7216 CD/P4ADFA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7216 CD/P4ADFA Bearing Product Overview & Core Advantages
The 7216 CD/P4ADFA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched Face-to-Face (DF) arrangement provides superior stability when handling combined loads (radial and axial). Manufactured to P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-precision, high-reliability machinery. The pre-loaded Extra light (Class A) configuration guarantees precise shaft positioning and optimal performance right from installation.
7216 CD/P4ADFA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing series with 80mm bore, 140mm OD, 52mm width |
| C | 15° contact angle |
| D | Duplex bearing set |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DF | Face-to-Face mounting arrangement |
| A | Extra light preload |
7216 CD/P4ADFA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex face-to-face configuration creates a rigid support system that effectively handles combined radial and axial loads from both directions. With a 15° contact angle and 17 precision balls, it provides excellent load distribution and moment stiffness.
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal vibration and superior running accuracy. The phenolic cage offers excellent dimensional stability and reduced friction at high speeds.
High-Speed Capability: The optimized internal geometry and lightweight phenolic cage enable operation at limiting speeds up to 28,000 rpm, making it suitable for demanding high-speed applications.
Material Excellence: Constructed from chrome steel for both rings and balls, this bearing delivers exceptional durability and wear resistance across the operating temperature range of -30°C to 110°C.
7216 CD/P4ADFA Bearing Typical Application Areas
- Machine tool spindles for milling, grinding, and turning centers
- High-frequency motor spindles in precision manufacturing
- Precision gearboxes and transmission systems
- Industrial pumps and compressors requiring high accuracy
- Robotic arm joints and precision positioning systems
- Aerospace control systems and instrumentation
