71916 ACD/HCP4ATBTC
Hybrid Ceramic Super Precision Bearings
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71916 ACD/HCP4ATBTC Bearing Product Overview & Core Advantages
The 71916 ACD/HCP4ATBTC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex matched set, arranged in a Back-to-Back (TBT) configuration, is engineered to handle combined loads (radial and axial) simultaneously with high stability. Featuring a P4A super-precision tolerance class and a ceramic ball construction, it delivers superior high-speed performance and extended service life, making it ideal for high-reliability, high-precision machinery.
Model Code Breakdown
- 71916: Basic series designation for a high-precision, angular contact bearing.
- AC: Angular Contact design with a 25° contact angle.
- D: Signifies a high rigid design and specific internal geometry.
- HC: Hybrid Ceramic construction, indicating ceramic balls with steel rings.
- P4A: Denotes a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards.
- TBT: Triplex Back-to-Back matched set arrangement for maximum moment rigidity.
- C: Indicates a specific moderate preload (Class C) for optimal stiffness and running accuracy.
71916 ACD/HCP4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity and Stability: The triplex back-to-back arrangement creates a highly rigid bearing system capable of withstanding complex combined loads and significant overturning moments, ensuring precise shaft positioning.
Superior High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic cage (lightweight and robust) enables a high limiting speed of 28,000 rpm, reducing friction and heat generation.
Enhanced Precision and Longevity: Manufactured to P4A tolerance standards, this bearing guarantees minimal runout and vibration. The hybrid ceramic design offers improved wear resistance and operates effectively within a wide temperature range from -30°C to 110°C.
Optimized Preload: The factory-set moderate preload (Class C) eliminates internal clearance, providing immediate high stiffness and accuracy without requiring end-user adjustment.
71916 ACD/HCP4ATBTC Bearing Typical Application Areas
This bearing is specified for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motor Spindles
- Aerospace & Defense Systems (Gyroscopes, navigation systems)
- Medical Equipment (High-speed dental handpieces, imaging scanners)
