7216 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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7216 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7216 CD/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As part of a universally matchable (SU) set, it excels at handling combined radial and axial loads simultaneously. Its construction with ceramic balls and a P4A tolerance class ensures exceptional rotational accuracy, low heat generation, and extended service life, making it ideal for high-reliability machinery.
7216 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing series and size designation (80mm bore, 140mm OD). |
| C | 15° contact angle. |
| D | Enhanced internal design for high-precision applications. |
| HC | Hybrid Ceramic: Features ceramic balls for superior high-speed performance. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DG | Universal Matchable (SU): Bearings can be universally paired in any combination. |
| A | Extra light preload for minimal friction and optimal high-speed operation. |
7216 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a limiting speed of 28,000 rpm. This construction also provides superior resistance to wear and electrical arcing.
High Rigidity & Load Capacity: The 15° contact angle and precision-ground raceways provide excellent support for combined loads. With a dynamic load rating of 31,500 lbf, it offers robust performance in demanding conditions.
Precision & Stability: Manufactured to P4A tolerance class with a phenolic cage, this bearing ensures minimal vibration and high running accuracy, which is critical for precision applications.
Universal Matchability (SU): The DG suffix indicates that bearings are universally matchable, allowing for flexible arrangement in pairs (DB, DF, DT) without selective mounting, simplifying installation and inventory.
7216 CD/HCP4ADGA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Aerospace & Defense Systems
- Medical & Dental Equipment
- Semiconductor Manufacturing Equipment
