7216 CD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7216 CD/P4A Bearing Product Overview & Core Advantages
The 7216 CD/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads in one direction, this bearing is characterized by its P4 (ABEC-7) super-precision tolerance class and availability with preload. Its optimized internal geometry and phenolic cage make it an ideal solution for machine tool spindles and other high-speed, high-rigidity systems.
7216 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing designation: 70mm bore, 110mm OD, 18mm width |
| C | 15° contact angle, optimized for high-speed operation |
| D | Enhanced internal design for higher load capacity |
| P4A | P4 precision class (equivalent to ABEC-7) with specific tolerance and running accuracy requirements |
7216 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design with a 15° contact angle provides excellent rigidity and running accuracy under combined loads, essential for precision machining applications.
- Superior Load Capacity: Engineered with an optimized internal geometry (denoted by suffix D), this bearing offers enhanced dynamic and static load ratings (19,170 lbf / 16,875 lbf) for demanding operational conditions.
- High-Speed Performance: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, enabling a high limiting speed of 16,000 rpm.
- Preload Availability: The availability of preload allows for precise control over bearing clearance, resulting in increased system stiffness and improved rotational accuracy.
- Wide Temperature Range: Constructed from chrome steel and lubricated for operation from -30°C to 110°C, ensuring reliability across various industrial environments.
7216 CD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles (milling, grinding, and lathe applications)
- High-Speed Machining Centers
- Precision Gearboxes
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
