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Super Precision Angular Contact Ball Bearings 71911 CD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71911 CD/P4ATBTC

The 71911 CD/P4ATBTC 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 9360 lbf and reaches speeds of 34,000 RPM, making it suitable for high-performance applications.

Its 15° contact angle and matched set of three bearings (TBT arrangement) provide excellent stability under moderate preload. The open design and phenolic cage ensure smooth operation and easy maintenance.

This bearing is ideal for precision machinery like CNC spindles or high-speed tooling, where accuracy and reliability are key. It operates in temperatures from -30°C to 110°C and is interchangeable with SKF models.

Weighing 0.54kg, it offers a robust yet lightweight solution for demanding environments. Compliant with P4A tolerance standards, it ensures consistent performance.

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Product Parameters

  • Part Number 71911 CD/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 15°
  • 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 9360 lbf
  • Static Radial Load 9900 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.54 kg
Super Precision Angular Contact Ball Bearings 71911 CD/P4ATBTC dimension drawing
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Features

Performance Features of 71911 CD/P4ATBTC Bearing

71911 CD/P4ATBTC Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 9360 lbf.

The phenolic cage ensures smooth operation, reducing friction and noise during high-speed rotations.
With a maximum speed of 34,000 rpm, it maintains precision and reliability in demanding conditions.

71911 CD/P4ATBTC Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its matched arrangement of three bearings provides stability, making it suitable for precision machinery.

Application

Common Applications of 71911 CD/P4ATBTC Bearing
71911 CD/P4ATBTC Bearing is widely 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 demanding industrial environments.

In aerospace applications, 71911 CD/P4ATBTC Bearing supports components like turbine shafts, offering reliable performance under high speeds. Its phenolic cage provides stability and reduces friction during operation.

For robotics, 71911 CD/P4ATBTC Bearing is ideal for articulated arms, thanks to its matched arrangement and consistent load distribution. The chrome steel construction ensures durability in repetitive motion scenarios.

Medical imaging devices benefit from 71911 CD/P4ATBTC Bearing’s precision, particularly in MRI machines where smooth rotation is essential. The lubricated design also minimises maintenance requirements.

In automotive testing equipment, 71911 CD/P4ATBTC Bearing handles radial and angular loads with ease, making it a dependable choice for dynamometers. Its temperature range ensures performance in various testing conditions.

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