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Super Precision Angular Contact Ball Bearings 71911 ACD/P4ADGA

Super Precision Angular Contact Ball Bearings 71911 ACD/P4ADGA

The 71911 ACD/P4ADGA 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 comes in a universal matching set of two bearings.

This model handles radial loads up to 6660 lbf and achieves speeds of 34,000 RPM, thanks to its phenolic cage and extra-light preload. Its open design allows for easy lubrication and maintenance.

The bearing operates smoothly in temperatures from -30°C to 110°C, making it suitable for demanding environments. Its P4A tolerance class ensures exceptional accuracy for precision applications.

Ideal for high-speed machinery like spindles or CNC equipment, where precise alignment and low friction are crucial. Weighing 0.36kg, it offers a balance of strength and lightweight performance. Compatible with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71911 ACD/P4ADGA
  • 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 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • 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 6660 lbf
  • Static Radial Load 6188 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.36 kg
  • Price（$） 218.529
Super Precision Angular Contact Ball Bearings 71911 ACD/P4ADGA dimension drawing
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Features

Performance Features of 71911 ACD/P4ADGA Bearing

71911 ACD/P4ADGA Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.
Its 25° contact angle allows for efficient handling of combined radial and axial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a dynamic radial load capacity of 6660 lbf, it performs reliably in demanding applications.

71911 ACD/P4ADGA Bearing supports high-speed operations up to 34,000 rpm without compromising performance.
Its universal matching design offers flexibility for various mounting configurations.

The extra light preload ensures minimal friction, making it ideal for precision tasks.
Operating within a temperature range of -30°C to 110°C, it adapts to diverse environmental conditions.

Lubrication is optimised for extended service life, reducing maintenance requirements.
Its P4A tolerance class guarantees consistent accuracy and reliability.

Application

Industrial Uses of 71911 ACD/P4ADGA Bearing
71911 ACD/P4ADGA Bearing is commonly used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The universal matching feature allows flexible arrangements, making it suitable for complex spindle designs.

In robotics, 71911 ACD/P4ADGA Bearing supports articulated arms and joints, thanks to its extra-light preload and smooth operation. The phenolic cage reduces friction, enhancing performance in repetitive motion applications.

For aerospace components, 71911 ACD/P4ADGA Bearing’s P4A tolerance class meets strict precision requirements. Its chrome steel construction withstands high speeds, ideal for turbine systems and flight control mechanisms.

Where Is 71911 ACD/P4ADGA Bearing Used?
You’ll find 71911 ACD/P4ADGA Bearing in medical imaging devices, where its low vibration and high-speed capability ensure clear scans. The open design simplifies lubrication, extending service life in critical healthcare equipment.

Automotive vs Aerospace: Applications of 71911 ACD/P4ADGA Bearing
In automotive gearboxes, 71911 ACD/P4ADGA Bearing handles angular loads efficiently, while in aerospace, its tandem arrangement supports thrust requirements. The metric sizing ensures compatibility across both industries.

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