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Super Precision Angular Contact Ball Bearings S71928 ACD/HCP4A

Super Precision Angular Contact Ball Bearings S71928 ACD/HCP4A

The S71928 ACD/HCP4A is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, designed for high accuracy applications. Its compact 24mm width and chrome steel construction make it sturdy yet space-efficient.

This bearing handles radial loads up to 20340 lbf and reaches speeds of 7000 RPM, thanks to its ceramic balls and phenolic cage. The 25° contact angle ensures smooth performance under angular loads.

Sealed for protection, it comes pre-lubricated and works in temperatures from -30°C to 110°C. Its P4 tolerance class (ABEC-7) guarantees precise operation in demanding setups.

Ideal for machine tools or high-speed spindles where precision is key. Weighing 1.4kg, it’s robust for its size and interchangeable with SKF models. Preload and matched arrangements are available for custom needs.

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Product Parameters

  • Part Number S71928 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 Sealed
  • 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 7000 rpm
  • Weight 1.4 kg
  • Price（$） 222.471
Super Precision Angular Contact Ball Bearings S71928 ACD/HCP4A dimension drawing
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Features

Performance Features of S71928 ACD/HCP4A Bearing

S71928 ACD/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 7,000 rpm.
With a dynamic radial load capacity of 20340 lbf, it handles demanding conditions reliably.

S71928 ACD/HCP4A Bearing is preloaded and sealed, reducing maintenance needs and extending service life.
Its precision P4 tolerance class ensures consistent performance in high-accuracy applications.

Application

Industrial Uses of S71928 ACD/HCP4A Bearing
S71928 ACD/HCP4A 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 suitable for high-speed operations.

Where Is S71928 ACD/HCP4A Bearing Used?
In automotive applications, S71928 ACD/HCP4A Bearing supports components like wheel hubs and transmissions, providing reliable performance under heavy loads. Its sealed design helps keep contaminants out, extending service life.

Perfect Fit for Automation: S71928 ACD/HCP4A Bearing
S71928 ACD/HCP4A Bearing works well in robotic arms and automated systems, where its phenolic cage offers stability and low noise. The P4 tolerance class ensures consistent precision in repetitive tasks.

Medical vs Industrial: Where S71928 ACD/HCP4A Bearing Excels
For medical imaging devices, S71928 ACD/HCP4A Bearing’s chrome steel rings and ceramic balls deliver smooth, quiet operation. In industrial settings, its matched arrangement option allows for customised load handling.

Q&A

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