
639, 639Z, 639ZZ, 639RS, 639-2RS Ball Bearings 9x30x10mm – Deep Groove Bearings for Industrial & Mechanical Applications
639, 639Z, 639ZZ, 639RS, 639-2RS Ball Bearings 9x30x10mm – Deep Groove Bearings for Industrial & Mechanical Applications
Complete 639 series deep groove ball bearings in standard size 9mm (ID) × 30mm (OD) × 10mm (W), available in multiple configurations for reliable performance in industrial, automotive, and mechanical systems:
Made from high-quality chrome steel (GCr15), all models feature precision-ground raceways for smooth, low-noise operation and long service life under radial loads and moderate to high speeds. Widely used in electric motors, pumps, fans, gearboxes, compressors, conveyors, agricultural machinery, and industrial equipment.
Most sealed versions are pre-lubricated with high-performance grease for maintenance-free operation. The 639 series supports both radial and limited axial loads, making it a versatile solution for OEMs, replacements, and repair applications.
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