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The 688 is a compact miniature ball bearing with an 8mm bore and 16mm outer diameter, crafted from durable chrome steel. It supports radial loads up to 239 lbf and spins smoothly at speeds up to 36,000 RPM.
Its open design simplifies lubrication, while the stainless steel cage ensures reliable performance. The bearing operates well in temperatures ranging from -30°C to 110°C.
With a lightweight build at just 3.11g, it’s ideal for small applications like hobby motors or precision instruments. Compliant with RoHS and REACH standards, it’s a safe and practical choice for various uses.
The ABEC1 tolerance and MC3 radial clearance make it suitable for general-purpose tasks where moderate precision is needed.
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Why Choose 688 Bearing for Precision Tasks?
688 Bearing is precision-engineered with chrome steel rings and balls, ensuring smooth and accurate performance.
Its compact size of 8 mm×16 mm×4 mm makes it ideal for applications where space is limited.
The stainless steel cage maintains ball alignment, reducing friction and wear during operation.
With a maximum speed of 36,000 rpm, it delivers reliable performance in high-speed applications.
688 Bearing’s dynamic radial load capacity of 239 lbf ensures durability under stress.
Its ABEC1 tolerance class guarantees consistent precision for demanding tasks.
Common Applications of 688 Bearing
In industrial settings, 688 Bearing is frequently used in small machinery like electric motors and pumps, where its compact size and radial load capacity are beneficial. The open design simplifies lubrication, ensuring smooth operation over time.
Where Is 688 Bearing Used?
You’ll often find 688 Bearing in automotive applications such as alternators and small gearboxes, thanks to its durability and precise tolerances. Its metric sizing makes it a versatile fit for various vehicle models.
Perfect Fit for Automation: 688 Bearing
For robotics and automation, 688 Bearing works well in lightweight robotic arms and conveyor systems, providing reliable performance. The chrome steel construction ensures longevity even with frequent use.
Medical vs Industrial: Where 688 Bearing Excels
In medical devices like dental tools or lab equipment, 688 Bearing offers quiet and precise movement. Meanwhile, in industrial settings, it handles radial loads efficiently in compact machinery.
Light-Duty vs Heavy-Duty: Best Uses for 688 Bearing
For light-duty tasks like small fans or printers, 688 Bearing delivers smooth rotation with minimal maintenance. In heavier applications, its stainless steel cage adds durability under consistent loads.
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