The SW 684-2RS is an essential miniature deep groove ball bearing designed for applications requiring high precision and exceptional speed in extremely limited space. With precise dimensions of 4mm bore, 9mm outer diameter, and 4mm width, this extra-light series bearing (680 series) provides minimal weight and reduced friction compared to standard profile alternatives. The '2RS' designation confirms it is equipped with two low-friction, synthetic rubber seals (Buna N/NBR) on both sides, ensuring superior protection against dust, moisture, and contaminants while retaining high-quality, long-life grease within the raceway. It is highly suitable for delicate equipment such as medical devices, precision sensors, RC models, and small electric motors operating under moderate radial loads.
Constructed from high-grade 52100 bearing steel, the SW 684-2RS delivers reliable, durable performance necessary for maintaining operational continuity in demanding industrial settings. The optimized internal geometry and precision tolerances (ABEC-1 or better) minimize vibration and heat generation, maximizing both rotational speed capability and overall service life. Choosing SW ensures a consistent, high-quality component that reduces maintenance cycles and associated downtime, providing significant long-term value over generic substitutes. This component is pre-lubricated and ready for immediate installation.
Key Features
Equipped with 2RS seals for maximum protection against contaminants and moisture.
Extra-light 680 series design for weight reduction and use in space-constrained applications.
Constructed from durable 52100 Chrome Steel for extended operational life and resistance to fatigue.
Pre-lubricated with high-performance grease for maintenance-free operation.
High limiting speed suitable for small motors, robotics, and high-speed rotary tools.
