7216 ACD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7216 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7216 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair configuration is engineered to simultaneously handle combined loads, including significant radial loads and bidirectional axial loads. Manufactured to P4A tolerance class, it delivers superior running accuracy and is pre-lubricated for immediate use. Its compact design, featuring a phenolic cage and extra light preload (Class A), makes it an ideal solution for high-speed, high-precision machinery where reliability and performance are critical.
7216 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing designation: 80 mm bore, 140 mm OD, 52 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (Two bearings supplied as a matched set). |
| P4A | High-Precision Tolerance Class, specifying extremely tight dimensional and running accuracy. |
| DB | Back-to-Back mounting arrangement for high moment rigidity. |
| A | Specifies Extra Light Preload (Class A) for optimal performance at high speeds. |
7216 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity and Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing the bearing's resistance to overturning moments and ensuring exceptional system stability and rigidity.
Superior Load Capacity: With a 25° contact angle and a dynamic load rating of 29,925 lbf, this bearing is engineered to handle demanding combined radial and axial loads from both directions simultaneously, making it suitable for complex loading conditions.
Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 28,000 rpm. The extra light preload minimizes heat generation at high rotational speeds.
Precision and Accuracy: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing guarantees precise shaft positioning, low vibration, and smooth operation in the most demanding precision applications.
7216 ACD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring utmost precision and rigidity.
- Precision Gearboxes: Applications demanding accurate shaft alignment and high load capacity.
- High-Frequency Motors and Spindles: Where minimal runout and high rotational speeds are critical.
- Industrial Pumps and Compressors: For handling combined loads in demanding fluid-handling equipment.
- Robotics and Automation: Precision joints and axes requiring high stiffness and accuracy.
