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Super Precision Angular Contact Ball Bearings 71928 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings 71928 CDGA/HCP4A

The 71928 CDGA/HCP4A is a super precision angular contact ball bearing, measuring 140mm by 190mm by 24mm. Made from chrome steel with ceramic balls, it offers high accuracy and durability.

It handles radial loads up to 21510 lbf and spins smoothly at speeds up to 11000 RPM. The extra light preload ensures minimal friction, making it ideal for high-speed applications.

Its open design allows easy lubrication, while the phenolic cage enhances performance. The bearing operates efficiently in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings and comes in a matched set of two. Perfect for precision machinery like spindles or CNC equipment where accuracy is crucial.

Weighing 1.39kg, it’s robust yet manageable for its size. Compliant with P4A tolerance class for superior performance.

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Product Parameters

  • Part Number 71928 CDGA/HCP4A
  • 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 24 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 No
  • 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 21510 lbf
  • Static Radial Load 26100 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 1.39 kg
Super Precision Angular Contact Ball Bearings 71928 CDGA/HCP4A dimension drawing
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Features

Performance Features of 71928 CDGA/HCP4A Bearing

71928 CDGA/HCP4A Bearing is designed with a 15° contact angle, optimising its performance in angular contact applications.
The chrome steel rings and ceramic balls enhance durability and reduce friction for smoother operation.

With a dynamic radial load capacity of 21510 lbf, it handles demanding conditions reliably.
Its phenolic cage ensures stability and alignment, even at high speeds up to 11,000 rpm.

The extra light preload (Class A) minimises vibration, making it ideal for precision tasks.
Its universal matching capability allows flexible configurations like back-to-back or face-to-face arrangements.

Operating between -30°C to 110°C, 71928 CDGA/HCP4A Bearing performs consistently in varied environments.
The P4A tolerance class guarantees high precision, meeting strict industrial standards.

Application

Key Fields for 71928 CDGA/HCP4A Bearing
71928 CDGA/HCP4A Bearing is commonly used in high-precision machine tools, where its 15° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making it suitable for high-speed operations.

In aerospace applications, 71928 CDGA/HCP4A Bearing supports components like turbine shafts, thanks to its phenolic cage and P4A tolerance class. The extra light preload also enhances performance in demanding environments.

For automation systems, 71928 CDGA/HCP4A Bearing excels in robotic arms and CNC machines, where its universal matching capability allows flexible configurations. The lubricated design ensures long service life even under continuous use.

Medical imaging devices benefit from 71928 CDGA/HCP4A Bearing’s chrome steel rings and ceramic balls, which provide quiet and reliable operation. The open seal type simplifies maintenance in sterile environments.

Q&A

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