691 Bearing Open 1x4x1.6mm Miniature Micro Ball Bearing UCP211 ✅ Housing number: FC207

✅ Housing number: FC207

✅ Balls made from zirconia ceramic (ZrO₂) for speed and low heat

7210BBNLS outer diameter is 90mm

Designed to reduce friction and boost smooth casting

The S687ZZ is a high-performance deep groove ball bearing combining stainless steel races with premium Si3N4 (silicon nitride) ceramic balls

691 Bearing Open 1x4x1.6mm Miniature Micro Ball Bearing UCP211 ✅ Housing number: FC207691 Open Miniature Ball Bearing 1mm x 4mm x 1. 6mm High Precision The 691 open deep groove miniature ball bearing is designed for ultra compact applications where precision and high speed are key. Made from durable 52100 chrome steel, its open design allows for easy lubrication and low friction performance in micro mechanical setups. Pack size: 1 bearing. Inner Diameter (ID): 1mm Outer Diameter (OD): 4mm Width: 1. 6mm Type: Deep groove miniature ball