Miniature Metric Series, Single Row Deep Groove Bearing, Open - (3 x 8 x 4 mm)

693 is a 690 miniature series open single row deep groove radial ball bearing with a 3 mm bore, 8 mm outside diameter, and 4 mm width. Built with a compact thin-section profile, precision-ground raceways, and steel balls for smooth rotation in small shaft assemblies. The open construction allows direct lubrication access and is best suited for protected housings or miniature mechanisms with scheduled lubrication. Commonly used in micro motors, RC equipment, model assemblies, compact robotics, and precision mechanisms. Product Specifications: Bearing Type: Open Single Row Deep Groove Radial Ball Bearing Part Number: 693 Series: 690 Miniature Series Inner Diameter (ID): 3 mm Outer Diameter (OD): 8 mm Width (W): 4 mm Closure Type: Open Load Direction: Radial and Light Axial Loads Precision Rating: ABEC 1 Material: Chrome Steel Lubrication: Requires Application Lubrication Applications: Micro motors RC equipment Model assemblies Compact robotics Precision mechanisms