S7213 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7213 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S7213 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This single bearing features a 25° contact angle and P4A tolerance class, enabling it to handle combined loads (radial and axial) simultaneously with high rigidity. Its construction with ceramic balls and phenolic cage contributes to superior high-speed performance, reduced weight, and extended service life, making it ideal for precision machinery where uncompromising performance is critical.
S7213 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| AC | Angular Contact | Optimized for combined radial and axial loads |
| DGA | Duplex arrangement, ground preload (Extra Light / Class A) | Provides high rigidity and precise running accuracy |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) | Enhanced speed capability, reduced weight, and longer life |
| P4A | High Precision Tolerance Class | Superior dimensional and running accuracy for critical applications |
S7213 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (36,000 rpm) while providing excellent wear resistance and electrical insulation properties.
Phenolic Resin Cage: The phenolic cage material offers high strength-to-weight ratio, excellent dimensional stability, and smooth operation at high speeds, contributing to the bearing's overall high-speed performance.
Precision Ground Preload: The extra light preload (Class A) ensures minimal deflection under load, providing superior running accuracy and system rigidity for precision applications.
Sealed Construction: The sealed design with factory-applied grease lubrication protects against contamination and retains lubricant, ensuring consistent performance and reduced maintenance requirements.
S7213 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles
- Precision Medical Equipment: Dental handpieces, surgical tools
- Aerospace Systems: Guidance systems, flight control actuators
- High-Speed Motors: CNC spindle motors, robotics drives
- Semiconductor Manufacturing: Wafer handling equipment, precision positioning stages
