S7016 ACD/P4ADT
Sealed Super Precision Angular Contact Ball Bearings
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S7016 ACD/P4ADT Bearing Product Overview & Core Advantages
The S7016 ACD/P4ADT is a precision duplex tandem angular contact ball bearing designed for applications requiring exceptional rigidity and rotational accuracy. This matched bearing set features a 25° contact angle and is manufactured to P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its primary advantage lies in its ability to handle combined loads (radial and axial) efficiently in a single direction, making it ideal for high-speed, high-precision spindles. The preloaded duplex tandem (DT) arrangement provides maximum axial stiffness and positional accuracy, eliminating internal clearance for immediate, precise response.
S7016 ACD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex arrangement (two bearings supplied as a set). |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DT | Tandem mounting. The two bearings are arranged to face the same direction, increasing axial load capacity in one direction and system rigidity. |
S7016 ACD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem design combines two bearings to create an exceptionally rigid unit capable of supporting high axial loads in one direction and significant radial loads. The phenolic cage contributes to stable operation under high loads.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a 25° contact angle, this bearing ensures minimal runout and vibration. The optimized internal geometry and phenolic cage enable a high limiting speed of 28,000 rpm, making it suitable for demanding high-speed applications.
- Optimized Material & Preload: Constructed from chrome steel for both rings and balls, the bearing offers high durability and fatigue resistance. The set is supplied with a preload, which eliminates internal clearance, enhances system stiffness, and improves rotational accuracy from startup.
- Sealed & Lubricated for Long Life: The sealed design protects the bearing from contaminants. Pre-greased for immediate operation, it provides reliable performance across a wide temperature range from -30°C to 110°C.
S7016 ACD/P4ADT Bearing Typical Application Areas
The S7016 ACD/P4ADT is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motor spindles.
- Industrial Pumps & Compressors: High-speed centrifugal pumps and compressor shafts.
- Robotics: High-accuracy robotic arm joints and precision gearboxes.
