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Super Precision Angular Contact Ball Bearings 71928 ACD/HCP4ADGA

Super Precision Angular Contact Ball Bearings 71928 ACD/HCP4ADGA

The 71928 ACD/HCP4ADGA is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, measuring 48mm in width. Made from chrome steel with ceramic balls, it offers high performance in demanding applications.

With a 25° contact angle and extra light preload, it handles radial loads up to 32850 lbf and spins smoothly at speeds up to 11000 RPM. The phenolic cage ensures durability and reduces friction.

Its open design allows easy lubrication, and it operates efficiently in temperatures from -30°C to 110°C. The bearing comes in a matched set of two, suitable for universal mounting arrangements.

Ideal for high-precision machinery like CNC spindles or aerospace equipment, where accuracy and reliability are crucial. Weighing 2.77kg, it’s robust yet manageable for its size. Compliant with P4A tolerance class for exceptional precision.

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Product Parameters

  • Part Number 71928 ACD/HCP4ADGA
  • 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 25°
  • 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 32850 lbf
  • Static Radial Load 49500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 2.77 kg
  • Price（$） 1964.151
Super Precision Angular Contact Ball Bearings 71928 ACD/HCP4ADGA dimension drawing
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Features

Performance Features of 71928 ACD/HCP4ADGA Bearing

71928 ACD/HCP4ADGA Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and ceramic balls ensure smooth operation under dynamic radial loads up to 32850 lbf.

The phenolic cage maintains ball alignment, reducing friction and wear during high-speed rotation.
With a maximum speed of 11,000 rpm, it delivers reliable performance in demanding conditions.

Universal matching allows flexible arrangement options, including back-to-back or face-to-face configurations.
The extra light preload (Class A) ensures minimal friction while maintaining precision.

71928 ACD/HCP4ADGA Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its P4A tolerance class guarantees consistent accuracy for precision machinery applications.

Application

Industrial Uses of 71928 ACD/HCP4ADGA Bearing
71928 ACD/HCP4ADGA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for applications demanding smooth operation.

In aerospace systems, 71928 ACD/HCP4ADGA Bearing supports components like turbine shafts, thanks to its extra-light preload and universal matching. Its phenolic cage adds durability in high-speed environments.

For automation equipment, 71928 ACD/HCP4ADGA Bearing excels in robotic arms, where its P4A tolerance class guarantees consistent performance. The open seal type allows for easy lubrication, extending its service life.

Medical imaging devices benefit from 71928 ACD/HCP4ADGA Bearing’s chrome steel rings, which provide reliability in high-precision scanners. The ceramic balls also minimise heat generation, crucial for sensitive equipment.

In electric vehicle motors, 71928 ACD/HCP4ADGA Bearing handles angular loads efficiently, ensuring smooth power transmission. Its metric sizing makes it compatible with a wide range of European and Asian designs.

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