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Super Precision Angular Contact Ball Bearings 71911 CD/HCP4AQBCA

Super Precision Angular Contact Ball Bearings 71911 CD/HCP4AQBCA

The 71911 CD/HCP4AQBCA 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 comes in a matched set of four bearings for balanced performance.

This bearing handles radial loads up to 11408 lbf and reaches speeds of 39000 RPM, thanks to its ceramic balls and phenolic cage. Its extra-light preload ensures smooth operation with minimal friction.

The open design allows for easy lubrication, while the P4A tolerance class guarantees high precision. Ideal for applications like machine tool spindles or high-speed robotics.

Weighing 0.61kg, it operates efficiently in temperatures from -30°C to 110°C. Its interchangeable design with SKF bearings makes it a versatile choice for precision engineering needs.

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Product Parameters

  • Part Number 71911 CD/HCP4AQBCA
  • 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 52 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 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 11408 lbf
  • Static Radial Load 13162 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 39000 rpm
  • Weight 0.61 kg
Super Precision Angular Contact Ball Bearings 71911 CD/HCP4AQBCA dimension drawing
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Features

Engineered for Precision: 71911 CD/HCP4AQBCA Bearing

71911 CD/HCP4AQBCA Bearing features a 15° contact angle, optimised for high-precision angular contact applications.
The chrome steel rings and ceramic balls ensure smooth operation and reduced friction.

With a dynamic radial load capacity of 11408 lbf, it handles demanding tasks reliably.
The phenolic cage maintains ball alignment, enhancing durability and performance.

Designed for extra light preload, 71911 CD/HCP4AQBCA Bearing is ideal for high-speed applications up to 39,000 rpm.
Its matched arrangement of four bearings ensures consistent performance in precision setups.

Application

Where Is 71911 CD/HCP4AQBCA Bearing Used?
71911 CD/HCP4AQBCA Bearing is commonly seen in high-precision machine tools, where its angular contact design helps maintain accuracy during heavy cutting operations. The ceramic balls reduce friction, allowing smoother rotations at high speeds.

In aerospace applications, 71911 CD/HCP4AQBCA Bearing supports components like turbine shafts, thanks to its extra-light preload and P4A tolerance class. The phenolic cage ensures stability even under extreme temperature variations.

For robotics, 71911 CD/HCP4AQBCA Bearing is ideal for articulated arms, where its matched arrangement of four bearings provides balanced load distribution. The open seal design allows for easy relubrication in long-duty cycles.

Medical imaging devices benefit from 71911 CD/HCP4AQBCA Bearing’s low vibration and high-speed capabilities. The chrome steel rings and ceramic balls ensure quiet operation, crucial for sensitive diagnostic equipment.

In automation systems, 71911 CD/HCP4AQBCA Bearing is often used in spindle drives, where its 15° contact angle optimises radial and axial load handling. The metric sizing makes it compatible with European-designed machinery.

Q&A

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