694 Bearing | Open / ZZ / RS Seals | Corrosion-Resistant Materials And Precision Uses

The 694 bearing is a standard thin-section deep groove ball bearing engineered for compact micro mechanical systems. It delivers consistent rotary smoothness, low operational noise and reliable dynamic stability under continuous running. With three practical sealing options and multi-grade metal material configurations, this versatile micro bearing fits diverse precision, dry, humid and corrosive working environments for miniature industrial and commercial equipment.

694 Bearing Seal Type Characteristics

694 Open Bearing: Features a non-sealed open frame structure with maximum ventilation and zero rotary resistance. It enables fast heat dissipation and easy on-site lubrication refilling, supporting sustained ultra-high-speed operation. Ideal for controlled clean working environments, including precision robotic parts, micro rotary fixtures and high-speed electronic transmission units.

694ZZ Bearing (Double Metal Shields): Adopts dual-sided non-contact metal barrier shields, effectively blocking fine dry dust, powder residues and airborne particles. This low-resistance design preserves original running speed and provides stable heat resistance, perfect for dry indoor applications such as small drive motors, precision measuring tools and smart consumer electronic devices.

694RS Bearing (Double Rubber Seals): Built with dual lip contact rubber seals for enhanced comprehensive protection against moisture ingress, water splashes and fine dust contamination. It eliminates frequent maintenance needs and adapts to fluctuating ambient conditions, widely used in outdoor intelligent devices, humid workshop equipment and automated precision accessory systems.

694 Bearing Material Properties And Application Fields

Bearing Steel: Standard industrial bearing alloy with excellent rigidity, extreme abrasion resistance and stable load-bearing capacity. Featuring outstanding durability and cost efficiency, it is the mainstream choice for general machinery, micro motor components and conventional industrial precision transmission parts.

304 Stainless Steel: Offers excellent everyday rust-proof and oxidation resistance, with stable mechanical performance in normal humid environments. It is an economical and practical option for consumer electronics, light industrial machinery and general indoor & outdoor low-load equipment.

420 Stainless Steel: Combines high hardness, strong structural toughness and mild chemical corrosion resistance. It maintains precise and smooth rotation under long-term light-load operation, suitable for optical instruments, portable medical devices and high-end precision micro machinery.

440 Stainless Steel: Boasts ultra-high hardness and superior wear resistance, with excellent tolerance to medium corrosive conditions. It ensures long-term stable operation for precision automation components, hydraulic matching parts and industrial high-stability transmission systems.

316 Stainless Steel: Features premium salt spray, acid and alkali corrosion resistance, as well as high-temperature oxidation stability. It is specially designed for harsh working scenarios, widely applied in marine equipment, food machinery, chemical instruments and medical sanitary equipment.

Core Advantages: The 694 thin-wall micro bearing supports diversified sealing and material customization, featuring low noise, smooth rotation, high precision and strong environmental adaptability. It covers consumer electronics, industrial automation, medical sanitation, marine and chemical industries, satisfying various compact precision transmission demands.