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Super Precision Angular Contact Ball Bearings S71911 ACEGA/P4A

Super Precision Angular Contact Ball Bearings S71911 ACEGA/P4A

The S71911 ACEGA/P4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. Its compact 13mm width makes it suitable for space-sensitive applications.

With a 25° contact angle, it handles both radial and axial loads efficiently, supporting dynamic radial loads up to 3330 lbf. It spins smoothly at speeds up to 34,000 RPM, thanks to its phenolic cage and grease lubrication.

The sealed design keeps contaminants out, ensuring long-lasting performance in temperatures from -30°C to 110°C. Its P4A tolerance class guarantees exceptional precision for demanding tasks.

Ideal for high-speed applications like machine tool spindles or precision instruments. The bearing is interchangeable with SKF models and comes in a universal matching set for flexible mounting options (back-to-back, face-to-face, or tandem). Weighing just 0.17kg, it balances lightweight design with robust performance.

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Product Parameters

  • Part Number S71911 ACEGA/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 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • 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 3330 lbf
  • Static Radial Load 2250 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.17 kg
Super Precision Angular Contact Ball Bearings S71911 ACEGA/P4A dimension drawing
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Features

Performance Features of S71911 ACEGA/P4A Bearing

S71911 ACEGA/P4A 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 in S71911 ACEGA/P4A Bearing maintains ball alignment, reducing friction and wear.
With a maximum speed of 34,000 rpm, it excels in high-speed applications.

S71911 ACEGA/P4A Bearing operates smoothly within a temperature range of -30°C to 110°C.
Its sealed design and grease lubrication minimise maintenance requirements.

The P4A tolerance class ensures superior precision for demanding tasks.
S71911 ACEGA/P4A Bearing’s dynamic radial load capacity of 3330 lbf guarantees reliable performance.

Application

Super Precision Angular Contact Ball Bearings S71911 ACEGA/P4A excels in high-speed machine tool spindles, where its 25° contact angle ensures accurate radial and axial load distribution. The sealed design keeps contaminants out, extending service life in demanding industrial environments.

In automotive applications, S71911 ACEGA/P4A supports precision components like turbochargers and electric motor shafts, thanks to its extra-light preload and P4A tolerance class. The phenolic cage reduces friction, enhancing efficiency at speeds up to 34,000 rpm.

For robotics and automation, S71911 ACEGA/P4A’s compact 55mm×80mm×13mm size fits seamlessly into articulated arms and linear guides. Its chrome steel construction maintains dimensional stability even under rapid directional changes.

Medical imaging devices benefit from S71911 ACEGA/P4A’s smooth operation and grease lubrication, ensuring quiet performance in MRI scanners and X-ray systems. The matched bearing sets allow for back-to-back or face-to-face configurations as needed.

In aerospace systems, S71911 ACEGA/P4A handles combined loads in flight control mechanisms, where its -30°C to 110°C range suits varied operational conditions. The universal matching feature simplifies maintenance across different assembly types.

Q&A

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