NTN 6403 Small Size Ball Bearing Standard Precision Deep Groove Ball Bearing For Machinery And Industrial Equipment High Load Capacity Durable Steel Cage Low Friction Smooth Operation And Long Lifespan

NTN 6403 small size ball bearing, standard grade
✔️ Single bearing, 40x90x23 mm, standard NTN grade precision

This NTN 6403 is a compact deep groove ball bearing used for general purpose rotary motion in small machinery and automation components. It’s a common replacement in light-duty motors, fans, conveyors, and gear assemblies where space is tight and smooth rotation matters.

✅ Bearing type: deep groove ball bearing (standard)
✅ Dimensions: bore 40 mm, outer diameter 90 mm, width 23 mm
✅ Material: chrome steel bearing grade
✅ Pack: single bearing in the package
✅ Typical uses: motors, gearboxes, pulleys, conveyors

💡 What is a small ball bearing used for in everyday machinery?

They’re handy for reducing friction and supporting rotating shafts. - Reduces friction between moving parts for smooth rotation - Supports radial loads in rotating components like motors and gearboxes - Available in standard metric size 40x90x23 mm for easy replacement