685-2RS Ultra-Miniature Sealed Bearing

The 685-2RS ultra-miniature sealed bearing, with its exquisitely compact dimensions, stands as a paragon among Small bearings. As a prime example of our diverse Small bearing offerings, its double-sided contact rubber seal (2RS) structure, crafted from high-performance fluororubber, adheres seamlessly to the bearing's inner and outer rings via a precision molding process. Boasting an IP67 protection rating, it functions as an impenetrable barrier, effectively repelling dust particles, liquids, and oil contaminants. Whether deployed in moisture-laden food processing facilities where Stainless steel bearings are often favored for their corrosion resistance, or debris-filled electronic manufacturing workshops, it safeguards the integrity of internal precision components, significantly mitigating the risk of equipment failure and reducing maintenance costs associated with contamination.​

Constructed from high-carbon chromium bearing steel of equivalent quality to Stainless steel bearings, the 685-2RS undergoes a meticulous sequence of vacuum quenching, tempering, and deep cryogenic treatment. This process elevates its surface hardness to HRC60 - 62, forming a dense, wear-resistant layer that confers exceptional abrasion and corrosion resistance, much like the robust properties of Stainless steel bearings. As a distinguished member of the Ball bearing family, it integrates precision-grade G10 steel balls with the classic symmetrical deep groove raceway design characteristic of Deep groove ball bearings. Rigorous mechanical testing and advanced simulation optimization have verified its ability to sustain a radial load of 0.65kN and an axial load of 0.23kN. With a friction coefficient as low as 0.004, it operates with remarkable efficiency, registering a vibration value ≤6m/s² and a noise level ≤40dB even at high rotational speeds of 15,000 r/min. These attributes make it an ideal choice for powering the precision steering systems of micro unmanned aerial vehicles and the core transmission components of smart wearable devices, highlighting the versatility of Ball bearings and Deep groove ball bearings in modern applications.​

For projects with unique specification requirements, our Non-standard bearing customization service offers comprehensive support, spearheaded by a team of seasoned engineers. Leveraging state-of-the-art CAD/CAM design systems, we deliver tailored solutions that encompass material property enhancement, innovative sealing structure design, and precise tolerance control. Whether you need a bearing with specialized dimensions, unique material combinations, or custom sealing features, our Non-standard bearing service ensures that your specific needs are met. In the context of micro water pump applications, the 685-2RS ultra-miniature sealed bearing has demonstrated exceptional resilience. Subjected to simulated high-frequency start-stop cycles and continuous vibration tests, it exhibits a dynamic load coefficient (C) of 0.8kN and maintains a bearing clearance variation ≤0.005mm after 1200 hours of continuous operation. This performance rivals that of specialized Water pump bearings, ensuring the sustained and reliable operation of micro water pump systems. Its ability to perform under such demanding conditions showcases the reliability and adaptability of our bearings, even in applications typically reserved for dedicated Water pump bearings.​

From the intricate realm of micro precision instruments to the forefront of industrial automation, the 685-2RS ultra-miniature sealed bearing, with its unparalleled performance, collaborates seamlessly with our comprehensive product portfolio. Alongside our Stainless steel bearing, Ball bearing, Deep groove ball bearing, Non-standard bearing, Small bearing, and Water pump bearing offerings, they provide an unwavering foundation for mechanical operations, propelling industries towards new frontiers of efficiency and stability.