7216 CD/P4ADGC
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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7216 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7216 CD/P4ADGC is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, it delivers superior running accuracy. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back (DB) or face-to-face (DF) arrangement with a pre-determined preload, simplifying installation and ensuring optimal performance. This bearing is capable of supporting combined loads and is optimized for high-speed operation, making it an ideal choice for high-performance spindles and precision machinery.
7216 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
- 7216: Basic series number (Light series, 80mm bore, 140mm OD).
- C: Denotes a 15° contact angle, optimized for high-speed applications.
- D: Indicates the bearing is supplied as part of a universally matchable pair (SU).
- P4A: Specifies a very high precision tolerance class exceeding ABEC 7 standards.
- DGC: Indicates a moderate preload (Class C) is applied to the bearing pair.
7216 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and universal matching enable the bearing pair to withstand significant combined radial and axial loads. The applied moderate preload (C) enhances system stiffness, critical for minimizing deflection under load.
- Superior High-Speed Performance: The 15° contact angle and lightweight phenolic resin cage reduce centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm. The open design facilitates efficient lubrication and heat dissipation.
- Exceptional Precision: Manufactured to P4A tolerance standards with tight dimensional controls on bore, outside diameter, and width, ensuring smooth, quiet, and accurate rotation essential for precision applications.
- Optimized Material Selection: Components made from chrome steel provide high hardness and durability, while the phenolic cage offers strength and smooth operation at high speeds.
7216 CD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: For milling, grinding, and turning centers.
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
