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Super Precision Angular Contact Ball Bearings 71904 ACDTP/HCP4B

Super Precision Angular Contact Ball Bearings 71904 ACDTP/HCP4B

The 71904 ACDTP/HCP4B is a super precision angular contact ball bearing, measuring 20mm by 37mm by 9mm. Made from chrome steel with ceramic balls, it offers smooth operation and high durability.

With a 25° contact angle, it handles both radial and axial loads efficiently, supporting up to 1287 lbf dynamically. It spins at speeds up to 48,000 RPM, making it suitable for high-performance applications.

The phenolic cage ensures stability, while the open design allows for easy lubrication. It operates in temperatures from -30°C to 110°C, ideal for demanding environments.

This bearing is interchangeable with SKF models and comes in matched sets for precise alignment. Perfect for machine tools or high-speed spindles where accuracy is crucial.

Weighing just 0.033kg, it’s lightweight yet robust, meeting P4 tolerance standards for exceptional precision.

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Product Parameters

  • Part Number 71904 ACDTP/HCP4B
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.005mm to 0
  • Outer Dia 37 mm
  • Outer Dia Tolerance -0.006mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 15
  • Contact Angle 25°
  • 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 1287 lbf
  • Static Radial Load 686 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 48000 rpm
  • Weight 0.033 kg
  • Price（$） 144.882
Super Precision Angular Contact Ball Bearings 71904 ACDTP/HCP4B dimension drawing
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Features

How Does 71904 ACDTP/HCP4B Bearing Reduce Friction?

71904 ACDTP/HCP4B Bearing features ceramic balls and a phenolic cage, significantly reducing friction during operation.
Its 25° contact angle ensures smooth performance under angular loads, ideal for precision applications.
With a maximum speed of 48,000 rpm, it maintains efficiency without compromising durability.
The chrome steel rings provide added strength, while the open design allows for easy lubrication.

Application

Ideal for Precision: 71904 ACDTP/HCP4B Bearing
71904 ACDTP/HCP4B Bearing is a great fit for high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making it ideal for high-speed operations.

In robotics, 71904 ACDTP/HCP4B Bearing supports smooth movement in articulated arms and joints, thanks to its phenolic cage and P4 tolerance. Its lightweight design also helps in reducing overall system weight.

For medical imaging devices, 71904 ACDTP/HCP4B Bearing’s open design and ceramic balls provide reliable performance with minimal heat generation. The chrome steel rings add durability for long-term use in critical applications.

Automotive vs Aerospace: Applications of 71904 ACDTP/HCP4B Bearing
In automotive systems, 71904 ACDTP/HCP4B Bearing works well in electric motor shafts, offering low friction and high-speed capability. Its metric sizing ensures compatibility with various European and Asian models.

Aerospace applications benefit from 71904 ACDTP/HCP4B Bearing’s lightweight and high-precision design, particularly in flight control systems. The ceramic balls and phenolic cage withstand extreme conditions without compromising performance.

Q&A

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