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The 729 ACD/P4A is a super precision angular contact ball bearing with a 9mm bore and 26mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and is designed for angular loads, handling up to 893 lbf dynamically.
Its open design and phenolic cage ensure smooth operation at speeds up to 90,000 RPM, making it suitable for high-speed applications. The bearing comes preloaded and matched for better performance in paired arrangements.
Ideal for precision machinery like spindles or CNC equipment, it operates efficiently in temperatures from -30°C to 110°C. Weighing just 0.02kg, it’s lightweight yet durable.
Compatible with SKF bearings, it offers a reliable replacement option. Its P4 tolerance class ensures exceptional accuracy for demanding tasks.
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Why Choose 729 ACD/P4A Bearing for Precision Tasks?
729 ACD/P4A Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability and smooth operation under dynamic radial loads up to 893 lbf.
The phenolic cage maintains ball alignment, reducing friction and noise during high-speed rotation.
With a maximum speed of 90,000 rpm, it delivers reliable performance in demanding conditions.
Its P4 tolerance class (ABEC-7) guarantees precision, making it suitable for sensitive equipment.
The compact 9 mm×26 mm×8 mm size allows easy integration into space-constrained designs.
Industrial Uses of 729 ACD/P4A Bearing
The 729 ACD/P4A Bearing is commonly used in high-speed machine spindles, where its angular contact design handles both radial and axial loads efficiently. Its P4 precision rating ensures minimal vibration, ideal for CNC machining centres.
In automotive applications, 729 ACD/P4A Bearing supports components like turbochargers and electric motor shafts, thanks to its 25° contact angle. The phenolic cage offers quiet operation, making it suitable for hybrid vehicle systems.
For medical imaging devices, 729 ACD/P4A Bearing’s chrome steel construction provides durability in high-rotation scenarios. The open design allows for custom lubrication, extending service life in sensitive equipment.
Automation systems benefit from 729 ACD/P4A Bearing’s matched arrangement, ensuring consistent performance in robotic arms. Its lightweight design reduces inertia, improving response times in precision tasks.
In consumer electronics, 729 ACD/P4A Bearing is found in high-end turntables and optical drives, where smooth rotation is key. The lubricated design minimises maintenance, perfect for long-lasting home appliances.
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