7214 CD/HCP4ADBA
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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7214 CD/HCP4ADBA Bearing Product Overview & Core Advantages
The 7214 CD/HCP4ADBA is a duplex back-to-back (DB) angular contact ball bearing engineered for ultimate precision and performance in demanding applications. This P4A super-precision bearing features a ceramic ball and phenolic cage construction, delivering exceptional high-speed capability and minimal thermal expansion. Its extra light preload (Class A) and duplex DB arrangement provide superior running accuracy and system rigidity, making it ideal for machine tool spindles and other high-precision rotary systems requiring exceptional stability under combined radial and axial loads.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series, 70mm bore, 125mm OD, 48mm width |
| C | 15° contact angle |
| D | Duplex Back-to-Back (DB) arrangement |
| HC | Hybrid Ceramic (Silicon Nitride) balls |
| P4A | Super precision tolerance class (ABEC 7/ISO P4) |
| DB | Duplex Back-to-Back mounting |
| A | Extra light preload classification |
7214 CD/HCP4ADBA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (28,000 rpm) and extended service life.
Phenolic Cage Construction: The phenolic resin cage offers excellent dimensional stability at high speeds, reduced weight for lower centrifugal forces, and inherent lubricity for smooth operation.
Duplex DB Arrangement with Preload: The back-to-back mounting provides high moment stiffness and excellent resistance to overturning moments. The factory-set extra light preload ensures precise shaft positioning, minimizes deflection, and maintains optimal running accuracy.
Super-Precision Tolerances: Manufactured to P4A tolerance class, this bearing guarantees exceptional dimensional accuracy and rotational precision for applications demanding minimal runout and vibration.
7214 CD/HCP4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- High-Speed Motors: Spindle motors, high-frequency motors, and precision servo systems
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Medical Equipment: Dental handpieces, laboratory centrifuges, and imaging system rotors
- Precision Instrumentation: Measuring devices, optical scanners, and semiconductor manufacturing equipment
