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Super Precision Angular Contact Ball Bearings 71938 CD/HCP4A

Super Precision Angular Contact Ball Bearings 71938 CD/HCP4A

The 71938 CD/HCP4A 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 38700 lbf.

The open design allows for easy lubrication, while the phenolic cage enhances durability. With a maximum speed of 9000 RPM, it handles demanding conditions in temperatures from -30°C to 110°C.

This bearing is interchangeable with SKF models and comes in a P4 tolerance class for exceptional accuracy. Ideal for machine tools or high-speed spindles where precision and reliability are key.

Weighing 3.64kg, it’s a robust choice for industrial use. The matched arrangement option provides added flexibility for complex setups.

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Product Parameters

  • Part Number 71938 CD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 33 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 22.225 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 38700 lbf
  • Static Radial Load 49500 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 9000 rpm
  • Weight 3.64 kg
  • Price（$） 3722.94
Super Precision Angular Contact Ball Bearings 71938 CD/HCP4A dimension drawing
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Features

Why Choose 71938 CD/HCP4A Bearing for Precision Tasks?

71938 CD/HCP4A Bearing features a 15° contact angle, ideal for handling combined radial and axial loads with high precision.
Its ceramic balls and chrome steel rings ensure minimal friction and extended service life.

The phenolic cage maintains ball alignment, enhancing stability even at speeds up to 9,000 rpm.
With a P4 tolerance class, it delivers exceptional accuracy for demanding applications.

71938 CD/HCP4A Bearing operates smoothly in temperatures from -30° to 110°C, ensuring reliability in varied conditions.
Its preload availability allows for tailored performance, reducing vibration and noise.

Application

Industrial Uses of 71938 CD/HCP4A Bearing
71938 CD/HCP4A Bearing is commonly used in high-precision machine tools, where its 15° contact angle ensures accurate radial and axial load distribution. The ceramic balls reduce friction, making it ideal for high-speed spindle applications.

Where Is 71938 CD/HCP4A Bearing Used?
You’ll often find 71938 CD/HCP4A Bearing in aerospace components, such as helicopter gearboxes, due to its ability to handle both radial and thrust loads. The phenolic cage adds durability in demanding environments.

Optimized for Performance: 71938 CD/HCP4A Bearing
71938 CD/HCP4A Bearing excels in robotics, particularly in articulated arms where smooth motion is critical. Its P4 tolerance class guarantees precision, while the open design allows for easy lubrication.

Automotive vs Aerospace: Applications of 71938 CD/HCP4A Bearing
In automotive systems, 71938 CD/HCP4A Bearing supports high-performance transmissions, thanks to its ceramic balls. For aerospace, it’s trusted in landing gear systems due to its reliability under extreme conditions.

Practical Applications of 71938 CD/HCP4A Bearing
71938 CD/HCP4A Bearing is a go-to for medical imaging devices, where its low vibration ensures clear scans. The chrome steel rings provide long-lasting performance, even in continuous operation.

Q&A

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