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Super Precision Angular Contact Ball Bearings 71811 ACD/HCP4

Super Precision Angular Contact Ball Bearings 71811 ACD/HCP4

The 71811 ACD/HCP4 is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, designed for high-speed applications. Its compact 9mm width makes it suitable for tight spaces, while the 25° contact angle helps manage combined loads.

Made from chrome steel with ceramic balls, it offers smooth operation and reduced friction. The phenolic cage ensures durability, and it can handle speeds up to 30,000 RPM, making it ideal for demanding environments.

This bearing is lubricated for easy maintenance and operates efficiently in temperatures from -30°C to 110°C. With a P4 tolerance class, it provides exceptional accuracy for precision machinery.

Weighing just 0.073kg, it’s lightweight yet robust. Perfect for applications like CNC spindles or high-speed motors where precision and reliability are key.

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Product Parameters

  • Part Number 71811 ACD/HCP4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.007mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 2151 lbf
  • Static Radial Load 2295 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 30000 rpm
  • Weight 0.073 kg
  • Price（$） 461.493
Super Precision Angular Contact Ball Bearings 71811 ACD/HCP4 dimension drawing
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Features

Performance Features of 71811 ACD/HCP4 Bearing

71811 ACD/HCP4 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 speed capabilities up to 30,000 rpm.

The phenolic cage ensures smooth operation, even at high speeds, while maintaining alignment precision.
With a P4 tolerance class, 71811 ACD/HCP4 Bearing delivers consistent performance for precision machinery.

Its dynamic radial load capacity of 2151 lbf makes it suitable for demanding industrial applications.
The open design allows for easy lubrication, ensuring long-term reliability.

Application

Key Fields for 71811 ACD/HCP4 Bearing
71811 ACD/HCP4 Bearing works well in high-speed machine tools, where its ceramic balls reduce friction and heat buildup. The 25° contact angle helps manage combined radial and axial loads efficiently.

In automotive applications, 71811 ACD/HCP4 Bearing fits into precision components like electric motor shafts, ensuring smooth rotation. Its P4 tolerance class makes it suitable for systems demanding tight clearances.

For robotics, 71811 ACD/HCP4 Bearing’s phenolic cage offers quiet operation, ideal for articulated arms. The open design allows easy lubrication, extending service life in continuous-use scenarios.

Medical imaging devices benefit from 71811 ACD/HCP4 Bearing’s consistent performance under light loads. The chrome steel rings provide durability without compromising precision in sensitive equipment.

In 3D printers, 71811 ACD/HCP4 Bearing’s low friction helps maintain accurate print head movements. Its compact size fits neatly into tight spaces without sacrificing load capacity.

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