S7020 CD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7020 CD/P4ADBA Bearing Product Overview & Core Advantages
The S7020 CD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair configuration provides superior stability and is optimized to handle combined loads, including significant radial loads and bidirectional axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed, high-precision machinery requiring maximum reliability and long service life.
S7020 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 | Basic bearing designation (100mm bore, 150mm OD). |
| C | 15° contact angle. |
| D | Duplex (two bearings in a set). |
| P4A | High precision tolerance class (superior to ABEC 7). |
| DB | Back-to-Back mounting arrangement. |
| A | Extra light preload for optimal rigidity and minimal friction. |
S7020 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back design creates a wide, rigid support system that effectively resists moment loads. This configuration provides excellent stiffness and enables the bearing set to handle substantial combined radial and axial loads from both directions.
Precision & High-Speed Performance: The phenolic resin cage offers low weight and excellent sliding properties, contributing to smooth operation at the high limiting speed of 10,000 rpm. Combined with the P4A precision grade and 15° contact angle, this ensures minimal vibration and heat generation during high-speed rotation.
Superior Material & Construction: Manufactured from high-grade chrome steel for both rings and balls, the bearing provides high fatigue life and durability. The matched set is supplied with preload applied and is ready for installation, ensuring consistent performance and simplifying the assembly process.
S7020 CD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Gearboxes: Industrial transmissions where low noise and high positional accuracy are critical.
- High-Frequency Motors & Spindles: Applications demanding minimal runout at very high rotational speeds.
- Medical & Laboratory Equipment: Centrifuges and imaging devices that require reliable, vibration-free operation.
- Aerospace & Defense Systems: Guidance systems and actuators where performance and reliability are paramount.
