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Super Precision Angular Contact Ball Bearings 71911 CD/P4ADBC

Super Precision Angular Contact Ball Bearings 71911 CD/P4ADBC

The 71911 CD/P4ADBC 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 pair for balanced performance.

This bearing handles radial loads up to 7020 lbf and can spin at impressive speeds of 34,000 RPM. Its phenolic cage ensures smooth operation and durability under moderate preload conditions.

The open design allows for easy lubrication, while the P4A tolerance class guarantees precise performance. Ideal for high-speed applications like machine tool spindles or precision instruments.

Weighing 0.36kg, this matched set operates efficiently in temperatures from -30°C to 110°C. It’s interchangeable with SKF bearings, making it a versatile choice for replacements.

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Product Parameters

  • Part Number 71911 CD/P4ADBC
  • 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 <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • 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/P4ADBC dimension drawing
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Features

How Is 71911 CD/P4ADBC Bearing Engineered for Reliability?

71911 CD/P4ADBC 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 maintains alignment under high speeds.
With a dynamic radial load capacity of 7020 lbf, it delivers consistent performance in precision applications.
The P4A tolerance class guarantees high accuracy, making it suitable for demanding industrial uses.

Application

Industrial Uses of 71911 CD/P4ADBC Bearing
71911 CD/P4ADBC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload helps maintain stability during heavy cutting operations.

In automotive applications, 71911 CD/P4ADBC Bearing supports high-speed components like turbochargers and transmission systems. Its phenolic cage reduces friction, enhancing efficiency in demanding conditions.

For robotics, 71911 CD/P4ADBC Bearing provides smooth motion control in articulated arms and precision actuators. The matched arrangement of two bearings improves load distribution and alignment.

Medical imaging devices benefit from 71911 CD/P4ADBC Bearing’s consistent performance and low noise levels. The chrome steel construction ensures durability in sterile environments.

In consumer electronics, 71911 CD/P4ADBC Bearing is ideal for high-speed fans and precision printers. Its open design allows for easy lubrication, extending service life.

Q&A

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