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Super Precision Angular Contact Ball Bearings S71920 ACB/HCP4A

Super Precision Angular Contact Ball Bearings S71920 ACB/HCP4A

The S71920 ACB/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 radial loads up to 4568 lbf.

Sealed for protection, this bearing comes pre-lubricated and can handle speeds up to 13,000 RPM. The phenolic cage and chrome steel rings offer durability, while the P4 tolerance class guarantees precise alignment.

With a compact width of 20mm, it fits well in tight spaces. Ideal for machine tools or high-speed spindles where accuracy is crucial. The bearing operates reliably in temperatures from -30°C to 110°C.

Weighing 0.83kg, it’s robust yet manageable. Matched arrangements are available for paired installations, making it versatile for complex setups. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S71920 ACB/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 7.938 mm
  • Ball Qty 37
  • 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 4568 lbf
  • Static Radial Load 4770 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 13000 rpm
  • Weight 0.83 kg
  • Price（$） 1443.366
Super Precision Angular Contact Ball Bearings S71920 ACB/HCP4A dimension drawing
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Features

Why Choose S71920 ACB/HCP4A Bearing for Precision Tasks?

S71920 ACB/HCP4A Bearing features a 25° contact angle, ideal for handling combined radial and axial loads.
Its ceramic balls and chrome steel rings ensure smooth operation even at high speeds up to 13,000 rpm.
The phenolic cage reduces friction and wear, enhancing the bearing’s longevity.
With a P4 tolerance class, it delivers exceptional precision for demanding applications.

Application

Where Is S71920 ACB/HCP4A Bearing Used?
S71920 ACB/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment under radial and axial loads. The ceramic balls reduce friction, making it ideal for high-speed operations.

In robotics, S71920 ACB/HCP4A Bearing supports articulated arms and joints, providing smooth movement and durability. Its phenolic cage offers lightweight stability, which is crucial for repetitive motions.

For medical imaging devices, S71920 ACB/HCP4A Bearing’s sealed design keeps contaminants out, ensuring reliable performance in sterile environments. The P4 tolerance class guarantees the precision needed for sensitive equipment.

In automotive applications, S71920 ACB/HCP4A Bearing is found in gearboxes and electric motors, where its high-speed capability and load handling are essential. The matched arrangement option allows for custom configurations to suit specific needs.

Consumer electronics like high-end printers benefit from S71920 ACB/HCP4A Bearing’s quiet operation and long service life. The lubricated design ensures minimal maintenance, making it a practical choice for everyday devices.

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