7003 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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7003 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7003 CD/P4ADBA is a precision duplex pair of Angular Contact Ball Bearings in a Back-to-Back (DB) arrangement, preloaded to Extra Light (Class A) specifications. Engineered for the highest levels of accuracy and performance, this matched set is designed to simultaneously handle combined radial and axial loads. Its P4A tolerance class ensures exceptional running accuracy, making it ideal for applications demanding high rigidity, precise shaft positioning, and smooth operation at elevated speeds.
Model Code Breakdown
- 7003: Basic series designation, indicating a 17mm bore, 35mm OD metric bearing.
- C: Denotes a 15° contact angle, optimized for high-speed performance and moderate axial load capacity.
- D: Indicates the bearing is part of a Duplex pair (two bearings mounted together).
- P4A: Specifies the tolerance class, representing very high precision for both dimensional and running accuracy.
- DB: Defines the Back-to-Back mounting arrangement, which provides high moment rigidity and excellent stability.
- A: Specifies the Extra Light preload level, minimizing friction and heat generation for optimal high-speed operation.
7003 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity and Stability: The Back-to-Back (DB) duplex arrangement creates a wide, rigid support system that effectively resists moment loads and maintains precise shaft alignment under combined loads.
Superior Precision: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for the accuracy of high-performance machinery.
Optimized High-Speed Performance: The 15° contact angle and light preload are engineered to reduce friction and heat buildup, enabling a high limiting speed. The phenolic resin cage is lightweight and robust, contributing to smooth operation at high RPMs.
Pre-Lubricated for Immediate Use: The bearing comes lubricated, ready for installation and initial operation within its specified temperature range.
7003 CD/P4ADBA Bearing Typical Application Areas
This high-precision duplex bearing set is ideally suited for applications requiring exceptional accuracy and rigidity, such as:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Instrumentation
- Aerospace Actuators and Control Systems
