Shielded 7x14x5mm、グリース潤滑済み、Shields 、Chrome Steel 、精密ホビー機械や小型モーターに最適

1x 7x14x5mm Shielded Miniature Ball Bearing 687ZZ
✔️ 1 bearing pack with double shields, chrome steel 52100, grease ready for instant use

This compact bearing is ideal for small hobby projects, RC models, and precision hardware where space is tight but smooth operation matters. It ships pre-lubricated and shielded to resist dust and contamination, making setup quick and easy in tight assemblies.

✅ Inner diameter 7 mm, Outer diameter 14 mm, Width 5 mm
✅ Material: Chrome steel (52100 alloy) for durability
✅ Shield: Double metal ZZ shields for dust protection
✅ Pre-lubricated with grease; dynamic load rating Cr 1150 N, static Cor 510 N; max RPM 45,000

💡 What is a ball bearing used for in small mechanical assemblies?

In tiny projects, ball bearings provide smooth rotation and reliable load handling. - Compact, handy for hobby robotics and model gear - Low friction for smoother operation in small shafts - Shielded design resists dust and contamination