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Super Precision Angular Contact Ball Bearings 71928 CD/P4ADFD

Super Precision Angular Contact Ball Bearings 71928 CD/P4ADFD

The 71928 CD/P4ADFD is a super precision angular contact ball bearing, measuring 140mm by 190mm by 48mm. Made from chrome steel, it’s designed for heavy loads and high-speed operations, with a 15° contact angle for optimal performance.

This bearing can handle dynamic radial loads up to 34425 lbf and spins smoothly at speeds up to 11000 RPM. Its phenolic cage ensures durability, while the open design allows for easy lubrication.

The matched arrangement of two bearings (DF configuration) provides stability under heavy preload. Ideal for precision machinery like spindles or high-performance industrial equipment.

With a temperature range of -30°C to 110°C, it’s suitable for demanding environments. Weighing 3.3kg, it’s robust yet manageable for its size. Compliant with P4A tolerance class for high accuracy.

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Product Parameters

  • Part Number 71928 CD/P4ADFD
  • 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 >< DF
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Heavy / Class D
  • 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/P4ADFD dimension drawing
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Features

How Is 71928 CD/P4ADFD Bearing Engineered for Reliability?

71928 CD/P4ADFD Bearing features a 15° contact angle, optimised for angular contact loads and precision performance.
The chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 34425 lbf, it handles demanding applications with ease.
Its matched arrangement of two bearings in a DF configuration enhances stability under heavy preload conditions.

The P4A tolerance class guarantees high precision, making it suitable for critical tasks.
Lubricated for long-term performance, it operates efficiently at speeds up to 11,000 rpm.

Application

Industrial Uses of 71928 CD/P4ADFD Bearing
71928 CD/P4ADFD Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance class make it suitable for applications demanding minimal deflection.

In aerospace components, 71928 CD/P4ADFD Bearing handles radial and axial loads in turbine systems, thanks to its chrome steel construction. The matched DF arrangement provides stability in high-speed environments.

For automation systems, 71928 CD/P4ADFD Bearing supports robotic arms, offering smooth motion control with its phenolic cage. The open design allows for easy lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71928 CD/P4ADFD Bearing’s precision, ensuring quiet and vibration-free performance. Its temperature stability makes it reliable in sensitive diagnostic equipment.

In electric vehicle motors, 71928 CD/P4ADFD Bearing manages high-speed rotations while maintaining low friction. The metric sizing ensures compatibility with European and Asian motor designs.

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