7216 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7216 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 7216 CDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (simultaneous radial and axial loads), this single bearing features a 15° contact angle for optimal thrust capacity. Its P4A tolerance class ensures ultra-precise dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery. The combination of a phenolic cage and ceramic balls contributes to its outstanding high-speed capabilities and operational stability.
Model Code Deep Explanation
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing series; 80 mm bore, 140 mm OD, 26 mm width |
| CD | 15° contact angle design |
| GA | Matched set bearing (2 bearings in set) |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4A | Ultra-precision tolerance class (superior to ABEC 7) |
7216 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (28,000 rpm) and extended service life.
Precision Phenolic Cage: The lightweight phenolic resin cage provides excellent dimensional stability at high speeds, contributing to smooth operation and reduced vibration.
Universal Matching (SU): This bearing is universally matchable, allowing for flexible mounting arrangements (DB, DF, DT) without pre-load loss, simplifying installation and maintenance.
Extra Light Preload (Class A): The preload classification ensures minimal starting and running torque while maintaining shaft rigidity, ideal for high-precision applications requiring minimal deflection.
Pre-lubricated Design: Factory-applied lubrication ensures immediate operational readiness and optimal performance across the specified temperature range (-30°C to 110°C).
7216 CDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles
- Precision Medical Equipment: Dental handpieces, surgical tools
- Aerospace Systems: Guidance systems, auxiliary power units
- High-Speed Motors: CNC spindle motors, high-frequency generators
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
