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Super Precision Angular Contact Ball Bearings 71911 CD/P4ADT

Super Precision Angular Contact Ball Bearings 71911 CD/P4ADT

The 71911 CD/P4ADT is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 7020 lbf and operates smoothly at speeds up to 34,000 RPM.

Its 15° contact angle and matched arrangement of two bearings (DT) provide excellent stability and precision. The phenolic cage ensures durability and reduces friction during high-speed rotations.

This bearing is ideal for applications requiring tight tolerances, such as machine tool spindles or precision instruments. It works well in temperatures ranging from -30°C to 110°C.

Weighing 0.36kg, it’s lightweight yet robust. Compliant with P4A tolerance class, it’s interchangeable with SKF bearings, making it a reliable choice for replacements.

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Product Parameters

  • Part Number 71911 CD/P4ADT
  • 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 << DT
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Available
  • 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/P4ADT dimension drawing
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Features

Performance Features of 71911 CD/P4ADT Bearing

71911 CD/P4ADT Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strong resistance to radial and thrust loads.

The phenolic cage ensures smooth operation at high speeds, up to 34,000 rpm.
Precision-matched pairs (DT arrangement) enhance stability in demanding conditions.

With a dynamic radial load capacity of 7020 lbf, it delivers reliable performance.
The P4A tolerance class guarantees high precision for critical applications.

71911 CD/P4ADT Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its open design allows for easy lubrication, ensuring long service life.

Application

Essential Roles of 71911 CD/P4ADT Bearing
In machine tools, 71911 CD/P4ADT Bearing ensures high precision during operations like milling and grinding, thanks to its angular contact design. The matched arrangement of two bearings enhances stability under radial and axial loads.

Where Is 71911 CD/P4ADT Bearing Used?
You’ll often find 71911 CD/P4ADT Bearing in automotive transmissions, where its 15° contact angle handles combined loads efficiently. Its phenolic cage reduces friction, making it suitable for high-speed applications.

Built for Heavy-Duty Use: 71911 CD/P4ADT Bearing
This bearing excels in robotics, particularly in articulated arms requiring smooth, precise movement. The P4A tolerance class guarantees consistent performance in demanding environments.

Automotive vs Aerospace: Applications of 71911 CD/P4ADT Bearing
In cars, 71911 CD/P4ADT Bearing supports gear systems, while in aircraft, it’s used in auxiliary power units. Its chrome steel construction ensures durability in both settings.

Perfect Fit for Automation: 71911 CD/P4ADT Bearing
For automated production lines, 71911 CD/P4ADT Bearing offers reliable performance in linear guides and spindles. The lubricated design minimises maintenance needs during continuous operation.

Q&A

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