71932 ACD/HCP4ADT

Hybrid Ceramic Super Precision Bearings

71932 ACD/HCP4ADT Hybrid Ceramic Super Precision Bearings
71932 ACD/HCP4ADT Hybrid Ceramic Super Precision Bearings

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Part No.
Part No. 71932 ACD/HCP4ADT

Basic Information

System of measurement Metric
Weight 4.46 kg
Tolerance class P4A
Seal type Open
For load direction Angular Contact

Main Dimensions

Bore diameter 160 mm
Bore diameter tolerance -0.004mm to 0
Outside diameter 220 mm
Outside diameter tolerance -0.004mm to 0
Width 56 mm
Width tolerance -0.2mm to 0
Contact angle 25 °

Ball & Washer Dimensions

Ball diameter 19.05 mm
Ball quantity 28

Performance

Temperature range - 30°C to 110 °C
Radial dynamic load rating 44775 lbf
Radial static load rating 68625 lbf
Limiting speed 11 X 1000 rpm
Lubrication Lubricated
Matched arrangement Duplex Tandem (DT)
Number of bearings in matched set 2
Universal matching bearing No (Standard)
Preload Available

Materials

Ring material Chrome Steel
Ball material Ceramic
Cage material Phenolic
Technical Drawings No drawings available at the moment, will be launched soon
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71932 ACD/HCP4ADT Bearing Product Overview & Core Advantages

The 71932 ACD/HCP4ADT is a precision angular contact ball bearing configured as a duplex tandem (DT) pair. This matched set is designed for applications requiring exceptional stiffness and the capacity to handle heavy axial loads in one direction. Manufactured to a P4A tolerance class, it delivers superior running accuracy. The combination of a phenolic cage and ceramic balls enables outstanding high-speed performance, making it ideal for demanding, high-precision machinery.

Model Code Breakdown

  • 71932: Basic bearing series, indicating a high-precision, light-weight angular contact design.
  • AC: Angular Contact design with a 25° contact angle.
  • D: Signifies the bearing is part of a Duplex (pre-loaded pair) set.
  • HC: Indicates the use of Hybrid Ceramic balls (ceramic balls with steel rings).
  • P4A: Denotes a super-precision tolerance class for extreme running accuracy.
  • DT: Specifies the Duplex Tandem mounting arrangement, where two bearings are paired to increase axial load capacity in one direction.

71932 ACD/HCP4ADT Bearing Structural Features & Performance Benefits

Enhanced Rigidity and Load Capacity: The duplex tandem arrangement creates a highly rigid assembly capable of supporting very high axial loads. The 25° contact angle is optimized for this type of loading.

Superior High-Speed Performance: The hybrid ceramic construction (steel rings with ceramic balls) significantly reduces centrifugal forces, lowers operating temperature, and allows for a higher limiting speed. The lightweight phenolic cage further enhances high-speed stability and performance.

Precision and Longevity: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration. The preload is applied at the factory, guaranteeing immediate precision and stiffness upon installation.

71932 ACD/HCP4ADT Bearing Typical Application Areas

This high-performance duplex tandem bearing set is engineered for the most demanding applications, including:

  • Machine Tool Spindles: High-speed milling, grinding, and turning centers.
  • Precision Spindles: PCB drilling and routing machines.
  • High-Frequency Motors and Turbocharger Shafts.
  • Other equipment requiring uncompromising stiffness, speed, and axial load capacity.
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