Sealed Ball Bearing 20x37x9mm Deep Groove Chrome Steel 52100 Alloy Durable Precision Bearing With Inner Diameter 20mm Outer Diameter 37mm And Width 9mm Ideal For Machinery And Equipment Applications

20x37x9 mm Sealed Ball Bearing, 1 piece, Chrome Steel 6904UU
✔️ 20 mm bore, 37 mm outer diameter, 9 mm width; sealed and greased

The 6904UU is a standard deep groove ball bearing built from chrome steel 52100, pre-lubricated with grease and sealed with rubber seals. It's a compact, reliable choice for hobby machines, RC gears, and light industrial setups where smooth rotation matters.

✅ Sealed with rubber seals to keep grease in and dirt out
✅ Chrome steel 52100 for hard wear and long life
✅ Pre-lubricated with grease, ready to install
✅ Size 20 x 37 x 9 mm, standard 6904UU dimensions

💡 What is a sealed ball bearing used for in everyday machinery? This handy component keeps motion smooth across many machines. - Supports radial loads in compact spaces - Handles light axial loads in rotating shafts - Rubber seals help retain lubricant and block contaminants - Chrome steel offers good wear resistance for longer life