7024 ACD/P4ATT
7000 Series Super Precision Angular Contact Ball Bearings
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7024 ACD/P4ATT Bearing Product Overview & Core Advantages
The 7024 ACD/P4ATT is a metric precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This bearing is supplied as a Triplex Tandem (3-DT) matched set, comprising three individual bearings pre-configured to share axial loads in one direction with maximum stiffness. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed spindles and other critical machinery where minimal runout and high system rigidity are paramount. The phenolic cage and optimized 25° contact angle contribute to superior high-speed performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7024 | Basic bearing designation indicating a 120 mm bore, 180 mm OD, and 84 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a preload is applied to the bearing set. |
| P4A | Ultra-precision tolerance class with enhanced dimensional and running accuracy requirements. |
| T | Phenolic (textile laminate) cage material. |
| T | Indicates the bearing is part of a matched set (Triplex Tandem). |
7024 ACD/P4ATT Bearing Structural Features & Performance Benefits
- Triplex Tandem Matched Set (3-DT): Three bearings are precision-matched and mounted in a tandem arrangement. This configuration is engineered to handle very high unidirectional axial loads and provides exceptional system rigidity, minimizing axial deflection under load.
- High Rigidity & Load Capacity: The combination of a 25° contact angle and the triple-bearing stack results in a very high dynamic and static load rating (53,550 lbf dynamic / 77,625 lbf static), enabling reliable operation under heavy combined loads.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the open design and factory-applied lubrication allow for efficient operation at high rotational speeds (limiting speed of 10,000 rpm).
- Precision Engineering: Manufactured to P4A tolerance class with tight bore, OD, and width tolerances. This ensures precise shaft positioning, low vibration, and smooth running essential for high-precision applications.
7024 ACD/P4ATT Bearing Typical Application Areas
The 7024 ACD/P4ATT is specifically designed for high-performance machinery where precision, speed, and rigidity are non-negotiable. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling, semiconductor manufacturing, and other high-accuracy processes.
- High-Frequency Machining Centers: Where rapid acceleration and deceleration require superior bearing stability.
- Industrial Pumps & Compressors: For high-speed rotor support in demanding fluid handling systems.
