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The 728 AC is a compact angular contact ball bearing, measuring 8mm by 24mm by 8mm, with a 25° contact angle for handling combined loads. It comes in sealed or open options and is preloaded for better stability.
Made from steel or ceramic balls and a nylon/phenolic cage, it offers smooth operation and durability. The bearing supports dynamic radial loads up to 1011 lbf and spins up to 60,000 RPM with grease or 90,000 RPM with oil.
Its universal matching design simplifies installation, while the ABEC-5/P5 or ABEC-25/P4 precision ratings ensure reliable performance. Ideal for high-speed applications like small motors or precision tools.
Weighing just 17 grams, it’s lightweight yet robust for its size. The lubricated version reduces maintenance needs, making it a practical choice for demanding setups.
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Why Choose 728 AC Bearing for Precision Tasks?
728 AC Bearing features a 25° contact angle, making it ideal for precision angular contact applications.
Its ABEC-5 and ABEC-25 ratings ensure high accuracy and smooth operation in demanding conditions.
The choice of steel or ceramic balls allows for flexibility in performance and durability.
With dynamic radial load capacity of 1011.65 lbf, it handles both speed and load efficiently.
Sealed and open options provide versatility for different lubrication and maintenance needs.
The lightweight design at 0.017 kg makes it suitable for compact and high-speed machinery.
Common Applications of 728 AC Bearing
728 AC Bearing is widely used in precision machinery like small electric motors and dental handpieces, where its compact size and angular contact design are ideal. The sealed option helps keep contaminants out, extending the bearing’s life in dusty environments.
Where Is 728 AC Bearing Used?
You’ll often spot 728 AC Bearing in robotics, particularly in joint mechanisms that require smooth, precise movement. Its universal matching feature simplifies installation, making it a go-to for automated systems.
Optimized for Performance: 728 AC Bearing
In high-speed spindles, 728 AC Bearing’s ceramic ball option reduces friction, allowing for faster rotations without overheating. The ABEC-5 rating ensures consistent accuracy for demanding applications.
Light-Duty vs Heavy-Duty: Best Uses for 728 AC Bearing
For light-duty tasks like model-making tools, 728 AC Bearing’s nylon cage offers quiet operation. In heavier applications, the phenolic cage provides extra strength without adding much weight.
Perfect Fit for Automation: 728 AC Bearing
728 AC Bearing works well in 3D printers, where its low friction and high-speed capability ensure precise layer deposition. The lubricated design means less maintenance, even with continuous use.
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