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Super Precision Angular Contact Ball Bearings 71928 CD/P4ADBC

Super Precision Angular Contact Ball Bearings 71928 CD/P4ADBC

The 71928 CD/P4ADBC is a super precision angular contact ball bearing, measuring 140mm by 190mm by 48mm, crafted from durable 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 moderate preload, it offers stable performance in matched pairs (DB arrangement). The open design and phenolic cage ensure easy maintenance and long service life.

Ideal for high-precision applications like machine tool spindles or industrial pumps, where accuracy is key. It works in temperatures from -30°C to 110°C and is interchangeable with SKF bearings.

Weighing 3.3kg, this bearing is robust yet manageable for its size. Compliant with P4A tolerance class for reliable performance.

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Product Parameters

  • Part Number 71928 CD/P4ADBC
  • 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 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
Super Precision Angular Contact Ball Bearings 71928 CD/P4ADBC dimension drawing
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Features

Performance Features of 71928 CD/P4ADBC Bearing

71928 CD/P4ADBC Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to dynamic radial loads up to 34425 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 11,000 rpm.

With a matched arrangement of 2 bearings, it offers balanced performance and moderate preload.

Application

Industrial Uses of 71928 CD/P4ADBC Bearing
71928 CD/P4ADBC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload and P4A tolerance class make it suitable for applications demanding tight control over radial and axial loads.

In aerospace components, 71928 CD/P4ADBC Bearing supports critical systems like turbine shafts, thanks to its chrome steel construction and high dynamic load capacity. The matched arrangement of two bearings enhances stability in demanding flight conditions.

For robotics, 71928 CD/P4ADBC Bearing provides smooth motion in articulated arms, where its phenolic cage reduces friction and wear. The open seal design allows for efficient lubrication, extending service life in continuous operation.

Automotive vs Aerospace: Applications of 71928 CD/P4ADBC Bearing
In automotive systems, 71928 CD/P4ADBC Bearing is often found in high-performance gearboxes, where its 15° contact angle handles combined loads effectively. The metric sizing ensures compatibility with European and Asian vehicle designs.

Aerospace applications benefit from 71928 CD/P4ADBC Bearing’s ability to withstand extreme speeds and temperatures. Its matched bearing arrangement offers reliable performance in avionics and landing gear mechanisms.

What Makes 71928 CD/P4ADBC Bearing a Preferred Choice?
71928 CD/P4ADBC Bearing stands out in medical imaging devices due to its precision and low vibration characteristics. The chrome steel balls and rings ensure consistent performance in sensitive diagnostic equipment.

Its phenolic cage material makes 71928 CD/P4ADBC Bearing a good fit for industrial pumps, where resistance to chemicals and high temperatures is essential. The lubricated design further enhances durability in harsh environments.

Q&A

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