7207 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7207 ACD/P4A Bearing Product Overview & Core Advantages
The 7207 ACD/P4A is a single-row angular contact ball bearing designed for high-precision and high-speed applications. Engineered to a P4 (ABEC-7) tolerance class, it offers exceptional running accuracy and dimensional stability. Its key advantage lies in its ability to accommodate combined loads—significant radial loads and substantial axial loads in one direction—making it ideal for applications demanding high rigidity and precise rotational performance. The phenolic resin cage and optimized internal geometry contribute to its superior high-speed capability.
7207 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7207: Basic series designation; 07 indicates a 35mm bore, 2 indicates a light series.
- AC: Angular Contact design with a 25° contact angle.
- D: Indicates a high-capacity internal design, featuring larger and more balls.
- P4A: Denotes a P4 (ABEC-7) tolerance class. The "A" suffix often indicates specific internal fit or preload for optimized performance.
7207 ACD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The optimized 25° contact angle and high-capacity internal design (D) enable the bearing to support high radial loads and substantial one-direction axial loads simultaneously, providing excellent operational stability.
Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation at high rotational speeds, up to a limiting speed of 30,000 rpm. This material offers excellent strength and lubrication compatibility.
Precision Engineering: Manufactured to P4 (ABEC-7) precision class with tight dimensional tolerances, this bearing guarantees minimal runout and vibration, which is critical for precision spindles and other high-accuracy machinery.
Optimized for Preload: The bearing is supplied preloaded (P4A), ensuring precise axial positioning, increased system stiffness, and reduced noise and vibration from the moment of installation.
7207 ACD/P4A Bearing Typical Application Areas
The 7207 ACD/P4A is ideally suited for demanding applications where high speed, high precision, and rigidity are paramount. Typical uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Aerospace and Defense Systems
