7214 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7214 CDGB/P4A Bearing Product Overview & Core Advantages
The 7214 CDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it ideal for high-speed spindles and other precision machinery. The bearing comes pre-lubricated and is part of a Universal Matchable (SU) set, allowing for precise preload configuration when mounted in pairs or groups.
7214 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7214: Basic designation indicating a medium series bearing with a 70 mm bore and 125 mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates the bearing is supplied with a Light preload (Class B).
- GB: Specifies a Universal Matchable (SU) bearing. "G" indicates special design features, and "B" signifies a specific universal matching grade for precise axial displacement and preload control when mounted with other SU bearings.
- P4A: The tolerance class, signifying very high precision for both bore and outside diameter dimensions and running accuracy.
7214 CDGB/P4A Bearing Structural Features & Performance Benefits
High Precision and Rigidity: Manufactured to P4A super-precision standards, this bearing ensures minimal runout and vibration, which is critical for applications like machine tool spindles. The 15° contact angle provides an optimal balance between radial load capacity and axial stiffness.
Superior Load Capacity: With a dynamic load rating of 15,502 lbf and a static load rating of 13,162 lbf, it reliably handles significant combined loads.
High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to low friction and enabling a high limiting speed of 28,000 rpm. This makes it an excellent choice for high-speed applications.
Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it can be precisely paired with other SU bearings to form a set of 2, 3, or 4 bearings. This allows for controlled preload and maximum system rigidity in the final application.
7214 CDGB/P4A Bearing Typical Application Areas
The 7214 CDGB/P4A is predominantly used in high-performance machinery where precision, speed, and rigidity are paramount. Key sectors include:
- Machine Tool Spindles: For milling, grinding, and turning centers.
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
