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Super Precision Angular Contact Ball Bearings 71911 CB/HCP4A

Super Precision Angular Contact Ball Bearings 71911 CB/HCP4A

The 71911 CB/HCP4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from chrome steel for durability. It features a 15° contact angle and handles radial loads up to 2239 lbf, spinning smoothly at speeds up to 43,000 RPM.

Its open design and phenolic cage ensure low friction and long service life, while the ceramic balls enhance performance. The bearing comes preloaded and matched for precise alignment in demanding applications.

Ideal for high-speed machinery like spindles or CNC tools, it operates in temperatures from -30°C to 110°C. Weighing just 0.17kg, it’s lightweight yet robust for its size.

This model is interchangeable with SKF bearings, making it a reliable choice for replacements. Compliant with P4 tolerance standards, it offers exceptional accuracy for precision engineering tasks.

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Product Parameters

  • Part Number 71911 CB/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.007mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 5.556 mm
  • Ball Qty 28
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 2239 lbf
  • Static Radial Load 1834 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 43000 rpm
  • Weight 0.17 kg
  • Price（$） 439.875
Super Precision Angular Contact Ball Bearings 71911 CB/HCP4A dimension drawing
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Features

Performance Features of 71911 CB/HCP4A Bearing

71911 CB/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.
The phenolic cage ensures smooth operation, even at high speeds up to 43,000 rpm.
With a dynamic radial load capacity of 2239 lbf, it delivers reliable performance in precision tasks.

Application

Common Applications of 71911 CB/HCP4A Bearing
71911 CB/HCP4A Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for applications demanding smooth operation.

In the automotive sector, 71911 CB/HCP4A Bearing supports performance gearboxes and electric motor systems, thanks to its high-speed capability and low heat generation. The phenolic cage adds durability in demanding conditions.

For robotics, 71911 CB/HCP4A Bearing excels in articulated arms and precision joints, where its P4 tolerance class guarantees consistent movement. The open design allows for easy lubrication, extending service life.

Medical imaging devices benefit from 71911 CB/HCP4A Bearing’s quiet operation and reliability, crucial for sensitive diagnostic equipment. The chrome steel rings ensure long-term performance in sterile environments.

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