7016 ACD/HCP4AQBCB
Hybrid Ceramic Super Precision Bearings
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7016 ACD/HCP4AQBCB Bearing Product Overview & Core Advantages
The 7016 ACD/HCP4AQBCB is a high-precision quadruplex matched angular contact ball bearing set designed for demanding applications requiring exceptional rigidity and accuracy. This metric system bearing features a back-to-back (QBC) arrangement of four bearings, enabling it to withstand significant combined loads, including heavy radial and bidirectional axial loads. Manufactured to a P4A tolerance class, it delivers superior running accuracy and rotational precision. The use of ceramic balls and a phenolic cage contributes to its high-speed capabilities, low heat generation, and extended service life, making it an ideal solution for ultra-precision and high-rigidity spindle systems.
7016 ACD/HCP4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7016 | Standard bearing series number, indicating a 80 mm bore, 125 mm OD, and 22 mm single bearing width. |
| ACD | Angular Contact Design with a 25° contact angle. |
| HC | Hybrid Ceramic, indicating the balls are made of ceramic material. |
| P4A | The tolerance class, denoting very high precision for both bore and outer diameter. |
| QBC | Quadruplex Back-to-Back arrangement. A pre-matched set of four bearings configured to provide maximum rigidity. |
7016 ACD/HCP4AQBCB Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and complex combined loads. This configuration provides superior stability for spindles and shafts.
High-Speed Performance: The combination of lightweight ceramic balls and a phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm. This makes it an excellent high-speed bearing for demanding applications.
Precision and Longevity: Manufactured to P4A precision tolerances, this bearing ensures minimal runout and vibration. The open seal type allows for optimized lubrication management, while the light preload (Class B) ensures consistent performance and extended service life under precise operating conditions.
Thermal Stability: The ceramic balls have a lower coefficient of thermal expansion than steel, which helps maintain bearing preload and dimensional stability across the operating temperature range of -30°C to 110°C.
7016 ACD/HCP4AQBCB Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is specifically engineered for the most demanding industrial applications, including:
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and turning centers where precision and rigidity are critical.
- Precision Grinding Spindles: Providing the necessary stability and accuracy for surface and cylindrical grinding operations.
- High-Frequency Motors and Spindles: Where low inertia and high rotational speeds are required.
- Aerospace and Defense Systems: Including gyroscopes, radar systems, and other precision instrumentation.
- Semiconductor Manufacturing Equipment: For wafer handling and processing stages that demand extreme precision and reliability.
