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The SF691 is a small radial ball bearing with a 1mm bore and 4mm outer diameter, crafted entirely from stainless steel for durability. It handles radial loads up to 24 lbf and spins at impressive speeds of up to 90,000 RPM.
Its open design requires regular lubrication but allows for easy maintenance. The stainless steel cage ensures smooth operation and longevity, even in demanding conditions.
With a compact width of just 1.6mm and a lightweight 0.14g build, it fits snugly in tight spaces. The flange adds stability, making it easier to install securely.
Ideal for precision devices like small motors or medical instruments where high-speed performance is needed. Works reliably in temperatures from -30°C to 110°C and meets RoHS and REACH standards.
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How Does SF691 Bearing Achieve High-Speed Performance?
SF691 Bearing is crafted with stainless steel rings and balls, ensuring smooth operation at speeds up to 90,000 rpm.
Its single-row design and precise radial clearance of 0.002mm to 0.013mm enhance stability during high-speed rotation.
The stainless steel cage maintains ball alignment, reducing friction and wear.
With a dynamic radial load capacity of 24 lbf, SF691 Bearing delivers reliable performance in compact applications.
SF691 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its lightweight design at just 0.14g makes it ideal for precision instruments requiring minimal weight.
Where Is SF691 Bearing Used?
SF691 Bearing is commonly used in small precision instruments, such as watch movements and miniature motors, where its compact size and high-speed capability are ideal. The stainless steel construction ensures durability in delicate applications.
In automation systems, SF691 Bearing supports tiny robotic arms and micro actuators, providing smooth rotation with minimal friction. Its open design allows for easy lubrication, extending service life in continuous operation.
For medical devices like dental tools or endoscopic equipment, SF691 Bearing’s high-speed performance and corrosion resistance make it a reliable choice. The ABEC1 tolerance ensures consistent accuracy in critical procedures.
In consumer electronics, SF691 Bearing can be found in small cooling fans or miniature drones, where its lightweight and efficiency are key. The flange design adds stability, preventing misalignment during high-speed rotation.
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