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Super Precision Angular Contact Ball Bearings 71911 CDGB/P4A

Super Precision Angular Contact Ball Bearings 71911 CDGB/P4A

The 71911 CDGB/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 15° contact angle and is designed for light preload applications, offering smooth operation.

With a dynamic radial load capacity of 4388 lbf, it handles high speeds up to 34,000 RPM. The open design allows for easy lubrication, while the phenolic cage ensures durability and reduced friction.

This bearing is part of a universal matching set, suitable for arrangements like back-to-back or face-to-face. Its P4A tolerance class guarantees exceptional precision for demanding tasks.

Ideal for precision machinery like spindles or high-speed tools, it performs reliably in temperatures from -30°C to 110°C. Weighing just 0.18kg, it’s lightweight yet robust for its size.

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Product Parameters

  • Part Number 71911 CDGB/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 23
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • 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 4388 lbf
  • Static Radial Load 3285 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.18 kg
  • Price（$） 88.83
Super Precision Angular Contact Ball Bearings 71911 CDGB/P4A dimension drawing
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Features

Performance Features of 71911 CDGB/P4A Bearing

71911 CDGB/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 4388 lbf.

The phenolic cage maintains ball alignment, reducing friction and enabling smooth operation at speeds up to 34,000 rpm.
With a P4A tolerance class, it offers high precision for demanding industrial applications.

71911 CDGB/P4A Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

Application

Key Fields for 71911 CDGB/P4A Bearing
71911 CDGB/P4A Bearing is commonly used in high-speed machine tools, where its precision and light preload ensure smooth operation. The angular contact design handles both radial and axial loads efficiently.

In robotics, 71911 CDGB/P4A Bearing supports articulated arms, providing the necessary accuracy for repetitive tasks. Its phenolic cage reduces friction, making it suitable for continuous use.

For medical imaging devices, 71911 CDGB/P4A Bearing’s chrome steel construction offers reliability. The P4A tolerance class ensures minimal vibration, crucial for clear imaging results.

Automotive applications include electric vehicle motors, where 71911 CDGB/P4A Bearing’s high-speed capability is beneficial. The open design allows for easy lubrication, extending service life.

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