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Super Precision Angular Contact Ball Bearings 71928 CD/P4ADGC

Super Precision Angular Contact Ball Bearings 71928 CD/P4ADGC

The 71928 CD/P4ADGC 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.
Its 15° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face. The phenolic cage ensures durability while keeping the bearing lightweight.
This bearing comes pre-lubricated and works in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or aerospace systems.
Weighing 3.3kg, it’s part of a matched set for balanced performance. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71928 CD/P4ADGC
  • 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 Moderate / Class C
  • 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（$） 1225.17
Super Precision Angular Contact Ball Bearings 71928 CD/P4ADGC dimension drawing
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Features

Performance Features of 71928 CD/P4ADGC Bearing

71928 CD/P4ADGC Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 34425 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 11,000 rpm, it balances precision and efficiency.

71928 CD/P4ADGC Bearing operates in temperatures from -30°C to 110°C, suitable for varied environments.
Its universal matching design allows flexible arrangements like back-to-back or face-to-face mounting.

Moderate preload (Class C) ensures smooth operation while minimising wear.
The open seal type facilitates easy lubrication and maintenance.

Precision tolerance class P4A guarantees consistent performance in demanding applications.
Its 29 balls of 15.875 mm diameter provide stable load-bearing capacity.

Application

Industrial Uses of 71928 CD/P4ADGC Bearing
This bearing is commonly used in high-precision machine tools, where its moderate preload and angular contact design ensure accurate spindle rotation. The universal matching feature allows flexible arrangement in back-to-back or face-to-face configurations.

In aerospace applications, 71928 CD/P4ADGC Bearing handles radial and axial loads in turbine systems, thanks to its chrome steel construction and phenolic cage. Its P4A tolerance class guarantees consistent performance under demanding conditions.

For automation equipment, this bearing supports robotic arms and CNC systems, where smooth operation at high speeds is essential. The lubricated design reduces friction, extending service life in continuous-use scenarios.

Medical imaging devices also benefit from 71928 CD/P4ADGC Bearing’s precision, particularly in MRI machines where quiet, vibration-free rotation is critical. The temperature range suits both clinical and industrial environments.

Q&A

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