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Super Precision Angular Contact Ball Bearings 71911 CD/P4ATBTA

Super Precision Angular Contact Ball Bearings 71911 CD/P4ATBTA

The 71911 CD/P4ATBTA 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 operates smoothly at speeds up to 34,000 RPM.

Its 15° contact angle and matched arrangement of three bearings (TBT) provide excellent stability for high-precision applications. The phenolic cage ensures durability and reduces friction during high-speed rotations.

This bearing is lubricated for easy maintenance and performs reliably in temperatures from -30°C to 110°C. Ideal for machine tools, spindles, or other applications requiring tight tolerances and smooth operation.

Weighing 0.54kg, it’s a robust yet lightweight solution for demanding environments. Compliant with P4A tolerance class for superior precision.

The 71911 CD/P4ATBTA comes in a set of three bearings, designed for matched arrangements to handle complex load distributions. Its open seal type allows for easy inspection and relubrication when needed.

With a ball diameter of 7.938mm and 23 balls, it ensures even load distribution and minimal vibration. The extra light preload (Class A) makes it suitable for applications requiring minimal friction.

This model is interchangeable with SKF bearings, offering a reliable alternative for replacements. Perfect for high-speed machinery where precision and durability are critical.

The chrome steel construction and phenolic cage provide a long service life, even under demanding conditions.

This angular contact bearing is ideal for applications requiring both radial and axial load support, thanks to its 15° contact angle. The matched set of three bearings ensures balanced performance in high-precision setups.

Its dynamic radial load capacity of 9360 lbf and static radial load of 9900 lbf make it suitable for heavy-duty applications. The P4A tolerance class guarantees exceptional accuracy and smooth operation.

The open design allows for easy maintenance, while the phenolic cage reduces friction and wear. It’s a great choice for spindles, grinders, or other high-speed machinery.

Weighing just 0.54kg, it’s a lightweight yet durable option for precision engineering needs.

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Product Parameters

  • Part Number 71911 CD/P4ATBTA
  • 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 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • 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
Super Precision Angular Contact Ball Bearings 71911 CD/P4ATBTA dimension drawing
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Features

Performance Features of 71911 CD/P4ATBTA Bearing

71911 CD/P4ATBTA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability and smooth operation under high-speed conditions.

The phenolic cage in 71911 CD/P4ATBTA Bearing maintains ball alignment, reducing friction and wear.
With a dynamic radial load capacity of 9360 lbf, it handles demanding tasks efficiently.

71911 CD/P4ATBTA Bearing operates at speeds up to 34,000 rpm, making it suitable for precision applications.
Its extra light preload ensures minimal resistance, enhancing performance.

The matched arrangement of three bearings in 71911 CD/P4ATBTA Bearing provides stability and balanced load distribution.
This design is ideal for applications requiring high precision and reliability.

71911 CD/P4ATBTA Bearing functions in temperatures from -30°C to 110°C, ensuring consistent performance.
Its open seal type allows for easy lubrication and maintenance.

Application

Key Fields for 71911 CD/P4ATBTA Bearing
71911 CD/P4ATBTA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of three bearings provides excellent stability for demanding operations.

In aerospace applications, 71911 CD/P4ATBTA Bearing supports critical components like turbine shafts, thanks to its extra light preload and high-speed capability. The phenolic cage material helps reduce friction at elevated temperatures.

For robotics, 71911 CD/P4ATBTA Bearing is a reliable choice for articulated arms, offering smooth movement under angular loads. Its P4A tolerance class guarantees consistent performance in repetitive tasks.

Medical imaging devices benefit from 71911 CD/P4ATBTA Bearing’s precision, ensuring quiet and vibration-free operation. The chrome steel construction also enhances durability in sterilisation processes.

In automation systems, 71911 CD/P4ATBTA Bearing is often found in CNC machinery, where its high dynamic radial load capacity supports heavy cutting operations. The lubricated design further extends service life in continuous use.

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