Miniature Metric Series, Single Row Deep Groove Ball Bearing with Two Seals- (8x28x9 mm)

638-2RS is a 630 miniature series double sealed single row deep groove radial ball bearing with an 8 mm bore, 28 mm outside diameter, and 9 mm width. Designed with a larger miniature bearing profile, precision-ground raceways, and steel balls for stable rotation under light radial loads and light axial loads. Double rubber seals help retain grease inside the bearing and support reliable performance in compact equipment with regular motion. Commonly used in small electric motors, hobby machinery, miniature gearboxes, small rollers, and precision assemblies. Product Specifications: Bearing Type: Single Row Deep Groove Radial Ball Bearing Part Number: 638-2RS Series: 630 Miniature Series Inner Diameter (ID): 8 mm Outer Diameter (OD): 28 mm Width (W): 9 mm Closure Type: Double Rubber Sealed Load Direction: Radial and Light Axial Loads Precision Rating: ABEC 1 Material: Chrome Steel Lubrication: Pre-Lubricated with Grease Applications: Small electric motors Hobby machinery Miniature gearboxes Small rollers Precision assemblies