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Super Precision Angular Contact Ball Bearings 71911 ACD/P4AQGB

Super Precision Angular Contact Ball Bearings 71911 ACD/P4AQGB

The 71911 ACD/P4AQGB 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 25° contact angle and is designed for light preload applications, offering smooth operation at speeds up to 46,000 RPM.

Its universal matching design allows flexible arrangements like back-to-back or face-to-face, making it versatile for various setups. The phenolic cage ensures durability and reduces friction, while the open seal type simplifies maintenance.

With a dynamic radial load capacity of 10,980 lbf, this bearing is suitable for high-precision machinery like CNC spindles or grinding equipment. It operates efficiently in temperatures ranging from -30°C to 110°C.

Weighing 0.72kg, it comes in a matched set of four bearings for consistent performance. Compliant with P4A tolerance standards, it ensures reliable precision in demanding applications. Ideal for industries requiring tight tolerances and high-speed performance.

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Product Parameters

  • Part Number 71911 ACD/P4AQGB
  • 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 52 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 10980 lbf
  • Static Radial Load 12375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 46000 rpm
  • Weight 0.72 kg
Super Precision Angular Contact Ball Bearings 71911 ACD/P4AQGB dimension drawing
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Features

Performance Features of 71911 ACD/P4AQGB Bearing

71911 ACD/P4AQGB Bearing is crafted with chrome steel rings and balls, offering high precision for angular contact applications.
Its 25° contact angle ensures optimal load distribution, enhancing performance in demanding setups.

The phenolic cage maintains ball alignment, reducing friction and extending operational life.
With a dynamic radial load capacity of 10,980 lbf, it handles heavy loads efficiently.

Designed for high-speed applications, 71911 ACD/P4AQGB Bearing supports speeds up to 46,000 rpm.
Its universal matching feature allows flexible arrangements like back-to-back or face-to-face configurations.

The P4A tolerance class guarantees exceptional accuracy, making it suitable for precision machinery.
Operating between -30°C to 110°C, it performs reliably in varied temperature conditions.

Application

Key Fields for 71911 ACD/P4AQGB Bearing
71911 ACD/P4AQGB Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load distribution. The universal matching design makes it adaptable for complex setups like spindle assemblies.

In robotics, 71911 ACD/P4AQGB Bearing provides smooth motion control for articulated arms, thanks to its light preload and phenolic cage. Its high-speed capability (up to 46,000 rpm) suits demanding automation tasks.

For aerospace applications, 71911 ACD/P4AQGB Bearing’s P4A tolerance class meets strict requirements for navigation systems. The chrome steel construction handles both thrust and radial loads in compact spaces.

Medical imaging devices benefit from 71911 ACD/P4AQGB Bearing’s low vibration and consistent performance. The open design allows easy lubrication, extending service life in critical equipment.

In electric vehicle motors, 71911 ACD/P4AQGB Bearing supports high-speed rotors while maintaining energy efficiency. The matched set option simplifies installation in tandem or back-to-back configurations.

Q&A

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