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Super Precision Angular Contact Ball Bearings 71911 ACB/P4A

Super Precision Angular Contact Ball Bearings 71911 ACB/P4A

The 71911 ACB/P4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 2106 lbf and operates smoothly at speeds up to 32,000 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and low friction. The open design allows for easy lubrication, enhancing its performance in demanding conditions.

This bearing is ideal for high-precision applications like machine tool spindles or medical equipment. Its P4 tolerance class ensures reliable accuracy, making it a top choice for engineers.

Weighing just 0.18kg, it’s lightweight yet durable. Compatible with SKF bearings, it’s a versatile option for replacements or upgrades. Suitable for temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 71911 ACB/P4A
  • 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 Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2106 lbf
  • Static Radial Load 1721 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 32000 rpm
  • Weight 0.18 kg
  • Price（$） 439.353
Super Precision Angular Contact Ball Bearings 71911 ACB/P4A dimension drawing
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Features

Performance Features of 71911 ACB/P4A Bearing

71911 ACB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.
With a dynamic radial load capacity of 2106 lbf, it handles demanding tasks efficiently.
The P4 tolerance class guarantees high precision, making it suitable for critical applications.

Application

Industrial Uses of 71911 ACB/P4A Bearing
71911 ACB/P4A Bearing is commonly used in high-speed machine tools, where its precision angular contact design ensures smooth operation. The 25° contact angle provides excellent radial and axial load support.

In automotive applications, 71911 ACB/P4A Bearing fits well in gearboxes and electric motors, thanks to its P4 tolerance class. Its phenolic cage reduces friction, making it suitable for high-speed rotations.

For robotics, 71911 ACB/P4A Bearing offers reliable performance in robotic arms and automated systems. The chrome steel construction ensures durability even under continuous use.

Medical imaging devices benefit from 71911 ACB/P4A Bearing’s precision and low noise levels. Its lubricated design helps maintain consistent performance in sensitive equipment.

In consumer electronics like printers, 71911 ACB/P4A Bearing provides quiet and efficient operation. The compact size fits well in space-constrained designs.

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