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Super Precision Angular Contact Ball Bearings 71911 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 71911 ACDGA/P4A

The 71911 ACDGA/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 4095 lbf and spins smoothly at speeds up to 46,000 RPM.

Its 25° contact angle and extra light preload ensure precise performance in high-speed applications. The open design and phenolic cage make it lightweight yet robust, suitable for temperatures from -30°C to 110°C.

This bearing is part of a universal matching set, allowing flexible arrangements like back-to-back or face-to-face. Ideal for machine tools or spindles where accuracy and speed are crucial.

Weighing just 0.18kg, it’s easy to handle and install. Compliant with P4A tolerance standards for reliable operation.

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Product Parameters

  • Part Number 71911 ACDGA/P4A
  • 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 13 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 No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4095 lbf
  • Static Radial Load 3082 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 46000 rpm
  • Weight 0.18 kg
  • Price（$） 19.323
Super Precision Angular Contact Ball Bearings 71911 ACDGA/P4A dimension drawing
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Features

Performance Features of 71911 ACDGA/P4A Bearing

71911 ACDGA/P4A Bearing is designed with a 25° contact angle, optimising its performance in angular contact applications.
The chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 4095 lbf, it handles demanding conditions reliably.
Its extra light preload (Class A) enhances precision, making it suitable for high-speed operations up to 46,000 rpm.

The open design allows for easy lubrication, maintaining smooth operation.
71911 ACDGA/P4A Bearing operates efficiently within a temperature range of -30°C to 110°C.

Application

Super Precision Angular Contact Ball Bearings 71911 ACDGA/P4A are commonly used in high-speed machine spindles, where their 25° contact angle ensures accurate radial and axial load distribution. The P4A tolerance class makes them suitable for applications demanding tight precision, such as CNC machining centres.

In robotics, 71911 ACDGA/P4A Bearings provide smooth motion control in articulated arms, thanks to their phenolic cage reducing friction at high speeds. Their lightweight design also helps improve energy efficiency in automated systems.

For aerospace components, 71911 ACDGA/P4A Bearings offer reliable performance in navigation systems, where their chrome steel construction withstands varying operational temperatures. The extra light preload further enhances their responsiveness in critical flight controls.

Medical imaging devices benefit from 71911 ACDGA/P4A Bearings’ low vibration characteristics, ensuring clear scans in MRI and CT machines. The open design allows for easy lubrication, maintaining consistent performance over long periods.

In electric vehicle motors, 71911 ACDGA/P4A Bearings support high-speed rotation while managing angular loads efficiently. Their compatibility with tandem or back-to-back arrangements makes them versatile for different motor configurations.

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