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Super Precision Angular Contact Ball Bearings 71928 CD/P4ADBA

Super Precision Angular Contact Ball Bearings 71928 CD/P4ADBA

The 71928 CD/P4ADBA is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 34425 lbf and operates smoothly at speeds up to 11000 RPM.

Its 15° contact angle and matched pair design (DB arrangement) provide excellent stability under angular loads. The phenolic cage ensures quiet operation and long service life, even in demanding conditions.

This bearing is lubricated for easy maintenance and works well in temperatures from -30°C to 110°C. With a P4A tolerance class, it offers high precision for critical applications.

Ideal for machine tools or high-speed spindles where accuracy is essential. Weighing 3.3kg, it’s robust yet manageable for its size. Interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 71928 CD/P4ADBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 48 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 15.875 mm
  • Ball Qty 29
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 34425 lbf
  • Static Radial Load 52200 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 3.3 kg
Super Precision Angular Contact Ball Bearings 71928 CD/P4ADBA dimension drawing
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Features

Performance Features of 71928 CD/P4ADBA Bearing

71928 CD/P4ADBA 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.

The bearing handles dynamic radial loads up to 34425 lbf, making it suitable for high-performance machinery.
With a maximum speed of 11,000 rpm, it balances precision and efficiency in demanding conditions.

71928 CD/P4ADBA Bearing operates in temperatures from -30°C to 110°C, ensuring reliability in varied environments.
Its extra light preload (Class A) enhances precision, ideal for applications requiring minimal deflection.

Application

Key Fields for 71928 CD/P4ADBA Bearing
71928 CD/P4ADBA 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.

In aerospace applications, 71928 CD/P4ADBA Bearing supports critical components like turbine shafts, thanks to its extra-light preload and high-speed capability. The phenolic cage reduces friction, making it suitable for long-duration flights.

For automation systems, 71928 CD/P4ADBA Bearing excels in robotic arms, where its P4A tolerance class guarantees precise movement. The chrome steel construction ensures durability even in continuous operation.

Medical imaging devices benefit from 71928 CD/P4ADBA Bearing’s smooth performance, essential for reducing vibration in sensitive equipment. Its open design allows for easy lubrication, maintaining efficiency over time.

In electric vehicle motors, 71928 CD/P4ADBA Bearing handles high radial loads while maintaining low noise levels. The 15° contact angle optimises load distribution, extending the bearing’s service life.

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