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Super Precision Angular Contact Ball Bearings 71938 CD/HCP4ADBB

Super Precision Angular Contact Ball Bearings 71938 CD/HCP4ADBB

The 71938 CD/HCP4ADBB is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, designed for high-performance applications. Made from chrome steel with ceramic balls, it offers excellent durability and smooth operation.

This bearing handles radial loads up to 62100 lbf and can reach speeds of 11000 RPM. Its 15° contact angle and light preload ensure precise movement, ideal for demanding machinery.

The open design allows easy lubrication, while the phenolic cage provides stability. It comes as a matched set of two bearings, suitable for paired arrangements.

With a temperature range of -30°C to 110°C, it works well in various environments. Perfect for precision equipment like machine tools or high-speed spindles where accuracy is key.

Weighing 7.27kg, it’s robust yet designed for efficiency. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71938 CD/HCP4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 66 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 28
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 62100 lbf
  • Static Radial Load 99000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 7.27 kg
Super Precision Angular Contact Ball Bearings 71938 CD/HCP4ADBB dimension drawing
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Features

Performance Features of 71938 CD/HCP4ADBB Bearing

71938 CD/HCP4ADBB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability and reduce friction during high-speed operation.

The phenolic cage ensures smooth performance, even at speeds up to 11,000 rpm.
With a dynamic radial load capacity of 62,100 lbf, it handles demanding conditions reliably.

71938 CD/HCP4ADBB Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its precision P4A tolerance class guarantees consistent performance in critical applications.

The matched arrangement of two bearings provides stability and balanced load distribution.
This design reduces vibration, making it suitable for high-precision machinery.

Application

Industrial Uses of 71938 CD/HCP4ADBB Bearing
71938 CD/HCP4ADBB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for high-speed operations.

In aerospace applications, 71938 CD/HCP4ADBB Bearing supports critical components like turbine shafts, thanks to its light preload and phenolic cage. The P4A tolerance class guarantees consistent performance under demanding conditions.

For automation systems, 71938 CD/HCP4ADBB Bearing excels in robotic arms, providing smooth movement with minimal vibration. The matched arrangement of two bearings enhances stability in dynamic loads.

Medical imaging devices benefit from 71938 CD/HCP4ADBB Bearing’s chrome steel rings, which offer durability in high-use scenarios. The open design allows for easy lubrication, ensuring long service life.

In electric vehicle motors, 71938 CD/HCP4ADBB Bearing handles angular loads efficiently, contributing to quieter and more efficient operation. The metric sizing ensures compatibility with a wide range of motor designs.

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