7216 CD/P4ADFC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7216 CD/P4ADFC Bearing Product Overview & Core Advantages
The 7216 CD/P4ADFC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and stiffness. This matched set bearing features a Face-to-Face (DF) duplex arrangement with a Moderate (Class C) preload, enabling it to handle combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, it delivers superior running accuracy and is ideal for high-speed, high-rigidity spindles and precision machinery where reliability is paramount.
7216 CD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing series; 80 mm bore, 140 mm OD, 52 mm width. |
| C | 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates a duplex pair of bearings supplied as a matched set. |
| P4A | High precision tolerance class, providing extremely tight dimensional and running accuracy for critical applications. |
| DF | Face-to-Face duplex arrangement. This configuration provides high moment stiffness and is less sensitive to misalignment. |
| C | Specifies the Moderate preload (Class C), which increases bearing rigidity and improves rotational accuracy. |
7216 CD/P4ADFC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex DF arrangement and Class C preload create an exceptionally rigid bearing system capable of withstanding significant combined loads and moments, ensuring stable performance under demanding conditions.
Precision & High-Speed Performance: Manufactured to P4A tolerance class and featuring a lightweight, durable phenolic resin cage, this bearing achieves smooth operation and a high limiting speed of 28,000 rpm. The 15° contact angle is ideal for applications where high rotational speeds are required.
Superior Material & Construction: Both rings and balls are made from high-grade chrome steel, ensuring high fatigue life and durability. The bearing comes pre-lubricated for immediate installation and reliable initial operation.
7216 CD/P4ADFC Bearing Typical Application Areas
The 7216 CD/P4ADFC is engineered for high-performance machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinders, and milling machines requiring high precision and rigidity.
- High-Speed Spindles: In applications such as routers and precision drills.
- Precision Gearboxes: Where accurate shaft positioning and high load capacity are critical.
- Industrial Pumps & Compressors: For handling axial and radial loads in demanding fluid-handling systems.
