7003 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7003 CE/HCP4ADT Bearing Product Overview & Core Advantages
The 7003 CE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring ultra-high running accuracy and system rigidity. Its core advantage lies in its ability to handle high combined loads (radial and axial) in one direction with maximum stiffness, making it ideal for high-speed and high-precision spindles. The use of ceramic balls and a phenolic cage further enhances its high-speed capabilities and thermal stability.
7003 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 7003 | Basic bearing series and size designation (17mm bore, 35mm OD, 20mm width) | Defines the standard bearing dimensions. |
| C | 15° Contact angle | Optimized for high axial load capacity and high-speed operation. |
| E | Optimized internal geometry | Enhances performance and load distribution. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduces centrifugal forces, enabling higher limiting speeds, lower friction, and longer service life. |
| P4A | High precision tolerance class (superior to ABEC 7) | Guarantees minimal runout and vibration for ultra-precise applications. |
| DT | Duplex Tandem arrangement (2 bearings) | Provides maximum axial stiffness and load capacity in one direction. The set is supplied preloaded for immediate use. |
7003 CE/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement and preload create an exceptionally rigid bearing system capable of withstanding significant combined loads. This configuration is specifically designed to handle heavy thrust loads in one direction while supporting radial loads.
Superior High-Speed Performance: The combination of ceramic balls (lower density than steel) and a lightweight phenolic cage significantly reduces centrifugal forces and inertial mass. This allows the bearing to achieve its high limiting speed of 121,000 rpm with minimal heat generation and wear.
Precision & Accuracy: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures minimal runout and precise rotational accuracy, which is critical for applications requiring high positional repeatability.
Optimized for Performance: The open seal type and factory lubrication are selected to minimize friction and torque, further supporting its high-speed capabilities within the specified temperature range of -30°C to 110°C.
7003 CE/HCP4ADT Bearing Typical Application Areas
The 7003 CE/HCP4ADT is engineered for the most demanding high-speed and high-precision machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for CNC applications.
- Robotics: High-accuracy joints and arm assemblies.
