Precision Chrome Steel 6708ZZ Bearings for Sewing Machines
Durable single-row deep groove design with 40x50x6mm dimensions ensures smooth, low-friction rotation in high-speed applications. Hardened chrome steel construction and double-sealed (2Z) shields provide superior dust/contaminant resistance for extended lifespan. Precision-ground raceways and polished balls reduce vibration, ideal for industrial sewing machines, textile equipment, and small machinery. Strict ISO-certified manufacturing guarantees ±0.005mm tolerance for flawless performance under heavy loads. Buy wholesale at unbeatable global prices – bulk discounts available for factories and repair workshops. （Note: Strictly adheres to professional technical specs, omits fluff, and aligns with Western e-commerce brevity standards.）