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Super Precision Angular Contact Ball Bearings 71911 CD/P4ADFA

Super Precision Angular Contact Ball Bearings 71911 CD/P4ADFA

The 71911 CD/P4ADFA 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 face-to-face.

This bearing handles radial loads up to 7020 lbf and spins smoothly at speeds up to 34,000 RPM. Its phenolic cage ensures quiet operation and durability, while the extra light preload (Class A) provides precise performance.

The open design allows for easy lubrication, making maintenance straightforward. It operates efficiently in temperatures ranging from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or high-speed robotics, where accuracy and reliability are crucial. Weighing 0.36kg, it offers a robust yet lightweight solution for demanding environments.

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Product Parameters

  • Part Number 71911 CD/P4ADFA
  • 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 Extra light / Class A
  • 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/P4ADFA dimension drawing
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Features

Performance Features of 71911 CD/P4ADFA Bearing

71911 CD/P4ADFA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 7020 lbf, 71911 CD/P4ADFA Bearing handles demanding conditions reliably.
The extra-light preload (Class A) enhances precision, making it suitable for high-speed operations up to 34,000 rpm.

71911 CD/P4ADFA Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its matched arrangement (DF) ensures consistent performance, ideal for precision machinery.

Application

Common Applications of 71911 CD/P4ADFA Bearing
In precision machine tools, 71911 CD/P4ADFA Bearing excels due to its 15° contact angle and P4A tolerance class, ensuring smooth operation at high speeds. The matched DF arrangement provides stability for spindle applications.

Industrial Uses of 71911 CD/P4ADFA Bearing
This bearing is a go-to for high-speed spindles in CNC machines, where its phenolic cage reduces friction and heat buildup. The extra-light preload makes it ideal for fine-tuned adjustments.

Where Is 71911 CD/P4ADFA Bearing Used?
You’ll often find 71911 CD/P4ADFA Bearing in aerospace components like gyroscopes, where its precision and reliability are critical. The chrome steel construction handles demanding radial and angular loads effortlessly.

Optimized for Performance: 71911 CD/P4ADFA Bearing
In robotics, 71911 CD/P4ADFA Bearing supports articulated arms, offering low friction and high rigidity. Its lubricated design ensures long service life even in continuous operation.

Automotive vs Aerospace: Applications of 71911 CD/P4ADFA Bearing
While automotive gearboxes benefit from its high-speed capability, aerospace systems rely on 71911 CD/P4ADFA Bearing for its precision under variable loads. The metric sizing suits both industries perfectly.

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