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Super Precision Angular Contact Ball Bearings 71911 CE/P4ADBA

Super Precision Angular Contact Ball Bearings 71911 CE/P4ADBA

The 71911 CE/P4ADBA is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and comes in a matched pair (DB arrangement) for balanced performance.

Designed for angular loads, it handles dynamic radial loads up to 5648 lbf and spins smoothly at speeds up to 34,000 RPM. The phenolic cage ensures quiet operation and durability.

Its open design allows easy lubrication, while the extra-light preload (Class A) ensures minimal friction. Ideal for high-precision applications like machine tool spindles or robotics.

Weighing 0.34kg, this bearing operates efficiently in temperatures from -30°C to 110°C. It’s interchangeable with SKF bearings, making replacements straightforward.

The 71911 CE/P4ADBA meets P4A tolerance standards for exceptional accuracy. Its 21 balls (7.938mm each) provide smooth, reliable rotation under load.

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Product Parameters

  • Part Number 71911 CE/P4ADBA
  • 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 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 21
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 5648 lbf
  • Static Radial Load 4770 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.34 kg
Super Precision Angular Contact Ball Bearings 71911 CE/P4ADBA dimension drawing
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Features

Performance Features of 71911 CE/P4ADBA Bearing

71911 CE/P4ADBA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strong resistance to radial loads, with a dynamic capacity of 5648 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 34,000 rpm.
This makes 71911 CE/P4ADBA Bearing suitable for precision tasks requiring reliability and efficiency.

With an extra light preload (Class A), it minimises friction and enhances performance.
The matched arrangement of two bearings (DB) ensures stability in demanding conditions.

71911 CE/P4ADBA Bearing operates effectively in temperatures from -30°C to 110°C.
Its open design allows for easy lubrication, maintaining smooth operation over time.

Application

Industrial Uses of 71911 CE/P4ADBA Bearing
71911 CE/P4ADBA Bearing is commonly used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The extra light preload makes it suitable for applications demanding minimal friction and smooth operation.

In robotics, 71911 CE/P4ADBA Bearing supports articulated arms, providing stability and load handling in automated assembly lines. Its matched arrangement (DB) enhances rigidity, which is crucial for repeatable movements.

For medical imaging devices like CT scanners, 71911 CE/P4ADBA Bearing’s phenolic cage reduces vibration, contributing to clearer image quality. The P4A tolerance class ensures consistent performance in sensitive diagnostic equipment.

Automotive applications include electric vehicle motors, where 71911 CE/P4ADBA Bearing handles combined radial and axial loads efficiently. Its chrome steel construction offers durability in high-temperature environments.

In aerospace systems, 71911 CE/P4ADBA Bearing is found in flight control mechanisms, where reliability and precision are non-negotiable. The open design allows for easy lubrication, extending service life in demanding conditions.

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