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Super Precision Angular Contact Ball Bearings S71920 ACD/HCP4A

Super Precision Angular Contact Ball Bearings S71920 ACD/HCP4A

The S71920 ACD/HCP4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, designed for high-performance applications. Its 25° contact angle and ceramic balls ensure smooth operation under heavy radial loads up to 12870 lbf.

This sealed bearing comes pre-lubricated and can handle speeds up to 9500 RPM, making it suitable for high-speed machinery. The phenolic cage and chrome steel rings provide durability, while the P4 tolerance class guarantees precise alignment.

With a compact width of 20mm, it fits well in space-constrained designs. The bearing operates efficiently in temperatures from -30°C to 110°C, ideal for industrial or automotive uses.

Weighing 0.68kg, it’s robust yet lightweight. Its sealed design keeps contaminants out, reducing maintenance needs. Perfect for applications requiring high precision and reliability, such as machine tools or spindle drives.

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Product Parameters

  • Part Number S71920 ACD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • 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 12870 lbf
  • Static Radial Load 14175 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 9500 rpm
  • Weight 0.68 kg
  • Price（$） 1448.37
Super Precision Angular Contact Ball Bearings S71920 ACD/HCP4A dimension drawing
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Features

How Is S71920 ACD/HCP4A Bearing Engineered for Reliability?

S71920 ACD/HCP4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
The ceramic balls and chrome steel rings enhance durability, reducing friction and wear.

With a dynamic radial load capacity of 12870 lbf, it performs reliably in high-speed applications.
Its P4 tolerance class ensures precision, making it suitable for demanding machinery.

The sealed design and preload availability further improve its stability and longevity.
Operating smoothly up to 9,500 rpm, it balances speed and load capacity effectively.

Application

Common Applications of S71920 ACD/HCP4A Bearing
S71920 ACD/HCP4A Bearing is widely 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.

In robotics, S71920 ACD/HCP4A Bearing provides smooth motion control for articulated arms and joints. Its sealed design helps keep contaminants out, extending service life in demanding environments.

For aerospace applications, S71920 ACD/HCP4A Bearing offers reliable performance in avionics and flight control systems. The phenolic cage material ensures stability under varying temperatures and loads.

In medical imaging devices, S71920 ACD/HCP4A Bearing’s precision and low noise make it ideal for MRI and CT scanners. The P4 tolerance class guarantees consistent performance in critical healthcare settings.

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