7212 CD/P4ADFB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7212 CD/P4ADFB Bearing Product Overview & Core Advantages
The 7212 CD/P4ADFB is a precision duplex angular contact ball bearing designed for exceptional performance in demanding applications. This metric system bearing features a Face-to-Face (DF) matched arrangement and a Light preload (Class B), delivering superior rotational accuracy and system rigidity. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads from both directions—simultaneously. Manufactured to P4A tolerance class, it ensures high running accuracy and is pre-lubricated for immediate use, making it an ideal choice for high-speed, high-precision spindles and machinery.
7212 CD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series; 60 mm bore, 110 mm OD, 44 mm width. |
| C | 15° contact angle, optimized for high axial load capacity. |
| D | Duplex bearing set (two bearings supplied as a matched pair). |
| P4A | High precision tolerance class, exceeding ABEC-7 standards for superior running accuracy. |
| DF | Face-to-Face arrangement. Axial load lines converge, providing high moment rigidity. |
| B | Light preload grade. Reduces axial/radial play for improved stiffness and positioning accuracy. |
7212 CD/P4ADFB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex DF arrangement creates a highly rigid bearing system capable of withstanding complex combined loads and moments. The 15° contact angle is engineered to support substantial axial loads in both directions.
Precision & High-Speed Performance: Manufactured to P4A precision standards with tight dimensional tolerances, this bearing minimizes vibration and run-out. The lightweight phenolic resin cage ensures stable operation and contributes to the high limiting speed of 32,500 rpm, making it an excellent high-speed bearing.
Material & Construction: Components are made from high-grade chrome steel, providing excellent wear resistance and durability. The set is supplied pre-lubricated, ensuring optimal performance from initial startup.
7212 CD/P4ADFB Bearing Typical Application Areas
The 7212 CD/P4ADFB is engineered for high-performance applications requiring precision, speed, and rigidity. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Industrial Pumps & Compressors: Where accurate shaft positioning under combined loads is critical.
- Robotics & Automation: High-accuracy rotary joints and arm assemblies.
