S7019 CD/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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S7019 CD/P4ADBB Bearing Product Overview & Core Advantages
The S7019 CD/P4ADBB is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. Engineered for the most demanding applications, this matched set delivers exceptional high rigidity and stability under combined loads, including radial and bidirectional axial forces. Manufactured to P4A tolerance class, it guarantees superior running accuracy, making it ideal for high-speed spindles and other precision machinery requiring uncompromising performance and reliability.
S7019 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7019 | Basic bearing series, indicating a 95 mm bore, 145 mm OD, and 48 mm width. |
| C | 15° contact angle. |
| D | The bearing is a duplex set (two bearings). |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | Back-to-Back arrangement. This configuration provides high moment rigidity. |
| Sealed | Integrated seals protect against contamination and retain lubricant. |
| Light Preload / Class B | The set is preloaded to eliminate internal clearance, enhancing stiffness and rotational accuracy. |
S7019 CD/P4ADBB Bearing Structural Features & Performance Benefits
Optimized for High Rigidity and Precision: The duplex back-to-back (DB) arrangement creates a wide, stable support system that significantly increases resistance to moment loads, delivering the high rigidity essential for precision machining and high-speed operation.
Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 29,925 lbf, this bearing is engineered to handle significant combined loads (radial and axial) simultaneously, ensuring long service life in demanding conditions.
High-Speed Capability: The phenolic cage and precision-ground chrome steel components are optimized for low friction and high stability, enabling a limiting speed of 15,000 rpm. The factory-applied grease lubrication is suitable for this high-speed range.
Sealed and Ready-to-Use: The integral seals provide robust protection against contaminants and effectively retain the lubricant, offering a long-lasting, maintenance-free solution that simplifies installation and enhances operational reliability.
S7019 CD/P4ADBB Bearing Typical Application Areas
The S7019 CD/P4ADBB is specifically designed for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Industrial Pumps and Compressors: For handling axial and radial loads in high-speed rotors.
- Robotics and Automation: High-accuracy rotary joints and arm actuators.
