RS1 Double Sealed Ball Bearing - Chrome Steel
✔️ 12mm x 21mm x 5mm - Sealed on Both Sides - Ready to Install

The 61801RS1 is a compact deep groove ball bearing built for speed, smooth motion, and long service life. Featuring double rubber seals, this bearing keeps out dust and debris while holding in grease, making it ideal for RC wheels, electric motors, and other tight-tolerance applications.

✅ Inner Diameter (ID): 12mm
✅ Outer Diameter (OD): 21mm
✅ Width: 5mm
✅ Type: Deep groove ball bearing
✅ Material: Chrome steel
✅ Closures: Double rubber seals (RS1)
✅ Lubrication: Pre-lubricated with grease
✅ Dynamic Load Rating (Cr): 1,920 N
✅ Static Load Rating (Cor): 1,040 N
✅ Max Speed (grease): 20,000 RPM
✅ Quantity: 1 bearing

💡 Why use double-sealed chrome steel bearings in compact applications?
They offer excellent resistance to contaminants and retain lubrication better, reducing wear and extending service life - especially in high-speed, low-clearance environments like RC motors and lightweight robotics.

このベアリングは、コンパクトな形状で信頼性が必要な場合に最適です！