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Super Precision Angular Contact Ball Bearings 71911 CD/P4ATGB

Super Precision Angular Contact Ball Bearings 71911 CD/P4ATGB

The 71911 CD/P4ATGB is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 9360 lbf and reaches speeds of 34,000 RPM, making it suitable for high-performance applications.

Its 15° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face setups. The phenolic cage ensures smooth operation and durability under light preload conditions.

This bearing works well in temperatures from -30°C to 110°C and comes pre-lubricated for immediate use. Ideal for precision machinery, spindles, or tooling systems where accuracy is key.

Weighing 0.54kg, it’s part of a matched set of three bearings, offering consistent performance. Compliant with P4A tolerance class for exceptional precision.

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Product Parameters

  • Part Number 71911 CD/P4ATGB
  • 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 39 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 Universal matching
  • 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 9360 lbf
  • Static Radial Load 9900 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.54 kg
  • Price（$） 251.361
Super Precision Angular Contact Ball Bearings 71911 CD/P4ATGB dimension drawing
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Features

Performance Features of 71911 CD/P4ATGB Bearing

71911 CD/P4ATGB Bearing is designed for super precision applications with a 15° contact angle, ensuring accurate angular load handling.
Its chrome steel rings and balls provide high durability, supporting dynamic radial loads up to 9360 lbf.

The phenolic cage maintains ball alignment, reducing friction and noise during high-speed operation.
With a maximum speed of 34,000 rpm, it delivers reliable performance in demanding conditions.

71911 CD/P4ATGB Bearing’s universal matching design allows flexible arrangements like back-to-back or face-to-face.
Its P4A tolerance class ensures consistent precision, making it suitable for high-accuracy machinery.

The open seal type and lubrication enhance smooth operation, even in temperatures ranging from -30°C to 110°C.
This bearing’s lightweight design at 0.54 kg balances strength and efficiency.

Application

Key Fields for 71911 CD/P4ATGB Bearing
71911 CD/P4ATGB Bearing is commonly used in high-precision machine tools, where its 15° contact angle ensures accurate radial and axial load distribution. The open design and phenolic cage make it suitable for high-speed operations without compromising stability.

In aerospace applications, 71911 CD/P4ATGB Bearing supports critical components like turbine shafts, thanks to its P4A tolerance class and universal matching capability. The chrome steel construction provides durability under extreme conditions.

For robotics, 71911 CD/P4ATGB Bearing excels in articulated arms and joints, where its light preload and high-speed capacity enhance movement precision. The lubricated design also reduces maintenance needs in continuous operation.

Medical imaging devices benefit from 71911 CD/P4ATGB Bearing’s consistent performance and low friction. Its temperature range and static load capacity ensure reliability in sensitive diagnostic equipment.

In automotive testing rigs, 71911 CD/P4ATGB Bearing handles dynamic loads with ease, making it ideal for simulating real-world conditions. The metric sizing ensures compatibility with a variety of testing setups.

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