7006 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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7006 CB/HCP4A Bearing Product Overview & Core Advantages
The 7006 CB/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single bearing features a 15° contact angle and is supplied with a preload, ensuring high system rigidity and precise rotational accuracy right from installation. Its construction with a phenolic cage and ceramic balls contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal solution for high-speed spindles and other precision machinery.
7006 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- 7006: Standard designation for a metric angular contact ball bearing with a 30mm bore, 55mm OD, and 13mm width.
- C: Denotes a 15° contact angle.
- B: Indicates that the bearing is supplied with a preload for enhanced rigidity.
- HCP4A: A manufacturer-specific suffix. P4 corresponds to the P4 (ABEC-7) tolerance class, guaranteeing ultra-precise dimensions and running accuracy. The "A" likely indicates a specific internal design or grouping.
7006 CB/HCP4A Bearing Structural Features & Performance Benefits
This bearing's design delivers distinct performance advantages crucial for advanced applications:
- High Rigidity & Precision: The applied preload eliminates internal clearance, resulting in significantly increased stiffness and minimal axial and radial runout, which is critical for machining accuracy.
- Superior High-Speed Capability: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls reduces centrifugal forces, enabling a high limiting speed of 67,000 rpm.
- Reduced Heat Generation & Long Life: Ceramic balls have a lower coefficient of thermal expansion than steel and are electrically insulating, reducing the risk of thermal seizure and electrical erosion. This leads to more stable operation and longer bearing service life.
- Optimized for Precision: Manufactured to a P4 (ABEC-7) tolerance class, this bearing ensures exceptional dimensional and running accuracy for the most demanding high-precision applications.
7006 CB/HCP4A Bearing Typical Application Areas
The 7006 CB/HCP4A is specifically designed for high-performance machinery where speed, precision, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling spindles and precision engraving machines.
- High-Speed Motors: Motors for turbines, compressors, and other high-RPM equipment.
- Advanced Robotics: Joints and actuators requiring high accuracy and responsiveness.
