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Super Precision Angular Contact Ball Bearings 71911 ACD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71911 ACD/P4ATBTC

The 71911 ACD/P4ATBTC 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 8932 lbf and operates smoothly at speeds up to 46,000 RPM.

With a 25° contact angle and moderate preload, it offers excellent stability for angular loads. The phenolic cage ensures quiet operation and durability, even in demanding conditions.

This set includes three matched bearings (arranged > TBT) for balanced performance. Ideal for high-precision applications like machine tool spindles or high-speed robotics.

Weighing 0.54kg, it’s designed for temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for reliable accuracy.

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Product Parameters

  • Part Number 71911 ACD/P4ATBTC
  • 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 39 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 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • 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 8932 lbf
  • Static Radial Load 9338 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 46000 rpm
  • Weight 0.54 kg
Super Precision Angular Contact Ball Bearings 71911 ACD/P4ATBTC dimension drawing
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Features

Performance Features of 71911 ACD/P4ATBTC Bearing

71911 ACD/P4ATBTC Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls ensure durability and smooth operation under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 46,000 rpm, it delivers efficiency without compromising reliability.

71911 ACD/P4ATBTC Bearing operates in temperatures from -30°C to 110°C, suitable for varied environments.
Its moderate preload (Class C) ensures consistent performance in matched arrangements.

Application

Industrial Uses of 71911 ACD/P4ATBTC Bearing
71911 ACD/P4ATBTC Bearing is commonly used in high-speed machine tools, where its precision and moderate preload ensure accurate spindle performance. The matched set of three bearings provides stability in demanding industrial environments.

In automotive applications, 71911 ACD/P4ATBTC Bearing supports components like wheel hubs and transmissions, handling both radial and angular loads efficiently. Its phenolic cage offers durability under high-speed conditions.

For automation systems, 71911 ACD/P4ATBTC Bearing is ideal for robotic arms and CNC machines, thanks to its P4A tolerance class. The chrome steel construction ensures long-lasting performance in continuous operation.

Where Is 71911 ACD/P4ATBTC Bearing Used?
You’ll find 71911 ACD/P4ATBTC Bearing in medical imaging devices, where its low vibration and high precision are crucial. The open design allows for easy lubrication, maintaining smooth operation.

In consumer electronics, 71911 ACD/P4ATBTC Bearing is used in high-end printers and scanners, providing quiet and reliable performance. Its metric sizing makes it compatible with various European and Asian models.

Built for Heavy-Duty Use: 71911 ACD/P4ATBTC Bearing
71911 ACD/P4ATBTC Bearing excels in aerospace applications, such as flight control systems, where its high-speed capability and reliability are essential. The matched set configuration ensures consistent performance.

For industrial fans and compressors, 71911 ACD/P4ATBTC Bearing handles high loads with ease. Its temperature range of -30°C to 110°C makes it suitable for diverse operating conditions.

Automotive vs Aerospace: Applications of 71911 ACD/P4ATBTC Bearing
In automotive systems, 71911 ACD/P4ATBTC Bearing is used in turbochargers, benefiting from its high-speed tolerance. The angular contact design efficiently manages thrust and radial loads.

In aerospace, 71911 ACD/P4ATBTC Bearing is found in helicopter rotors, where precision and durability are critical. The phenolic cage reduces weight while maintaining strength.

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