B12-40D-2RS Alternator Bearing 12x40x12mm Sealed 12mm Bore Bearing

B12-40D-2RS AB Sealed Ball Bearing
✔️ Chrome Steel Deep Groove Bearing 12mm x 40mm x 12mm

This B12-40D-2RS AB deep groove bearing is a handy sealed unit made from durable 52100 chrome steel, giving you smooth rotation and long service life in motors, gear assemblies, and general machinery. It comes pre-greased and ready to install.

✅ Inner diameter 12mm
✅ Outer diameter 40mm
✅ Width 12mm
✅ Rubber seals on both sides
✅ 52100 chrome steel construction
✅ Pre-lubricated with grease
✅ One bearing included

💡 Why are sealed deep groove ball bearings popular for general-purpose machinery?
Their tight sealing and simple design keep motion smooth with low upkeep.
- Rubber seals help block dust and moisture
- Deep raceways handle steady radial loads
- Great for motors, tools, and everyday mechanical builds

This B12-40D-2RS AB bearing delivers clean, steady rotation so your equipment runs smooth and dependable.