S7003 CD/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7003 CD/P4ADBB Bearing Product Overview & Core Advantages
The S7003 CD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads from both directions. With its P4A tolerance class and light preload (Class B), it is engineered for high-speed operation and demanding applications where minimal runout and high system rigidity are critical.
S7003 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7003 | Bearing series and size designation | 17 mm bore, 35 mm OD, 20 mm width |
| C | 15° contact angle | Optimized for combined loads and high-speed operation |
| D | Duplex arrangement | Two bearings supplied as a matched set |
| P4A | High precision tolerance class | Superior dimensional and running accuracy |
| DB | Back-to-Back mounting | Provides high moment rigidity and stable preload |
| B | Light preload | Reduces deflection and improves high-speed performance |
S7003 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a wide effective spread between load centers, significantly increasing moment stiffness and enabling the bearing set to handle substantial combined radial and axial loads.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and excellent running accuracy. The 15° contact angle and light preload are optimized for high-speed applications up to 85,000 rpm.
Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with high-performance grease, it is protected from contamination and is maintenance-free within its specified temperature range of -30°C to 110°C.
Premium Materials: Constructed from chrome steel for both rings and balls, the bearing offers high durability and long service life under demanding operating conditions.
S7003 CD/P4ADBB Bearing Typical Application Areas
The S7003 CD/P4ADBB is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., CNC milling and grinding spindles)
- High-Frequency Motors and Spindle Drives
- Precision Gearboxes and Robotic Joints
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Actuation Systems and Instrumentation
