7207 CDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7207 CDGC/P4A Bearing Product Overview & Core Advantages
The 7207 CDGC/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and moderate preload. Operating under P4A tolerance class, it delivers exceptional dimensional accuracy and running precision. Its key advantage lies in its ability to support combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery requiring superior rotational accuracy and rigidity.
7207 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7207: Basic designation indicating a medium series bearing with a 35mm bore and 72mm outside diameter.
- CD: Represents a 15° contact angle and signifies that the bearing is part of a Universal Matchable (SU) set. This allows for precise preload control when mounted in pairs.
- GC: Indicates a Moderate Preload / Class C. This pre-set internal clearance provides high rigidity and optimal performance for the intended application.
- P4A: Denotes an extremely high precision tolerance class, exceeding ABEC 7 standards, which ensures minimal runout and vibration for superior performance.
7207 CDGC/P4A Bearing Structural Features & Performance Benefits
The performance of the 7207 CDGC/P4A is derived from its meticulous construction. The phenolic resin cage offers excellent dimensional stability and low friction, contributing to the high limiting speed of 41,000 rpm. The 15° contact angle is optimized to handle significant axial loads in one direction while accommodating radial loads. Being universally matchable, these bearings can be paired in various configurations (back-to-back, face-to-face, or tandem) to achieve specific stiffness and load-carrying requirements. The P4A precision ensures minimal vibration and heat generation, which is critical for the longevity and accuracy of the entire system.
7207 CDGC/P4A Bearing Typical Application Areas
This high-precision angular contact bearing is predominantly used in:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Where accurate shaft positioning and high rigidity are paramount.
- High-Frequency Motors and Spindle Drives.
- Medical Equipment and Laboratory Apparatus requiring quiet and precise operation.