Sealed Miniature Ball Bearing 5x12x4 52100 Chrome Steel With Double Sided Rubber Seals Pre Lubricated Greased For Low Friction Small Machinery And Hobby Projects Ideal For RC Vehicles And Robotics Applications With Precision Housings And Machinery

These compact sealed bearings fit in tight spaces like RC models, tiny gearboxes, and hobby gadgets, delivering smooth rotation and dust protection.

✅ inner diameter 5 mm, outer diameter 12 mm, width 4 mm
✅ material: 52100 chrome steel
✅ two rubber seals, dust protection
✅ pre-lubricated with grease
✅ quantity: 1 bearing per pack

💡 What is a small sealed ball bearing used for and why is it handy in compact gear? This handy bearing is used to support rotating parts in tight spaces while keeping dust out and requiring minimal maintenance. - Handy for micro motors, RC parts, and compact gear boxes - Sealed design protects from dust and moisture, boosting lifespan - Pre-lubricated for immediate use and smooth operation