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Super Precision Angular Contact Ball Bearings 729 CD/P4A

Super Precision Angular Contact Ball Bearings 729 CD/P4A

The 729 CD/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 15° contact angle and is designed for angular contact loads, handling up to 922 lbf dynamically.

With a maximum speed of 100,000 RPM, it spins smoothly and efficiently. The open design and phenolic cage ensure durability and easy maintenance, while the P4 tolerance class guarantees high precision.

This bearing is ideal for applications requiring tight tolerances, such as machine tools or high-speed spindles. Its compact size (9mm×26mm×8mm) and lightweight (0.02kg) make it suitable for precision equipment.

Compatible with SKF bearings, it offers a reliable replacement option. The operating temperature range of -30°C to 110°C ensures performance in various environments.

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Product Parameters

  • Part Number 729 CD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 9 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 26 mm
  • Outer Dia Tolerance -0.005mm to 0
  • Width 8 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 9
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 922 lbf
  • Static Radial Load 374 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 100000 rpm
  • Weight 0.02 kg
  • Price（$） 95.841
Super Precision Angular Contact Ball Bearings 729 CD/P4A dimension drawing
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Features

Why Choose 729 CD/P4A Bearing for Precision Tasks?

729 CD/P4A Bearing features a 15° contact angle, optimising load distribution for high-precision applications.
Its chrome steel construction ensures durability and consistent performance under dynamic radial loads up to 922 lbf.

The phenolic cage maintains ball alignment, reducing friction and noise during high-speed operation.
With a maximum speed of 100,000 rpm, it delivers reliable efficiency in demanding conditions.

729 CD/P4A Bearing operates smoothly within a temperature range of -30° to 110°C.
Its P4 tolerance class (ABEC-7) guarantees exceptional accuracy for precision instruments.

Application

Common Applications of 729 CD/P4A Bearing
In machine tools, 729 CD/P4A Bearing handles high-speed spindle rotations with precision, thanks to its 15° contact angle and P4 tolerance. The open design ensures efficient lubrication, extending service life in demanding industrial settings.

Where Is 729 CD/P4A Bearing Used?
You’ll often spot 729 CD/P4A Bearing in automotive transmissions, where its angular contact design manages combined loads smoothly. The phenolic cage reduces friction, making it a quiet performer in gear-driven systems.

Optimized for Performance: 729 CD/P4A Bearing
For robotics, 729 CD/P4A Bearing offers the accuracy needed for articulated arms, with a max speed of 100,000 rpm. Its chrome steel construction balances durability and lightweight performance in automated workflows.

Medical vs Industrial: Where 729 CD/P4A Bearing Excels
In medical imaging devices, 729 CD/P4A Bearing’s low vibration ensures clear scans, while its industrial use in pumps highlights reliability. The 9-ball design distributes loads evenly across applications.

Perfect Fit for Automation: 729 CD/P4A Bearing
729 CD/P4A Bearing shines in 3D printers, where its preload option minimises play for precise layer deposition. The metric sizing simplifies integration into European and Asian machinery designs.

Q&A

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