S7213 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7213 ACD/P4A Bearing Product Overview & Core Advantages
The S7213 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Characterized by its 25° contact angle and P4 (ABEC-7) super-precision tolerance, this bearing is designed to handle significant axial loads in one direction while supporting combined radial and axial loads. Its phenolic cage, sealed design, and factory-applied lubrication ensure reliable, high-speed performance up to 10,000 rpm, making it an ideal component for demanding, high-accuracy machinery.
S7213 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACD | Angular Contact Design, 25° contact angle | Optimized for high axial load capacity and rigidity. |
| P4A | P4 (ABEC-7) Tolerance Class | Guarantees ultra-precise running accuracy and minimal vibration for high-speed spindles. |
S7213 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust construction using chrome steel rings and balls provide high resistance to deformation under combined loads, ensuring stable operation and extended service life.
- Super-Precision Performance: Manufactured to P4 tolerance class, this bearing delivers exceptional running accuracy, which is critical for applications requiring minimal runout and vibration.
- Optimized High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, while the pre-lubrication and sealed design enable reliable performance at the limiting speed of 10,000 rpm.
- Sealed & Lubricated for Longevity: The integral seals protect against contamination and retain lubricant, resulting in a maintenance-free design suitable for the specified temperature range of -30°C to 110°C.
S7213 ACD/P4A Bearing Typical Application Areas
The S7213 ACD/P4A is specified for high-precision machinery and systems where accuracy and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motors.
- Medical Equipment: Dental handpieces and imaging device rotors.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and auxiliary power units.
