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Super Precision Angular Contact Ball Bearings 71911 CD/P4ADFB

Super Precision Angular Contact Ball Bearings 71911 CD/P4ADFB

The 71911 CD/P4ADFB is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and comes in a matched set of two bearings arranged back-to-back (DF).

This bearing handles radial loads up to 7020 lbf and reaches speeds of 34,000 RPM, thanks to its phenolic cage and lubricated design. Its light preload (Class B) ensures smooth operation with minimal friction.

The open seal allows for easy maintenance, while the P4A tolerance class guarantees high precision. It performs reliably in temperatures from -30°C to 110°C.

Ideal for applications like machine tool spindles or high-speed robotics, where accuracy and durability are key. Weighing 0.36kg, it’s a robust yet lightweight solution for demanding environments.

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Product Parameters

  • Part Number 71911 CD/P4ADFB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • 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 7020 lbf
  • Static Radial Load 6525 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.36 kg
Super Precision Angular Contact Ball Bearings 71911 CD/P4ADFB dimension drawing
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Features

Why Choose 71911 CD/P4ADFB Bearing for Precision Tasks?

71911 CD/P4ADFB Bearing features a 15° contact angle, optimised for high-precision angular contact applications.
Its chrome steel construction ensures durability and smooth operation under dynamic radial loads up to 7020 lbf.

The matched arrangement of two bearings enhances stability, making it ideal for demanding setups.
With a maximum speed of 34,000 rpm, it delivers reliable performance in high-speed environments.

Phenolic cage material reduces friction and noise, contributing to smoother operation.
Its P4A tolerance class guarantees precision, meeting strict industry standards.

Application

Common Applications of 71911 CD/P4ADFB Bearing
In industrial settings, 71911 CD/P4ADFB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment under radial and axial loads. The light preload also helps maintain smooth operation in demanding environments.

Where Is 71911 CD/P4ADFB Bearing Used?
You’ll often find 71911 CD/P4ADFB Bearing in automotive transmissions, where its phenolic cage reduces friction and noise. The matched arrangement of two bearings provides stability for high-speed rotations.

Ideal for Precision: 71911 CD/P4ADFB Bearing
For medical imaging devices, 71911 CD/P4ADFB Bearing offers reliable performance due to its P4A tolerance class. The chrome steel construction ensures long-lasting durability in critical applications.

Automotive vs Aerospace: Applications of 71911 CD/P4ADFB Bearing
In automotive systems, 71911 CD/P4ADFB Bearing supports gear shafts, while in aerospace, it’s used in flight control mechanisms. Its high-speed capability makes it versatile across both industries.

Practical Applications of 71911 CD/P4ADFB Bearing
In robotics, 71911 CD/P4ADFB Bearing is a go-to choice for articulated arms, thanks to its low friction and high precision. The open design allows for easy lubrication, extending service life.

Q&A

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