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Super Precision Angular Contact Ball Bearings 71911 CD/P4A

Super Precision Angular Contact Ball Bearings 71911 CD/P4A

The 71911 CD/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 4388 lbf and operates smoothly at speeds up to 26,000 RPM.

With a 15° contact angle and open design, it offers excellent performance for angular contact applications. The phenolic cage ensures durability and reduces friction during high-speed rotations.

This bearing is ideal for precision machinery like spindles or CNC tools, where accuracy and speed are crucial. It works well in temperatures ranging from -30°C to 110°C.

Weighing just 0.18kg, it’s lightweight yet robust. Compliant with P4 tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 71911 CD/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 7.938 mm
  • Ball Qty 23
  • Contact Angle 15°
  • 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 4388 lbf
  • Static Radial Load 3285 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 26000 rpm
  • Weight 0.18 kg
  • Price（$） 439.92
Super Precision Angular Contact Ball Bearings 71911 CD/P4A dimension drawing
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Features

How Is 71911 CD/P4A Bearing Engineered for Reliability?

71911 CD/P4A Bearing features a 15° contact angle, optimised for handling combined radial and axial loads.
Its chrome steel construction ensures durability, while the phenolic cage reduces friction and wear.
With a dynamic radial load capacity of 4388 lbf, it performs reliably in high-speed applications.
The P4 tolerance class guarantees precision, making it suitable for demanding industrial uses.

Application

Key Fields for 71911 CD/P4A Bearing
71911 CD/P4A Bearing is widely used in high-speed machine tools, where its precision and angular contact design ensure accurate spindle rotation. The open seal type allows for efficient lubrication, extending its service life in demanding conditions.

In automotive applications, 71911 CD/P4A Bearing supports components like wheel hubs and transmissions, handling both radial and axial loads smoothly. Its phenolic cage reduces friction, making it a reliable choice for performance vehicles.

For robotics, 71911 CD/P4A Bearing’s P4 tolerance class provides the accuracy needed for precise movements in robotic arms. The chrome steel construction ensures durability, even in continuous operation scenarios.

Medical imaging devices benefit from 71911 CD/P4A Bearing’s low noise and vibration characteristics. Its consistent performance is crucial for maintaining the precision of diagnostic equipment.

In consumer electronics, 71911 CD/P4A Bearing is found in high-end printers and scanners, where its compact size and reliability enhance device longevity. The metric dimensions make it easy to integrate into various designs.

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