7024 ACD/PA9ATT
7000 Series Super Precision Angular Contact Ball Bearings
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7024 ACD/PA9ATT Bearing Product Overview & Core Advantages
The 7024 ACD/PA9ATT is a precision angular contact ball bearing designed for high-precision, high-rigidity applications. This bearing is supplied as a matched triplex tandem (3-DT) set, enabling it to handle significant axial loads in one direction while maintaining exceptional rotational accuracy. Its PA9A tolerance class and preload availability make it ideal for demanding scenarios requiring minimal runout and high system stiffness, such as precision spindles.
7024 ACD/PA9ATT Bearing Model Code Explained, Specifications & Naming Convention
- 7024: Basic bearing series, indicating a 120mm bore, 180mm OD, and 84mm width.
- A: Denotes a 25° contact angle, optimized for high axial load capacity.
- CD: Signifies a triplex matched set in a tandem (3-DT) arrangement.
- PA9A: Indicates an ultra-precision tolerance class for bore, outer diameter, and width.
- TT: Specifies the use of a phenolic (textolite) cage, suitable for high-speed operation.
7024 ACD/PA9ATT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex tandem arrangement of three bearings creates an exceptionally rigid bearing system, capable of supporting very high axial loads in one direction. The 25° contact angle is specifically engineered to maximize this axial load capacity.
Precision & Speed Performance: Manufactured to PA9A tolerance class with tight dimensional controls, this bearing ensures minimal vibration and high running accuracy. The lightweight phenolic cage (TT) contributes to lower centrifugal forces, supporting the high limiting speed of 10,000 rpm.
Preload & Stability: The bearing set is supplied preloaded, eliminating internal clearance to provide immediate high rigidity and precise shaft positioning, which is critical for applications with minimal deflection requirements.
7024 ACD/PA9ATT Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, rigidity, and high axial load capacity are paramount. Typical applications include:
- Machine Tool Spindles (e.g., high-speed milling, grinding spindles)
- Precision Screw Drives and Ball Screw Supports
- High-Speed Compressors and Pumps
- Aerospace Actuation Systems
