693 Open Miniature Ball Bearing 3mm Inner Diameter 8mm Outer Diameter 3mm Width Chrome Steel 52100 High Carbon Chromium Durable Precision Bearing for Small Motors RC Drones Robotics Hobby Projects
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693 Open miniature ball bearing 3x8x3 mm, 1 piece
✔️ 3 mm ID x 8 mm OD x 3 mm width, 52100 chrome steel
✔️ 3 mm ID x 8 mm OD x 3 mm width, 52100 chrome steel
This is a small open ball bearing used in precise micro assemblies, hobby projects, RC models, and compact machinery where smooth rotation and tight fit matter.
✅ Inner diameter: 3 mm
✅ Outer diameter: 8 mm
✅ Width: 3 mm
✅ Material: 52100 chrome steel
✅ Quantity: 1 bearing
💡 What is an open miniature ball bearing used for in small mechanical projects? - Handy for tight spaces with micro shafts - Useful for quick lubrication and inspection in compact housings - Common in hobby robotics and micro machinery - 3x8x3 mm size aligns with metric standard