7024 ACD/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7024 ACD/HCP4ADBB Bearing Product Overview & Core Advantages
The 7024 ACD/HCP4ADBB is a precision duplex pair of Angular Contact Ball Bearings configured in a Back-to-Back (DB) arrangement. This high-performance assembly is engineered to simultaneously handle significant combined radial and axial loads from both directions. Manufactured to the exacting P4A tolerance class, it delivers exceptional running accuracy, high rigidity, and superior operational stability, making it an ideal solution for demanding, high-precision applications requiring reliable performance under complex loading conditions.
7024 ACD/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7024 | Basic Bearing Series & Size | Defines the core dimensions: 120mm bore, 180mm OD, 56mm width. |
| AC | Angular Contact | Optimized geometry for carrying combined loads. |
| D | Duplex / Matched Pair | Two bearings are supplied as a precision-matched set. |
| HC | Hybrid Ceramic | Features Ceramic balls for enhanced speed capability and reduced wear. |
| P4A | Tolerance Class | Denotes high precision with very tight dimensional and running accuracy tolerances. |
| DB | Back-to-Back Arrangement | Provides a wide effective spread for high moment stiffness. |
| B | Light Preload | Bearings are preloaded to eliminate internal clearance, ensuring maximum rigidity and precise shaft positioning. |
7024 ACD/HCP4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Moment Load Capacity: The Back-to-Back (DB) duplex arrangement creates a wide, rigid support system that effectively resists overturning moments, making it exceptionally stable under complex loads.
Superior High-Speed Performance: The combination of hybrid ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage significantly lowers rotating mass and friction, enabling a high limiting speed of 10,000 rpm.
Enhanced Load Rating & Longevity: With a 25° contact angle and precision manufacturing, this bearing pair offers high dynamic and static load ratings (40,050 lbf / 52,200 lbf). The ceramic balls are electrically insulating and resist wear, contributing to a longer service life.
Precision & Stability: The P4A tolerance class and factory-applied light preload guarantee minimal runout and consistent, precise performance, critical for applications where positional accuracy is paramount.
7024 ACD/HCP4ADBB Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is ideally suited for advanced machinery requiring exceptional accuracy and speed. Key applications include:
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace & Defense Actuation Systems
- Advanced Robotics and Automation Arms
