7019 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7019 CD/HCP4A Bearing Product Overview & Core Advantages
The 7019 CD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single-row bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its key advantages stem from a P4 (ABEC-7) tolerance class, a ceramic ball material, and a phenolic cage, enabling superior high-speed capabilities, reduced weight, and excellent operational stability. The bearing is supplied preloaded and pre-lubricated for immediate installation and optimal performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing series and size designation (95mm bore, 145mm OD, 24mm width). |
| CD | Indicates a high contact angle (15°) and optimized internal geometry for high stiffness and thrust capacity. |
| HC | Signifies the use of Hybrid Ceramic balls (silicon nitride), which reduce friction, heat generation, and allow for higher speeds. |
| P4 | Denotes the precision tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy. |
| A | Specifies that the bearing is supplied with a preload for enhanced rigidity and precise rotational accuracy. |
7019 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications.
- High Rigidity & Load Capacity: The 15° contact angle and preload provide superior axial and radial stiffness, making it ideal for applications requiring minimal deflection under combined loads.
- Optimized High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls work in concert to achieve a high limiting speed of 17,000 rpm, reducing inertial forces and enabling smoother operation.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining accuracy in precision machinery.
7019 CD/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Robotics: Joint and arm actuators requiring high stiffness and rapid response.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Speed Motors and Drives: Electric motors, turbochargers, and compressor shafts.
