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Super Precision Angular Contact Ball Bearings 71920 ACE/P4ADBB

Super Precision Angular Contact Ball Bearings 71920 ACE/P4ADBB

The 71920 ACE/P4ADBB is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 13612 lbf and operates smoothly at speeds up to 16000 RPM.

Its 25° contact angle and matched DB arrangement (2 bearings) provide excellent stability for angular loads, while the phenolic cage ensures quiet performance. The light preload (Class B) enhances precision in demanding applications.

This bearing is lubricated for long service life and works in temperatures from -30°C to 110°C. Ideal for high-precision machinery like spindles or CNC equipment where accuracy is key.

Weighing 1.54kg, it meets P4A tolerance standards for reliable performance. Interchangeable with SKF bearings, making replacements straightforward.

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Product Parameters

  • Part Number 71920 ACE/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 24
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 13612 lbf
  • Static Radial Load 13500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.54 kg
Super Precision Angular Contact Ball Bearings 71920 ACE/P4ADBB dimension drawing
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Features

Performance Features of 71920 ACE/P4ADBB Bearing

71920 ACE/P4ADBB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 13612 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 16,000 rpm.
With a matched arrangement of two bearings, it provides stability and precision in demanding conditions.

71920 ACE/P4ADBB Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its P4A tolerance class guarantees high precision, making it suitable for critical applications.

The open design simplifies lubrication, ensuring consistent performance over time.
Weighing just 1.54 kg, it balances strength and ease of handling.

Application

Common Applications of 71920 ACE/P4ADBB Bearing
71920 ACE/P4ADBB Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The light preload and P4A tolerance class make it ideal for applications demanding minimal vibration.

In robotics, 71920 ACE/P4ADBB Bearing supports articulated arms, providing smooth movement and long service life. The matched arrangement of two bearings enhances stability in dynamic operations.

For aerospace components, 71920 ACE/P4ADBB Bearing handles radial and axial loads in systems like landing gear actuators. Its phenolic cage offers durability while reducing friction at high speeds.

Where Is 71920 ACE/P4ADBB Bearing Used?
You’ll often find 71920 ACE/P4ADBB Bearing in CNC machining centres, where precision and speed are critical. The chrome steel construction ensures reliability even under continuous operation.

In electric motors, 71920 ACE/P4ADBB Bearing reduces noise and improves efficiency. The 25° contact angle helps manage combined loads effectively.

Built for Heavy-Duty Use: 71920 ACE/P4ADBB Bearing
71920 ACE/P4ADBB Bearing excels in industrial gearboxes, handling high radial loads with ease. The open design allows for easy lubrication, extending bearing life.

In packaging machinery, 71920 ACE/P4ADBB Bearing ensures consistent performance at high speeds. The matched set configuration provides balanced load distribution.

Automotive vs Aerospace: Applications of 71920 ACE/P4ADBB Bearing
In automotive transmissions, 71920 ACE/P4ADBB Bearing supports smooth gear shifts under angular loads. The metric sizing ensures compatibility with global vehicle designs.

For aerospace applications, 71920 ACE/P4ADBB Bearing is trusted in flight control systems. Its high-speed capability and temperature resistance make it a reliable choice.

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