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Super Precision Angular Contact Ball Bearings 71938 CD/HCP4ATBTA

Super Precision Angular Contact Ball Bearings 71938 CD/HCP4ATBTA

The 71938 CD/HCP4ATBTA is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, designed for high-performance applications. Its 15° contact angle and ceramic balls ensure smooth operation under heavy radial loads up to 83475 lbf.

This bearing set includes three matched units in a TBT arrangement, offering extra light preload for precise alignment. The phenolic cage and chrome steel rings provide durability, while the open design allows for easy lubrication.

With a maximum speed of 16250 RPM and a temperature range of -30°C to 110°C, it’s suitable for demanding environments like machine tool spindles or high-speed robotics. Weighing 10.9kg, it’s robust yet designed for precision.

Interchangeable with SKF bearings, this model meets P4A tolerance standards for exceptional accuracy. Ideal for applications where low friction and high-speed performance are critical.

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Product Parameters

  • Part Number 71938 CD/HCP4ATBTA
  • 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 99 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 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 83475 lbf
  • Static Radial Load 147375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 10.9 kg
Super Precision Angular Contact Ball Bearings 71938 CD/HCP4ATBTA dimension drawing
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Features

Performance Features of 71938 CD/HCP4ATBTA Bearing

71938 CD/HCP4ATBTA Bearing is designed with a 15° contact angle, optimising load distribution for precision tasks.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage maintains ball alignment, ensuring smooth operation even at high speeds.
With a maximum speed of 16,250 rpm, it delivers reliable performance in demanding applications.

71938 CD/HCP4ATBTA Bearing’s dynamic radial load capacity of 83,475 lbf makes it suitable for heavy-duty use.
Its extra light preload (Class A) ensures minimal vibration and noise during operation.

The matched arrangement of three bearings (TBT) provides enhanced stability and load-sharing capabilities.
This design is ideal for applications requiring high precision and long service life.

Operating within a temperature range of -30°C to 110°C, 71938 CD/HCP4ATBTA Bearing performs consistently in various environments.
Its lubricated design reduces maintenance needs while ensuring optimal performance.

Application

Industrial Uses of 71938 CD/HCP4ATBTA Bearing
71938 CD/HCP4ATBTA 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 suitable for high-speed operations.

In aerospace applications, 71938 CD/HCP4ATBTA Bearing supports critical components like turbine shafts, thanks to its extra light preload and P4A tolerance class. The phenolic cage adds durability in demanding environments.

For automation systems, 71938 CD/HCP4ATBTA Bearing excels in robotic arms, providing smooth movement under angular loads. Its matched arrangement of three bearings enhances stability in complex setups.

Medical imaging devices benefit from 71938 CD/HCP4ATBTA Bearing’s precision, ensuring reliable performance in scanners and diagnostic equipment. The chrome steel rings offer long-lasting wear resistance.

In electric vehicle drivetrains, 71938 CD/HCP4ATBTA Bearing handles high radial loads efficiently. The lubricated design reduces maintenance needs, making it a practical choice for automotive engineers.

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