7224 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7224 CDGB/P4A Bearing Product Overview & Core Advantages
The 7224 CDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. Its key advantage lies in its ability to support combined loads—simultaneously handling significant radial loads and axial loads in one direction. The Universal Matchable (SU) design allows for flexible mounting in preloaded sets, enabling optimal rigidity and performance in high-speed spindle arrangements. With a light preload (Class B), it minimizes deflection under operational forces, making it ideal for high-precision, high-rigidity applications.
7224 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Basic bearing series and size designation (120mm bore, 215mm OD, 40mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates a light preload (Class B) for enhanced rigidity and reduced runout. |
| GB | Signifies the bearing is Universal Matchable (SU) and can be mounted in pre-arranged sets. |
| P4A | Denotes an ultra-precision tolerance class with extremely tight dimensional and running accuracy limits. |
7224 CDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering & High Rigidity: Manufactured to P4A standards, the bearing ensures minimal vibration and precise rotational characteristics. The 15° contact angle and light preload work in concert to provide high system rigidity, crucial for minimizing deflection under cutting forces or other operational loads.
Superior Load Capacity: With a dynamic load rating of 44,775 lbf and a static load rating of 43,425 lbf, this bearing is built to handle demanding combined radial and axial loads.
Optimized High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and stable operation at high speeds, with a limiting speed of 10,000 rpm. The open design allows for efficient lubrication management.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be supplied and installed in precisely matched sets (up to 4 bearings), ensuring uniform load distribution and simplified assembly for complex spindle designs.
7224 CDGB/P4A Bearing Typical Application Areas
The 7224 CDGB/P4A is engineered for the most demanding precision machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring extreme accuracy and surface finish quality.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM applications.
- Aerospace Test Equipment: Precision positioning systems and simulators.
