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Super Precision Angular Contact Ball Bearings 71811 ACDGB/P4

Super Precision Angular Contact Ball Bearings 71811 ACDGB/P4

The 71811 ACDGB/P4 is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, measuring just 9mm wide. Made from chrome steel, it’s designed for high-speed applications, handling radial loads up to 2151 lbf.

With a 25° contact angle and P4 tolerance class, it offers smooth rotation at speeds up to 34,000 RPM. The phenolic cage ensures durability, while the open design allows for easy lubrication.

This bearing is suitable for universal matching in back-to-back, face-to-face, or tandem arrangements. Ideal for precision machinery like spindles or CNC equipment where accuracy and speed are key.

Weighing only 0.081kg, it’s lightweight yet robust, operating in temperatures from -30°C to 110°C. Compliant with industry standards for reliable performance.

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Product Parameters

  • Part Number 71811 ACDGB/P4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 4
  • 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 2151 lbf
  • Static Radial Load 2295 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.081 kg
Super Precision Angular Contact Ball Bearings 71811 ACDGB/P4 dimension drawing
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Features

Performance Features of 71811 ACDGB/P4 Bearing

71811 ACDGB/P4 Bearing is crafted with chrome steel rings and balls, ensuring durability and high performance.
Its 25° contact angle provides excellent radial and axial load handling, making it versatile for various applications.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 34,000 rpm, it delivers reliable performance in high-speed scenarios.

71811 ACDGB/P4 Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its P4 tolerance class ensures precision, making it suitable for demanding industrial uses.

The light preload (Class B) minimises vibration, contributing to quieter operation.
Its universal matching capability allows flexible arrangements like back-to-back or face-to-face configurations.

Application

Key Fields for 71811 ACDGB/P4 Bearing
71811 ACDGB/P4 Bearing is commonly used in high-speed machine tools, where its precision and light preload ensure smooth operation. The 25° contact angle makes it suitable for handling combined radial and axial loads efficiently.

In robotics, 71811 ACDGB/P4 Bearing supports articulated arms and joints, providing reliable movement with minimal friction. Its phenolic cage material helps reduce weight while maintaining stability during rapid motions.

For aerospace applications, 71811 ACDGB/P4 Bearing’s P4 tolerance class guarantees accuracy in critical components like gyroscopes. The chrome steel construction ensures durability even under extreme temperature variations.

Automotive enthusiasts might appreciate 71811 ACDGB/P4 Bearing in performance gearboxes, where its high-speed capability enhances shifting precision. The open design allows for custom lubrication to suit specific driving conditions.

In medical imaging devices, 71811 ACDGB/P4 Bearing’s low vibration characteristics contribute to clearer scan results. Its matched arrangement options offer flexibility for custom configurations in compact spaces.

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