S7003 CE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
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S7003 CE/P4ADBB Bearing Product Overview & Core Advantages
The S7003 CE/P4ADBB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched pair is configured in a Back-to-Back (DB) arrangement, providing superior resistance to moment loads and offering high running accuracy. With its P4A tolerance class and light preload (Class B), it is engineered for high-speed operation and stable performance under combined radial and axial loads. This bearing set is an ideal solution for spindles and other high-precision machinery requiring maximum rigidity and minimal runout.
S7003 CE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- S7003: Basic bearing series, indicating a 17mm bore, 35mm OD, and 20mm width.
- CE: Internal design code, signifying a 15° contact angle and specific internal geometry optimized for high-speed performance.
- P4A: Tolerance class, denoting extremely tight dimensional and running accuracy standards (superior to ABEC 7).
- DBB: Duplex Back-to-Back arrangement. This indicates the set consists of two bearings matched and preloaded to operate as a single, highly rigid unit.
S7003 CE/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex DB arrangement creates a wide, rigid support system that effectively withstands combined loads (radial and axial) and moment loads, ensuring precise shaft positioning.
High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling the bearing to achieve its high limiting speed of 85,000 rpm. The 15° contact angle is ideal for high-speed applications where axial loads are present.
Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees minimal vibration and exceptional running accuracy, which is critical for applications like machine tool spindles.
Preloaded & Matched Set: Supplied as a preloaded, universally matched pair, these bearings are ready for installation without the need for additional adjustment, simplifying assembly and ensuring consistent, optimal performance.
S7003 CE/P4ADBB Bearing Typical Application Areas
The S7003 CE/P4ADBB is predominantly used in high-precision, high-speed machinery, including:
- Machine Tool Spindles (milling, grinding, and lathe spindles)
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Medical and Dental Equipment Spindles
