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Super Precision Angular Contact Ball Bearings 71920 ACE/P4A

Super Precision Angular Contact Ball Bearings 71920 ACE/P4A

The 71920 ACE/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 8348 lbf and operates smoothly at speeds up to 18,000 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and low friction. The open design allows for easy lubrication, ensuring long service life even in demanding conditions.

This bearing is ideal for high-precision applications like machine tools or spindle systems, where accuracy and speed are crucial. Its P4 tolerance class ensures reliable performance in critical setups.

Weighing 0.77kg, it’s a robust yet manageable component. Compatible with SKF bearings, it’s a practical choice for replacements or upgrades. Suitable for temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 71920 ACE/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 24
  • Contact Angle 25°
  • 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 8348 lbf
  • Static Radial Load 6750 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 18000 rpm
  • Weight 0.77 kg
  • Price（$） 123.75
Super Precision Angular Contact Ball Bearings 71920 ACE/P4A dimension drawing
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Features

Performance Features of 71920 ACE/P4A Bearing

71920 ACE/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under high dynamic radial loads of 8348 lbf.

The phenolic cage maintains ball alignment, reducing friction and enabling smooth operation at speeds up to 18,000 rpm.
With a P4 tolerance class, 71920 ACE/P4A Bearing delivers consistent precision in demanding environments.

Its open design allows for easy lubrication, extending service life while maintaining performance.
The bearing operates efficiently within a temperature range of -30° to 110°C, suitable for various industrial applications.

Application

Industrial Uses of 71920 ACE/P4A Bearing
71920 ACE/P4A Bearing is commonly used in high-speed machine tools, where its 25° contact angle helps manage both radial and axial loads efficiently. The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

What Makes 71920 ACE/P4A Bearing a Preferred Choice?
In automotive applications like electric motor systems, 71920 ACE/P4A Bearing offers reliable performance due to its chrome steel construction and precise P4 tolerance. Its ability to handle high speeds up to 18,000 rpm makes it ideal for demanding environments.

Perfect Fit for Automation: 71920 ACE/P4A Bearing
For robotic arms and automated production lines, 71920 ACE/P4A Bearing provides smooth motion control thanks to its angular contact design. The lubricated setup ensures long service life even in continuous operation scenarios.

Medical vs Industrial: Where 71920 ACE/P4A Bearing Excels
While 71920 ACE/P4A Bearing is versatile for industrial gearboxes, its precision also suits medical imaging devices where quiet and consistent rotation is essential. The phenolic cage adds durability without compromising performance.

Q&A

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