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Super Precision Angular Contact Ball Bearings 71928 CD/P4ADGA

Super Precision Angular Contact Ball Bearings 71928 CD/P4ADGA

The 71928 CD/P4ADGA is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 34425 lbf and operates smoothly at speeds up to 11000 RPM.

With a 15° contact angle and universal matching, it offers excellent alignment flexibility for back-to-back or face-to-face arrangements. The phenolic cage ensures durability and reduced friction during high-speed use.

Its extra light preload (Class A) enhances precision, making it suitable for applications like machine tool spindles or high-performance motors. The bearing works reliably in temperatures from -30°C to 110°C.

Weighing 3.3kg, this matched set of two bearings is ideal for demanding industrial environments where accuracy and stability are crucial. Compliant with P4A tolerance standards for consistent performance.

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Product Parameters

  • Part Number 71928 CD/P4ADGA
  • 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 Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • 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
  • Price（$） 1358.37
Super Precision Angular Contact Ball Bearings 71928 CD/P4ADGA dimension drawing
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Features

Performance Features of 71928 CD/P4ADGA Bearing

71928 CD/P4ADGA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 34425 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 11,000 rpm.
Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.

With a P4A tolerance class, 71928 CD/P4ADGA Bearing delivers precision in demanding environments.
Its extra light preload reduces friction, extending service life while maintaining performance.

Application

Industrial Uses of 71928 CD/P4ADGA Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The universal matching feature allows for flexible arrangements in complex setups.

In aerospace applications, 71928 CD/P4ADGA Bearing handles radial and axial loads in turbine systems, thanks to its phenolic cage and chrome steel construction. Its extra-light preload also minimises friction at high speeds.

For robotics, this bearing supports articulated arms and joints, providing smooth movement with minimal vibration. The P4A tolerance class ensures consistent performance in automated production lines.

Medical imaging devices benefit from 71928 CD/P4ADGA Bearing’s precision, particularly in MRI machines where quiet operation is essential. The lubricated design further enhances its longevity in continuous-use scenarios.

In automotive testing equipment, this bearing’s dynamic load capacity makes it suitable for simulating real-world conditions. Its tandem arrangement option allows for custom configurations in specialised rigs.

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