7016 ACD/P4AQBTC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7016 ACD/P4AQBTC Bearing Product Overview & Core Advantages
The 7016 ACD/P4AQBTC is a precision angular contact ball bearing specifically designed for demanding applications requiring exceptional rigidity and load capacity. Its defining feature is its Quadruplex Tandem Back-to-Back (QBT) matched arrangement, where four bearings are pre-set as a single, highly integrated unit. This configuration provides superior stiffness and is optimized to handle significant combined loads (radial and axial) in a compact envelope. Manufactured to the exacting P4A tolerance class and featuring a Moderate (Class C) preload, this bearing is engineered for high-precision, high-reliability machinery.
7016 ACD/P4AQBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7016 | Standard bearing series and size designation (80mm bore, 125mm OD). | Defines the core bearing dimensions. |
| AC | Angular Contact design with a 25° contact angle. | Optimized for handling combined radial and axial loads simultaneously. |
| D | Moderate preload (Class C). | Enhances system rigidity and reduces deflection under load for improved precision. |
| /P4A | High precision tolerance class. | Ensures extremely tight dimensional and running accuracy for high-performance applications. |
| QB | Quadruplex (4-bearing) Back-to-Back arrangement. | Provides maximum rigidity and moment load capacity. |
| T | Phenolic (textile laminate) cage. | Ideal for high-speed operation, offering low weight and excellent sliding properties. |
| C | The set is pre-lubricated. | Ensures immediate and reliable operation upon installation. |
7016 ACD/P4AQBTC Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The core of the 7016 ACD/P4AQBTC's performance is its Quadruplex Tandem Back-to-Back (QBT) arrangement. This configuration creates an exceptionally stiff bearing system capable of withstanding heavy combined loads and high moment loads, making it far superior to single bearings or simpler duplex pairs.
Optimized for High-Speed Performance: The use of a lightweight phenolic cage is critical for maintaining stability and reducing centrifugal forces at the limiting speed of 28,000 rpm. The 25° contact angle provides an excellent balance between radial and axial load capacity, suitable for a wide range of high-speed applications.
Precision Engineering: Conforming to the P4A tolerance class, this bearing guarantees minimal runout and precise rotational accuracy. The moderate preload eliminates internal clearance, ensuring precise shaft positioning and enhanced system dynamic response.
Robust Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high fatigue life and durability. The open design allows for efficient lubrication management in complex systems.
7016 ACD/P4AQBTC Bearing Typical Application Areas
The 7016 ACD/P4AQBTC is engineered for the most demanding sectors of industrial machinery where precision, speed, and rigidity are paramount. Key applications include:
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and turning centers requiring extreme accuracy and stiffness.
- Precision Robotic Drives: In high-payload robotic arms and joints where moment load capacity is critical.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other high-performance actuation systems.
- Advanced Industrial Pumps and Compressors: For applications demanding high rotational speeds and reliable operation under combined loads.
