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Super Precision Angular Contact Ball Bearings 71911 ACD/P4AQBCC

Super Precision Angular Contact Ball Bearings 71911 ACD/P4AQBCC

The 71911 ACD/P4AQBCC is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 10980 lbf and operates smoothly at speeds up to 34000 RPM.

With a 25° contact angle and moderate preload, it offers excellent stability for angular contact applications. The phenolic cage ensures quiet operation and long service life.

This bearing comes in a matched set of four, ideal for high-precision machinery like spindles or CNC tools. It performs reliably in temperatures from -30°C to 110°C.

Weighing 0.72kg, it’s a robust yet lightweight choice for demanding industrial environments. Compliant with P4A tolerance standards for precision performance.

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Product Parameters

  • Part Number 71911 ACD/P4AQBCC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 52 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 10980 lbf
  • Static Radial Load 12375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.72 kg
Super Precision Angular Contact Ball Bearings 71911 ACD/P4AQBCC dimension drawing
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Features

Why Choose 71911 ACD/P4AQBCC Bearing for Precision Tasks?

71911 ACD/P4AQBCC Bearing features a 25° contact angle, ideal for handling combined radial and axial loads with precision.
Its chrome steel rings and balls ensure durability and smooth operation in high-speed applications.
The phenolic cage maintains ball alignment, reducing friction and wear for consistent performance.
With a maximum speed of 34,000 rpm, it excels in demanding environments.

Application

Key Fields for 71911 ACD/P4AQBCC Bearing
71911 ACD/P4AQBCC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload and P4A tolerance class make it suitable for applications demanding minimal runout.

In automotive systems, 71911 ACD/P4AQBCC Bearing supports high-speed components like turbochargers and electric motors. Its chrome steel construction provides durability under both radial and angular loads.

For robotics, 71911 ACD/P4AQBCC Bearing offers smooth motion in articulated arms and joints. The phenolic cage reduces friction, enhancing efficiency in repetitive movements.

Medical imaging devices benefit from 71911 ACD/P4AQBCC Bearing’s precision and low noise operation. The open design allows for easy lubrication, ensuring long service life in critical applications.

In aerospace, 71911 ACD/P4AQBCC Bearing is valued for its reliability in navigation systems and actuators. The matched set configuration ensures consistent performance across multiple bearings.

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