71913 CE/HCPA9ADBA
Hybrid Ceramic Super Precision Bearings
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71913 CE/HCPA9ADBA Bearing Product Overview & Core Advantages
The 71913 CE/HCPA9ADBA is a precision angular contact ball bearing designed for applications requiring exceptional accuracy and reliability. This duplex back-to-back (DB) matched set features a 15° contact angle and is preloaded to Extra Light (Class A) specifications, ensuring high system rigidity and minimal runout. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance, with a limiting speed of 31,000 rpm. This bearing is engineered to handle combined loads efficiently, making it ideal for demanding, high-precision rotational systems.
71913 CE/HCPA9ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| CE | 15° Contact Angle | Optimized for high-speed applications with moderate axial load capacity |
| HCPA9A | High Precision Tolerance (PA9A) | Exceptional dimensional and running accuracy for precision applications |
| DB | Duplex Back-to-Back Arrangement | Provides rigid bearing support capable of withstanding moment loads |
| A | Extra Light Preload | Minimal preload for high-speed operation with reduced friction and heat generation |
71913 CE/HCPA9ADBA Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and provides stable combined load support. This configuration significantly increases system stiffness compared to single bearings.
High-Speed Capability: The combination of ceramic balls (silicon nitride) and phenolic cage enables exceptional high-speed performance. Ceramic balls reduce centrifugal forces, while the phenolic cage offers excellent strength-to-weight ratio and operates smoothly at high rotational speeds up to 31,000 rpm.
Precision Engineering: Manufactured to PA9A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration, critical for precision applications requiring accurate rotational motion.
Thermal Stability: The open design with proper lubrication allows for efficient heat dissipation, maintaining stable performance across the operating temperature range of -30°C to 110°C.
71913 CE/HCPA9ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring extreme accuracy and high rotational speeds
- High-Speed Motors: Precision electric motors and spindle drives in industrial automation equipment
- Aerospace Systems: Guidance systems, flight control mechanisms, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and inspection equipment
