UB-689/4-B3 - STANDARD BEARING MEASURE (9 x 16 x 4mm) B3 -- COD. ( 689 / 4 (no seal) - 9 16 4 - 9164 - 9x16x4 )

Key featuresMiniature 689/4 high-precision ball bearingCompact size: 9 x 16 x 4 mmOpen version (no seals)Minimal friction for maximum smoothnessIdeal for high-speed applications DescriptionThe UB-689/4-B3 is a miniature deep groove ball bearing designed for precision and low-friction applications.Its compact size (9 x 16 x 4 mm) makes it ideal for systems requiring high rotational efficiency and minimal resistance.The open design (no seals) allows freer and faster rotation, making it suitable for applications where lubrication is externally managed.Manufactured from high-strength steel with precision-ground raceways, it ensures smooth operation, low vibration and consistent performance. SpecificationsType: miniature deep groove ball bearingModel: 689/4Dimensions: 9 x 16 x 4 mmSeals: open (no seal)Material: high-strength chrome steelStructure: single rowLoad type: radial with limited axial supportApplication: high-speed, low-friction use CompatibilityEquivalent codes: 689/4, 9164, 9x16x4Used in precision mechanical componentsSuitable for motors, pulleys, rollers and compact assembliesApplications: cycling, electronics, RC models, instrumentsIdeal replacement open miniature bearing