R4-2RS Deep Groove Ball Bearing

In the dynamic realm of industrial motion, the R4-2RS Deep groove ball bearing emerges as a compact powerhouse within our expansive bearing portfolio. Measuring 4mm in inner diameter, 9mm in outer diameter, and 4mm in width, this miniature marvel firmly establishes itself as a prime example of our Small bearing offerings, while embodying the core characteristics that make Deep groove ball bearings indispensable across countless applications.​

 

The R4-2RS is a testament to meticulous engineering. Its double - rubber seal (2RS) structure, crafted from high - performance nitrile rubber, forms an airtight and watertight barrier when integrated with the bearing's inner and outer rings. Certified to IP67 standards, it provides unparalleled protection against dust, moisture, and contaminants, ensuring the integrity of internal components even in the harshest of environments. This robust sealing mechanism, combined with its precision - engineered symmetrical deep groove raceway design, allows the bearing to operate with minimal frictional resistance. It can maintain smooth rotations at speeds of up to 20,000 revolutions per minute, while stably handling a radial load of 0.35kN and an axial load of 0.12kN, making it a reliable choice for high - precision, high - speed micro - transmission systems.​

 

Constructed from high - carbon chromium bearing steel of the same superior quality as our Stainless steel bearing lineup, the R4-2RS undergoes a series of advanced manufacturing processes. Vacuum quenching, tempering, and deep cryogenic treatment elevate its surface hardness to HRC60 - 62, creating a dense wear - resistant layer that offers exceptional abrasion and corrosion resistance. As a classic Ball bearing, it features precision - grade G10 steel balls that roll smoothly within the deep groove raceways, ensuring efficient power transmission and long - term reliability.​

 

For projects with unique requirements, our Non - standard bearing customization service is ready to transform challenges into solutions. Whether you need modifications to the seal material for chemical resistance, adjustments to the internal clearance for high - temperature applications, or custom - sized dimensions to fit specialized equipment, our team of experienced engineers, equipped with state - of - the - art CAD/CAM design systems, will work closely with you. In the context of micro - water pump applications, the R4-2RS has proven its mettle. Simulating the demanding conditions of continuous operation and high - frequency vibrations, it achieves a dynamic load coefficient (C) of 0.4kN. After 1000 hours of rigorous testing, the bearing clearance variation remains within ≤0.003mm, demonstrating stability on par with our specialized Water pump bearing offerings. This makes it an excellent choice for ensuring the long - term, stable, and efficient operation of micro - water pump systems, whether in residential water filtration devices or compact industrial pumping units.​

From the intricate mechanisms of precision instruments and miniature motors to the specialized requirements of customized machinery, the R4-2RS Deep Groove Ball Bearing, with its outstanding performance, seamlessly integrates with our comprehensive range of bearings. Together with our Stainless steel bearing, Ball bearing, Deep groove ball bearing, Non - standard bearing, Small bearing, and Water pump bearing products, we are dedicated to providing reliable, high - quality solutions that drive the success of your projects, no matter how challenging the application may be.