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Super Precision Angular Contact Ball Bearings 71911 CB/P4A

Super Precision Angular Contact Ball Bearings 71911 CB/P4A

The 71911 CB/P4A 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 2239 lbf and spins smoothly at speeds up to 34,000 RPM.

With a 15° contact angle and open design, it offers excellent performance in high-speed applications. The phenolic cage ensures quiet operation and long service life.

This bearing is available with preload and matched arrangements, making it versatile for precise setups. It works well in temperatures from -30°C to 110°C.

Ideal for machine tools or high-precision equipment where accuracy and speed are crucial. Weighing just 0.18kg, it’s lightweight yet robust for its size. Compliant with P4 tolerance class for reliable performance.

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Product Parameters

  • Part Number 71911 CB/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 5.556 mm
  • Ball Qty 28
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2239 lbf
  • Static Radial Load 1834 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.18 kg
  • Price（$） 439.821
Super Precision Angular Contact Ball Bearings 71911 CB/P4A dimension drawing
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Features

Performance Features of 71911 CB/P4A Bearing

71911 CB/P4A Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 2239 lbf.

The phenolic cage maintains ball alignment, reducing friction and enabling smooth operation at speeds up to 34,000 rpm.
With a P4 tolerance class, it delivers high accuracy for demanding industrial uses.

71911 CB/P4A Bearing operates efficiently in temperatures from -30° to 110°C, suitable for varied environments.
Its open design allows for easy lubrication, enhancing performance and longevity.

Application

How Does 71911 CB/P4A Bearing Improve Performance?
71911 CB/P4A Bearing is widely used in high-speed machine tools, where its 15° contact angle ensures smooth rotation under radial and axial loads. The phenolic cage reduces friction, making it ideal for precision applications.

In robotics, 71911 CB/P4A Bearing supports articulated arms, providing stability and accuracy in repetitive movements. Its P4 tolerance class guarantees consistent performance in automated systems.

For medical imaging devices, 71911 CB/P4A Bearing’s chrome steel construction offers durability and reliability. The open design allows for easy lubrication, extending its lifespan in critical healthcare equipment.

Automotive vs Aerospace: Applications of 71911 CB/P4A Bearing
In automotive transmissions, 71911 CB/P4A Bearing handles high-speed rotations with minimal vibration. Its matched arrangement option ensures balanced performance in demanding conditions.

Aerospace systems benefit from 71911 CB/P4A Bearing’s lightweight design and precision engineering. The temperature range of -30° to 110°C makes it suitable for various flight environments.

Built for Heavy-Duty Use: 71911 CB/P4A Bearing
Industrial pumps rely on 71911 CB/P4A Bearing for its ability to handle both radial and thrust loads. The lubricated design reduces wear, ensuring long-term reliability.

In conveyor systems, 71911 CB/P4A Bearing’s high-speed capability keeps production lines running smoothly. The chrome steel balls provide excellent resistance to fatigue under continuous use.

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