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Super Precision Angular Contact Ball Bearings 71911 ACD/P4ATBTB

Super Precision Angular Contact Ball Bearings 71911 ACD/P4ATBTB

The 71911 ACD/P4ATBTB 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 25° contact angle and comes in a set of three matched bearings for balanced performance.

This bearing handles radial loads up to 8932 lbf and operates smoothly at speeds up to 46,000 RPM. Its phenolic cage ensures durability, while the open design allows for easy lubrication and maintenance.

The light preload (Class B) enhances stability, making it ideal for high-precision applications. Suitable for use in machine tools or spindle systems where accuracy is crucial.

Weighing 0.54kg, it’s designed for temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71911 ACD/P4ATBTB
  • 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 25°
  • 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 Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 8932 lbf
  • Static Radial Load 9338 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 46000 rpm
  • Weight 0.54 kg
  • Price（$） 34.29
Super Precision Angular Contact Ball Bearings 71911 ACD/P4ATBTB dimension drawing
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Features

Performance Features of 71911 ACD/P4ATBTB Bearing

71911 ACD/P4ATBTB Bearing is designed with a 25° contact angle, ideal for handling combined radial and axial loads.
Its chrome steel rings and balls ensure durability, while the phenolic cage provides smooth operation at high speeds.

With a dynamic radial load capacity of 8932 lbf, it performs reliably in demanding applications.
The P4A tolerance class guarantees precision, making it suitable for high-accuracy machinery.

71911 ACD/P4ATBTB Bearing operates efficiently at speeds up to 46,000 rpm.
Its open design allows for easy lubrication, ensuring consistent performance over time.

The matched arrangement of three bearings enhances stability and load distribution.
This design reduces vibration, making it perfect for precision engineering tasks.

Application

Key Fields for 71911 ACD/P4ATBTB Bearing
71911 ACD/P4ATBTB 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 stability in demanding operations.

In aerospace applications, 71911 ACD/P4ATBTB Bearing handles both radial and axial loads in components like landing gear systems. Its phenolic cage reduces friction, making it suitable for high-speed environments.

For robotics, 71911 ACD/P4ATBTB Bearing offers smooth motion in articulated arms and joints. The light preload ensures minimal resistance, enhancing precision in automated tasks.

Medical imaging devices benefit from 71911 ACD/P4ATBTB Bearing’s consistent performance and low noise. The chrome steel construction ensures durability in critical healthcare equipment.

In electric motors, 71911 ACD/P4ATBTB Bearing supports high-speed rotations with minimal heat generation. Its metric sizing makes it compatible with various European and Asian motor designs.

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