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Super Precision Angular Contact Ball Bearings 71811 CD/P4QFCC

Super Precision Angular Contact Ball Bearings 71811 CD/P4QFCC

The 71811 CD/P4QFCC is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 6075 lbf and operates smoothly at speeds up to 34,000 RPM.

Its 15° contact angle and moderate preload ensure stable performance in high-speed applications. The phenolic cage reduces friction and wear, enhancing longevity.

This bearing comes in a matched set of four, arranged >><< for balanced load distribution. Ideal for precision machinery like spindles or CNC tools where accuracy is key. Weighing 0.32kg, it’s designed for temperatures from -30°C to 110°C. Compliant with P4 tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71811 CD/P4QFCC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 36 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 15°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings >><< QFC
  • 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 6075 lbf
  • Static Radial Load 9675 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.32 kg
Super Precision Angular Contact Ball Bearings 71811 CD/P4QFCC dimension drawing
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Features

Performance Features of 71811 CD/P4QFCC Bearing

71811 CD/P4QFCC Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 6075 lbf, it handles demanding conditions reliably.
Its P4 tolerance class guarantees high precision, making it suitable for critical applications.

The matched arrangement of four bearings ensures balanced performance and stability.
Operating at speeds up to 34,000 rpm, it maintains efficiency without compromising longevity.

Its moderate preload (Class C) enhances rigidity while reducing vibration.
The open seal design allows for easy lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 71811 CD/P4QFCC Bearing
71811 CD/P4QFCC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of four bearings provides stability in demanding industrial environments.

In automotive applications, 71811 CD/P4QFCC Bearing supports high-speed components like electric motor shafts, thanks to its moderate preload and phenolic cage. Its metric sizing makes it a reliable choice for European and Asian vehicle models.

For medical imaging devices, 71811 CD/P4QFCC Bearing’s chrome steel construction offers consistent performance under radial loads. The open seal design allows for easy maintenance in critical healthcare equipment.

Automation systems benefit from 71811 CD/P4QFCC Bearing’s ability to handle angular loads in robotic arms. The P4 tolerance class ensures smooth operation in high-speed, precision-driven applications.

In consumer electronics, 71811 CD/P4QFCC Bearing can be found in high-end printers, where its durability and low friction enhance performance. The lubricated design ensures long service life even with frequent use.

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