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Super Precision Angular Contact Ball Bearings 71911 ACBGA/P4A

Super Precision Angular Contact Ball Bearings 71911 ACBGA/P4A

The 71911 ACBGA/P4A 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 angular contact loads, offering smooth operation at speeds up to 34,000 RPM.

Its open design and phenolic cage ensure durability and easy maintenance, while the extra light preload (Class A) enhances performance in precision applications. The bearing can handle dynamic radial loads up to 2106 lbf and operates in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings and comes in a universal matching set of two, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision machinery like spindles or CNC equipment where accuracy is crucial.

Weighing just 0.18kg, it’s lightweight yet robust, making it a reliable choice for demanding applications. Compliant with P4A tolerance standards for exceptional precision.

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Product Parameters

  • Part Number 71911 ACBGA/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 5.556 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 2
  • 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 2106 lbf
  • Static Radial Load 1721 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.18 kg
Super Precision Angular Contact Ball Bearings 71911 ACBGA/P4A dimension drawing
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Features

How Is 71911 ACBGA/P4A Bearing Engineered for Reliability?

71911 ACBGA/P4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
Its chrome steel construction ensures durability and resistance to wear in high-speed applications.

With a dynamic radial load capacity of 2106 lbf, it delivers consistent performance under stress.
The phenolic cage maintains ball alignment, reducing friction and extending service life.

71911 ACBGA/P4A Bearing operates smoothly at speeds up to 34,000 rpm, making it ideal for precision tasks.
Its open design allows for easy lubrication, ensuring minimal maintenance requirements.

The P4A tolerance class guarantees high precision, suitable for demanding industrial applications.
Its universal matching capability offers flexibility in various mounting configurations.

Application

Essential Roles of 71911 ACBGA/P4A Bearing
71911 ACBGA/P4A Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The open design and phenolic cage make it suitable for high-speed operations without compromising stability.

How Does 71911 ACBGA/P4A Bearing Improve Performance?
In robotics and automation systems, 71911 ACBGA/P4A Bearing enhances motion control with its extra-light preload and P4A tolerance class. Its chrome steel construction provides durability in repetitive, high-stress applications.

Built for Heavy-Duty Use: 71911 ACBGA/P4A Bearing
71911 ACBGA/P4A Bearing excels in aerospace applications, such as helicopter rotor systems, where its high-speed capability and temperature resistance are critical. The matched arrangement options add versatility for custom setups.

Medical vs Industrial: Where 71911 ACBGA/P4A Bearing Excels
For medical imaging devices, 71911 ACBGA/P4A Bearing offers smooth, quiet operation due to its precision engineering. In industrial pumps, its dynamic load capacity ensures reliable performance under continuous use.

Where to Use 71911 ACBGA/P4A Bearing
71911 ACBGA/P4A Bearing is a common choice in electric vehicle motors, where its angular contact design manages combined loads efficiently. The lubricated setup reduces maintenance needs in demanding environments.

Q&A

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