7014 CE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7014 CE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 7014 CE/HCPA9ADGA is a high-precision angular contact ball bearing engineered for demanding applications. Its core advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Manufactured to an exceptionally tight PA9A tolerance class and featuring a universal matchable (SU) design, this bearing is optimized for high-rigidity and high-speed performance. The use of a phenolic cage and ceramic balls contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal choice for ultra-precise and reliable spindle arrangements.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7014 | Basic Bearing Series & Size | 70mm bore, 110mm OD, 40mm width. |
| C | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| E | Optimized Internal Design | Enhanced internal geometry for improved performance and load rating. |
| HCPA9A | Tolerance Class & Preload | High-Precision PA9A tolerance with an Extra Light (A) preload for maximum running accuracy. |
| DGA | Universal Matchable (SU) | Bearing is universally matchable in any combination to create preloaded sets (DB, DF, DT) without selective mounting. |
7014 CE/HCPA9ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The PA9A tolerance class ensures extremely tight dimensional and running accuracy, which is critical for applications requiring minimal runout and vibration. The extra light preload eliminates internal clearance, providing superior system stiffness from startup.
- Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic (silicon nitride) balls significantly reduces centrifugal forces, allowing for a very high limiting speed of 22,000 rpm. This design minimizes heat generation and power loss.
- Enhanced Load Capacity: The 15° contact angle and optimized internal geometry provide an excellent balance, enabling the bearing to handle substantial combined radial and axial loads efficiently.
- Universal Matching Design: The SU designation (DGA suffix) means these bearings are manufactured to be universally matchable. This allows for simplified installation of preloaded pairs (back-to-back, face-to-face, or tandem) without the need for selective grinding or complex calculations, reducing assembly time and cost.
7014 CE/HCPA9ADGA Bearing Typical Application Areas
The 7014 CE/HCPA9ADGA is designed for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and other precision instruments.
