S7003 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S7003 CD/P4A Bearing Product Overview & Core Advantages
The S7003 CD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to the exacting P4 (ABEC-7) tolerance class, this bearing excels in high-speed operations with a limiting speed of 50,000 rpm. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and thrust loads in one direction. The phenolic cage, sealed design, and factory-applied lubrication ensure reliable, long-term performance in demanding environments, making it an ideal solution for high-precision spindles and machinery.
S7003 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7003 | Standard bearing series designation with a 17mm bore, 35mm OD, and 10mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high rigidity. |
| D | Indicates a high preload for maximum stiffness and minimal axial/radial deflection under load. |
| P4A | Denotes the P4 (ABEC-7) tolerance class, ensuring ultra-precise running accuracy and dimensional stability. |
S7003 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The high preload (D) and 15° contact angle (C) work in tandem to deliver exceptional system stiffness, critical for minimizing deflection in precision machining and high-load scenarios.
- Superior Load Capacity: Engineered to support combined radial and axial loads simultaneously, with a dynamic load rating of 1521 lbf and a static load rating of 731 lbf.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components and optimized internal geometry enable stable operation at up to 50,000 rpm.
- Sealed & Lubricated for Life: The sealed design and factory-applied lubrication protect against contamination and provide long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7003 CD/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling spindles.
- Precision Instrumentation: High-speed measuring devices and optical scanners.
- High-Frequency Motors: Spindles for PCB drilling and small precision motors.
- Robotics: High-accuracy joints and actuators requiring minimal backlash.
