Miniature Metric Series, Single Row Deep Groove Ball Bearing with Two Shields - (3x8x4 mm)

693-ZZ is a 690 miniature series double shielded single row deep groove radial ball bearing with a 3 mm bore, 8 mm outside diameter, and 4 mm width. Manufactured with precision-ground raceways and steel balls for smooth, low-friction rotation in compact mechanical assemblies. Double metal shields help retain lubricant while keeping running resistance lower than rubber sealed designs, making this bearing suitable for miniature moderate to high-speed applications. Commonly used in small fans, hobby motors, RC equipment, micro pulleys, and precision instruments. Product Specifications: Bearing Type: Single Row Deep Groove Radial Ball Bearing Part Number: 693-ZZ Series: 690 Miniature Series Inner Diameter (ID): 3 mm Outer Diameter (OD): 8 mm Width (W): 4 mm Closure Type: Double Metal Shielded Load Direction: Radial and Light Axial Loads Precision Rating: ABEC 1 Material: Chrome Steel Lubrication: Pre-Lubricated Applications: Small fans Hobby motors RC equipment Micro pulleys Precision instruments