The FR166 is an inch-series flanged deep groove ball bearing with a 3/16" (4.762mm) bore, 9.525mm OD, and 3.175mm width . Its integrated flange (10.72mm outer diameter) simplifies mounting . This compact bearing offers a dynamic load rating of 710 N and supports high speeds (50,000 rpm grease / 60,000 rpm oil) . It is commonly used in small motors, precision instruments, and medical devices .
