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Super Precision Angular Contact Ball Bearings 71920 CD/P4ADFB

Super Precision Angular Contact Ball Bearings 71920 CD/P4ADFB

The 71920 CD/P4ADFB is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from durable chrome steel. It features a 15° contact angle and comes in a matched set of two bearings arranged back-to-back.

This bearing handles radial loads up to 21938 lbf and operates smoothly at speeds up to 16000 RPM. Its phenolic cage ensures quiet performance, while the light preload (Class B) provides stability for precision applications.

The open design allows for easy lubrication and maintenance. Suitable for temperatures from -30°C to 110°C, it’s ideal for high-precision machinery like spindles or CNC equipment.

Weighing 1.6kg, this bearing is interchangeable with SKF models, making it a reliable choice for replacements. Its P4A tolerance class ensures exceptional accuracy for demanding tasks.

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Product Parameters

  • Part Number 71920 CD/P4ADFB
  • 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 26
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings >< DF
  • 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 21938 lbf
  • Static Radial Load 29700 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.6 kg
Super Precision Angular Contact Ball Bearings 71920 CD/P4ADFB dimension drawing
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Features

How Is 71920 CD/P4ADFB Bearing Engineered for Reliability?

71920 CD/P4ADFB Bearing features a 15° contact angle, optimised for handling combined radial and axial loads.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 21938 lbf, it performs reliably under demanding conditions.
The P4A tolerance class guarantees high precision, making it suitable for critical applications.

Designed for speeds up to 16,000 rpm, it balances performance and longevity.
The matched arrangement of two bearings enhances stability and load distribution.

Application

Industrial Uses of 71920 CD/P4ADFB Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability in demanding industrial environments.

Where Is 71920 CD/P4ADFB Bearing Used?
You’ll find it in automotive applications like high-performance gearboxes, where its light preload and P4A tolerance class enhance smooth operation. The chrome steel construction also makes it durable under heavy radial loads.

Perfect Fit for Automation: 71920 CD/P4ADFB Bearing
In robotic arms and CNC machines, this bearing’s phenolic cage reduces friction for smoother movement. Its high-speed capability (up to 16,000 rpm) makes it ideal for precision automation tasks.

Medical vs Industrial: Where 71920 CD/P4ADFB Bearing Excels
While it’s reliable in medical imaging devices, its true strength lies in industrial settings like grinding machines. The open design allows for easy lubrication, extending its service life in continuous operations.

Key Fields for 71920 CD/P4ADFB Bearing
Aerospace applications benefit from its lightweight yet robust design, particularly in actuator systems. The 15° contact angle ensures optimal load distribution during high-speed rotations.

Q&A

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