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Super Precision Angular Contact Ball Bearings S71911 CD/P4ADGB

Super Precision Angular Contact Ball Bearings S71911 CD/P4ADGB

The S71911 CD/P4ADGB 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 7020 lbf and spins smoothly at speeds up to 34,000 RPM.

Its sealed design keeps grease in and contaminants out, while the phenolic cage ensures quiet operation. The bearing works well in temperatures from -30°C to 110°C.

This model is part of a matched set of two, suitable for universal mounting in back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tool spindles or industrial pumps.

Weighing just 0.37kg, it’s lightweight yet robust for its size. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number S71911 CD/P4ADGB
  • 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 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 7020 lbf
  • Static Radial Load 6525 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.37 kg
Super Precision Angular Contact Ball Bearings S71911 CD/P4ADGB dimension drawing
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Features

Performance Features of S71911 CD/P4ADGB Bearing

S71911 CD/P4ADGB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide excellent durability, supporting dynamic radial loads up to 7020 lbf.

The sealed design and grease lubrication ensure smooth operation, even at high speeds of 34,000 rpm.

With universal matching capability, it offers flexibility in back-to-back, face-to-face, or tandem arrangements.

Application

Super Precision Angular Contact Ball Bearings S71911 CD/P4ADGB excels in high-speed machine tool spindles, where its 15° contact angle ensures accurate radial and axial load distribution. The sealed design keeps contaminants out, extending service life in demanding industrial environments.

In aerospace applications, S71911 CD/P4ADGB supports critical components like turbine shafts, thanks to its P4A tolerance class and universal matching capability. The phenolic cage reduces friction, making it ideal for high-RPM scenarios.

For medical imaging devices, S71911 CD/P4ADGB’s grease lubrication and chrome steel construction deliver quiet, reliable operation. Its light preload ensures smooth rotation in precision instruments like CT scanners.

Automotive electric motors benefit from S71911 CD/P4ADGB’s dynamic radial load capacity, which handles the demands of high-performance drivetrains. The metric sizing simplifies integration with European and Asian vehicle designs.

In robotics, S71911 CD/P4ADGB’s tandem arrangement options provide flexibility for compact, high-precision joints. Its temperature range suits both indoor and outdoor automated systems.

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