71915 CD/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71915 CD/HCP4AQBCA Bearing Product Overview & Core Advantages
The 71915 CD/HCP4AQBCA is a precision angular contact ball bearing configured in a Quadruplex Back-to-Back (QBC) matched set. This high-performance arrangement is engineered to deliver exceptional system rigidity and handle complex combined loads, including significant radial and bidirectional axial forces. Manufactured to a P4A tolerance class, it guarantees superior running accuracy essential for the most demanding high-speed and high-precision applications. The use of ceramic balls and a phenolic cage contributes to its outstanding high-speed capabilities and reduced operational weight.
Model Code Breakdown
- 71915: Basic series designation for a high-precision angular contact ball bearing.
- CD: Indicates a 15° contact angle, optimized for high-speed operation.
- HC: Denotes the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4A: Specifies the tolerance class, indicating very high dimensional and running accuracy.
- QBC: Defines the matched arrangement as a Quadruplex Back-to-Back set of four bearings.
- A: Specifies an Extra Light preload for optimal stiffness and minimal friction.
71915 CD/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The Quadruplex Back-to-Back (QBC) configuration creates an extremely rigid bearing system, capable of withstanding heavy combined loads and moments. This makes it ideal for applications where shaft deflection must be minimized.
Superior High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 22,000 rpm. The hybrid construction also reduces heat generation.
Precision and Longevity: Manufactured to P4A tolerance standards, this bearing ensures smooth, quiet, and vibration-free operation. The open design is pre-lubricated, suitable for integrated lubrication systems in precision machinery.
71915 CD/HCP4AQBCA Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is specifically designed for advanced industrial equipment, including:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotics and Automation Arms
- Aerospace Actuation Systems
- Advanced Medical and Laboratory Equipment
