7019 CD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7019 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7019 CD/P4ADBA is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. Engineered to the exacting P4A tolerance class, this bearing is designed for applications demanding exceptional rotational accuracy and high system rigidity. Its primary advantage lies in its ability to support combined loads—significant radial and axial loads in both directions—simultaneously. The matched duplex pair and extra light preload (Class A) ensure optimal performance, minimal runout, and enhanced stability in high-precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing series and size designation (95mm bore, 145mm OD). |
| C | 15° contact angle, optimized for carrying axial loads. |
| D | Duplex back-to-back (DB) arrangement. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
| DB | Specifies the back-to-back mounting of the matched set. |
| A | Indicates extra light preload applied to the matched set. |
7019 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a wide, rigid support system that effectively resists moment loads. This design enables the bearing to handle substantial combined radial and bidirectional axial loads with high stability.
Precision & High-Speed Performance: Manufactured to P4A tolerance standards, the bearing ensures minimal vibration and precise shaft positioning. The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 17,000 rpm, making it suitable for high-speed applications.
Superior Material & Construction: Components made from high-grade chrome steel provide excellent wear resistance and fatigue life. The set is supplied pre-lubricated and ready for installation, ensuring immediate operational readiness.
7019 CD/P4ADBA Bearing Typical Application Areas
The 7019 CD/P4ADBA is ideally suited for high-precision, high-rigidity rotating systems, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arm Rotary Joints
