7005 ACD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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7005 ACD/HCP4ADGB Bearing Product Overview & Core Advantages
The 7005 ACD/HCP4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it enables simplified mounting and optimal preload configuration. Its core advantages include superior high-speed capability enabled by a phenolic cage and ceramic balls, and the ability to accommodate combined loads with high rigidity due to its 25° contact angle. This bearing is pre-lubricated and built to P4A tolerance class, making it ideal for high-reliability, precision machinery.
7005 ACD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° Contact Angle, Universal Matchable (SU) Design | Optimized for combined radial and axial loads, allowing for flexible mounting arrangements in pairs. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Enables higher limiting speeds, reduced friction, and longer service life, especially in high-speed applications. |
| P4A | High Precision Tolerance Class | Provides extremely tight dimensional and running accuracy for applications requiring superior rotational precision. |
| DGB | Light Preload (Class B) | Suppresses axial and radial play, enhancing system rigidity and rotational accuracy without excessive friction. |
7005 ACD/HCP4ADGB Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and allows for a limiting speed of 75,000 rpm. This makes it a true high-speed bearing.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at high speeds and offers excellent dimensional stability.
- Universal Matchable (SU) Design: The 25° contact angle and universal matching capability allow two bearings to be mounted in any configuration (back-to-back, face-to-face, or tandem) to precisely support combined loads and moments.
- High Rigidity & Precision: The light preload (Class B) eliminates internal clearance, resulting in high system stiffness and precise shaft positioning, which is critical in precision machinery.
- Open Seal & Pre-lubrication: The open design minimizes friction for maximum speed, while the factory-applied lubrication ensures immediate readiness for operation within the specified temperature range.
7005 ACD/HCP4ADGB Bearing Typical Application Areas
This high-performance bearing is engineered for advanced applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling applications.
- Precision Robotics: In high-accuracy robotic arms and joints requiring minimal backlash.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and auxiliary power units.
- Medical Equipment: For dental handpieces, high-speed centrifuges, and imaging device rotors.
- Semiconductor Manufacturing: In wafer handling robots and precision stages.
