7000 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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7000 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7000 CE/HCP4ADBA represents a premium class of duplex angular contact ball bearings designed for applications demanding exceptional precision and performance. This metric series bearing is configured in a back-to-back (DB) arrangement as a pre-matched set, delivering superior high rigidity and stability. Its defining characteristics include the ability to handle combined loads (simultaneous radial and axial loads), a P4A super-precision tolerance class, and the use of ceramic balls for reduced friction and enhanced high-speed capability. This configuration is engineered for high-reliability scenarios where maximum rotational accuracy and operational longevity are critical.
7000 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7000 CE/HCP4ADBA provides a detailed technical specification through its suffixes:
- 7000: Basic series designation for a metric angular contact ball bearing.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial loads.
- E: Indicates the bearing is pre-lubricated.
- HC: Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Specifies the tolerance class, indicating super-precision levels for running accuracy and dimensional stability.
- DB: Designates the Duplex Back-to-Back mounting arrangement of the two bearings in the set.
- A: Identifies the preload level as Extra Light (Class A).
7000 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists overturning moments, making it ideal for precision spindles. This configuration significantly enhances system stiffness.
Superior High-Speed Performance: The combination of a phenolic resin cage, a 15° contact angle, and hybrid ceramic balls (silicon nitride) minimizes centrifugal forces, reduces friction, and lowers operating temperatures. This allows the bearing to achieve a high limiting speed of 185,000 rpm.
Extended Service Life & Reliability: Ceramic balls are harder, lighter, and more resistant to wear and corrosion than steel balls. They also provide electrical insulation. The P4A precision tolerance ensures smooth, quiet operation with minimal vibration, directly contributing to longer service life in demanding applications.
Preload & Precision: The extra light preload (Class A) minimizes axial and radial play, ensuring high running accuracy from startup without generating excessive heat, which is crucial for precision machining and instrumentation.
7000 CE/HCP4ADBA Bearing Typical Application Areas
This high-precision duplex bearing set is specifically engineered for advanced applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- High-Frequency CNC Spindles for milling, grinding, and drilling
- Precision Machine Tool Main Spindles
- High-speed Robotic Drives and Servo Motors
- Aerospace & Defense instrumentation and control systems
- Medical Device manufacturing equipment
- Advanced Semiconductor Manufacturing machinery
