4x7x2.5mm Ceramic Shielded Ball Bearing Miniature With Double Metal ZZ Shields Pre Lubricated Grease Chrome Steel 52100 Core High Load Low Friction Precision For RC Models Drones And Small Machinery

Mini 4x7x2.5 mm Ceramic Shielded Bearing, 1pc
✔️ 4x7x2.5 mm ceramic shielded bearing, ZZ seals, greased, 1pc

Compact ceramic shielded ball bearing sized 4x7x2.5 mm, designed for tiny motors, drones, and precision gear assemblies. It comes pre-lubricated and features double shields to keep out dust and dirt, using a robust 52100 chrome steel race.

✅ Inner diameter: 4 mm
✅ Outer diameter: 7 mm
✅ Width: 2.5 mm
✅ Material: ceramic hybrid with steel race (52100 chrome steel)
✅ Shielding: double metal shields (ZZ) for dust protection
✅ Lubrication: factory pre-lubricated grease

💡 What is a small ceramic shielded bearing used for in handy projects?

Here's a handy overview. - Handy for compact devices to reduce friction and wear - Great in micro motors, 3D printers, drones, and precision sliders - Shielded design guards against dust and debris, boosting bearing life