7014 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7014 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7014 ACDGA/HCP4A is a single-row angular contact ball bearing engineered for high-precision and high-speed applications. Its defining feature is the 25° contact angle and P4A super-precision tolerance class, enabling exceptional rotational accuracy and system rigidity. The combination of a phenolic resin cage and ceramic balls significantly reduces centrifugal forces, allowing for superior limiting speeds and reliable operation under demanding conditions. This bearing is designed to handle significant axial loads in one direction and radial loads simultaneously, making it an ideal solution for machine tool spindles and other precision equipment where uncompromising performance is critical.
7014 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7014 | Basic Bearing Series & Size | 70 mm bore, 110 mm OD, 20 mm width. |
| AC | Angular Contact Design | Optimized for combined radial and axial loads. |
| DGA | Universal Matchable (SU) & Preload | Bearing can be mounted in sets (tandem, back-to-back, face-to-face) to achieve specific preload and rigidity. "A" denotes Extra Light preload. |
| HC | Hybrid Ceramic | Features ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4A | Tolerance Class | Exceeds ABEC-7/ISO P4 precision standards, ensuring minimal runout and vibration for ultra-precise applications. |
7014 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & High-Rigidity Performance: The phenolic resin cage offers excellent strength-to-weight ratio and operates smoothly at high speeds. Combined with lightweight ceramic balls, this design dramatically reduces inertial forces, enabling a high limiting speed of 29,000 rpm. The 25° contact angle provides an optimal balance between axial and radial load capacity, ensuring high system rigidity.
Superior Load Capacity: Engineered to accommodate high combined loads, this bearing excels in applications with significant axial thrust in one direction alongside radial forces. Its high dynamic and static load ratings ensure long service life under demanding operating conditions.
Precision & Thermal Stability: The P4A tolerance class guarantees tight dimensional control for superior running accuracy. The phenolic cage and ceramic balls also contribute to stable performance across the specified temperature range (-30°C to 110°C), resisting thermal expansion and maintaining preload.
7014 ACDGA/HCP4A Bearing Typical Application Areas
The 7014 ACDGA/HCP4A is specified for high-performance machinery requiring maximum precision and speed. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and spindle drives.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors & Spindles: PCB drilling spindles and dental handpieces.
