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Super Precision Angular Contact Ball Bearings 71928 ACD/HCP4A

Super Precision Angular Contact Ball Bearings 71928 ACD/HCP4A

The 71928 ACD/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 durability and smooth operation.

It handles radial loads up to 20340 lbf and spins at speeds up to 11000 RPM, ideal for high-performance applications. The 25° contact angle ensures efficient load distribution.

Its phenolic cage and open design allow for easy lubrication and maintenance. The bearing is available with preload and matched arrangements for enhanced stability.

Suitable for precision machinery like CNC spindles or high-speed motors, it operates in temperatures from -30°C to 110°C. Compliant with P4 tolerance class for exceptional accuracy.

Weighing 1.39kg, it’s a robust choice for demanding environments. Interchangeable with SKF bearings, making replacements straightforward.

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Product Parameters

  • Part Number 71928 ACD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.01mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 15.875 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 20340 lbf
  • Static Radial Load 24750 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 11000 rpm
  • Weight 1.39 kg
  • Price（$） 185.688
Super Precision Angular Contact Ball Bearings 71928 ACD/HCP4A dimension drawing
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Features

Performance Features of 71928 ACD/HCP4A Bearing

71928 ACD/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls reduce friction, enhancing precision and durability.

The phenolic cage maintains ball alignment, ensuring smooth operation even at high speeds up to 11,000 rpm.
With a dynamic radial load capacity of 20340 lbf, it handles demanding conditions reliably.

71928 ACD/HCP4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its P4 tolerance class ensures high precision, making it suitable for critical applications.

Application

Key Fields for 71928 ACD/HCP4A Bearing
71928 ACD/HCP4A Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making it ideal for high-speed spindle applications.

In aerospace components, 71928 ACD/HCP4A Bearing’s phenolic cage and P4 tolerance class provide reliable performance under extreme conditions. Its matched arrangement option further enhances stability in critical flight systems.

For automation equipment like robotic arms, 71928 ACD/HCP4A Bearing’s preload capability ensures minimal deflection during repetitive movements. The open design allows for custom lubrication to suit specific operational needs.

Medical imaging devices benefit from 71928 ACD/HCP4A Bearing’s smooth operation and low heat generation. The chrome steel rings and ceramic balls offer long service life in sterile environments.

In high-end printing machinery, 71928 ACD/HCP4A Bearing’s precision reduces vibration for sharper output quality. Its metric sizing ensures compatibility with European and Asian manufacturing standards.

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