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Super Precision Angular Contact Ball Bearings 71920 ACB/P4A

Super Precision Angular Contact Ball Bearings 71920 ACB/P4A

The 71920 ACB/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from chrome steel for durability. It handles radial loads up to 4568 lbf and operates smoothly at speeds up to 17,000 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 tool spindles or high-speed motors. Its P4 tolerance class ensures reliable performance where accuracy is crucial.

Weighing 0.85kg, it’s robust yet manageable for its size. Compatible with SKF bearings, it’s a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 71920 ACB/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 7.938 mm
  • Ball Qty 37
  • 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 4568 lbf
  • Static Radial Load 4770 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 17000 rpm
  • Weight 0.85 kg
  • Price（$） 123.66
Super Precision Angular Contact Ball Bearings 71920 ACB/P4A dimension drawing
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Features

Performance Features of 71920 ACB/P4A Bearing

71920 ACB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 4568 lbf, it handles demanding conditions reliably.

The P4 tolerance class guarantees high precision, making it suitable for critical applications.

Application

Where Is 71920 ACB/P4A Bearing Used?
71920 ACB/P4A Bearing is commonly used in high-speed machine tools, where its 25° contact angle ensures smooth operation under radial and axial loads. The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

In automotive systems, 71920 ACB/P4A Bearing supports components like wheel hubs and transmissions, where precision and durability are key. Its P4 tolerance class ensures consistent performance even under demanding conditions.

For automation equipment, 71920 ACB/P4A Bearing’s high-speed capability makes it ideal for robotic arms and CNC machines. The chrome steel construction provides long-lasting reliability in continuous operation.

In medical imaging devices, 71920 ACB/P4A Bearing’s precision helps maintain accurate positioning for clear scans. The lubricated design reduces maintenance needs, making it a practical choice for healthcare settings.

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