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Super Precision Angular Contact Ball Bearings S71911 ACB/HCP4A

Super Precision Angular Contact Ball Bearings S71911 ACB/HCP4A

The S71911 ACB/HCP4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from durable chrome steel. Its compact 13mm width makes it suitable for space-sensitive applications.

With a 25° contact angle and ceramic balls, it handles radial loads up to 2106 lbf and spins smoothly at speeds up to 24,000 RPM. The phenolic cage ensures quiet operation and long service life.

Pre-lubricated and sealed, this bearing requires minimal maintenance while performing reliably in temperatures from -30°C to 110°C. Its P4 tolerance class (ABEC-7) guarantees high precision.

Ideal for high-speed applications like machine tool spindles or precision instruments. Weighing just 0.18kg, it offers excellent performance without adding bulk. Compatible with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S71911 ACB/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.007mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 5.556 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 2106 lbf
  • Static Radial Load 1721 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 24000 rpm
  • Weight 0.18 kg
  • Price（$） 528.66
Super Precision Angular Contact Ball Bearings S71911 ACB/HCP4A dimension drawing
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Features

Performance Features of S71911 ACB/HCP4A Bearing

S71911 ACB/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The ceramic balls reduce friction, enhancing speed capabilities up to 24,000 rpm.

Its chrome steel rings and phenolic cage ensure durability and smooth operation under dynamic radial loads of 2106 lbf.
The sealed design protects against contaminants, extending service life in various environments.

With a precision tolerance class of P4 (ABEC-7), S71911 ACB/HCP4A Bearing delivers consistent performance.
The lubricated design minimises maintenance needs while maintaining efficiency.

Application

Practical Applications of S71911 ACB/HCP4A Bearing
S71911 ACB/HCP4A Bearing is commonly used in high-speed machine tools, where its precision and ceramic balls reduce friction for smoother operation. The sealed design helps keep contaminants out, extending its lifespan in demanding environments.

In robotics, S71911 ACB/HCP4A Bearing ensures accurate movement in robotic arms, thanks to its angular contact design and P4 tolerance. Its phenolic cage also provides stability during rapid directional changes.

For medical imaging devices, S71911 ACB/HCP4A Bearing’s consistent performance and low heat generation make it ideal for sensitive equipment. The lubricated construction further enhances reliability in continuous-use scenarios.

Automotive applications like electric vehicle motors benefit from S71911 ACB/HCP4A Bearing’s ability to handle both radial and axial loads. Its ceramic balls contribute to quieter operation, which is crucial for passenger comfort.

In 3D printers, S71911 ACB/HCP4A Bearing’s precision ensures smooth linear motion, improving print quality. The compact size fits well in tight spaces without compromising performance.

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