7214 ACD/HCP4AQBCB
Hybrid Ceramic Super Precision Bearings
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7214 ACD/HCP4AQBCB Bearing Product Overview & Core Advantages
The 7214 ACD/HCP4AQBCB is a high-precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched set of four bearings in a Back-to-Back (QBC) arrangement provides superior stability and can accommodate combined radial and axial loads. Manufactured to P4A tolerance class and featuring ceramic balls and a phenolic cage, it delivers outstanding performance in high-speed and high-rigidity scenarios.
7214 ACD/HCP4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series, indicating a 70mm bore, 125mm OD, and 24mm single width. |
| ACD | Angular Contact design with a 25° contact angle. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4A | Indicates a high-precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration. |
| QBC | Quadruplex Back-to-Back matched set. Four bearings are supplied as a pre-matched unit in a back-to-back configuration. |
| B | Specifies a Light preload (Class B) for optimal stiffness and rotational accuracy. |
7214 ACD/HCP4AQBCB Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system capable of withstanding heavy combined loads and moments. This configuration significantly enhances the machine's structural integrity.
High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and ensures stable operation at the high limiting speed of 28,000 rpm. This makes it an ideal high-speed bearing.
Precision and Accuracy: Manufactured to P4A tolerance class with a Light preload, this bearing set guarantees minimal axial and radial runout, which is critical for applications requiring extreme positioning accuracy.
Optimized for Performance: The open seal type allows for customized lubrication strategies, while the standard lubrication and wide temperature range (-30°C to 110°C) ensure reliable operation in various conditions.
7214 ACD/HCP4AQBCB Bearing Typical Application Areas
This high-performance precision bearing is engineered for the most demanding industrial sectors:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors and Spindles: Where maximum speed and rigidity are paramount.
