7213 ACD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7213 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7213 ACD/P4ADGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set pair, it delivers outstanding performance under combined radial and axial loads. Its P4A tolerance class ensures ultra-precision operation, while the moderate preload (Class C) provides optimal stiffness and minimizes deflection under operational stresses. This bearing is engineered for high-speed capability and reliable performance in precision machinery.
7213 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 7213 | Standard bearing series; 65mm bore, 120mm OD, 46mm width | Defines core bearing dimensions |
| AC | Angular Contact design | Optimized for combined loads |
| D | High contact angle (25°) | Enhanced axial load capacity |
| P4A | High precision tolerance class | Superior running accuracy for precision applications |
| DGC | Universal matchable pair (SU designation) | Pre-configured for optimal bearing arrangement and stiffness |
7213 ACD/P4ADGC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with a 25° contact angle enables the bearing to efficiently handle significant combined radial and axial loads. When mounted as a universal matchable pair, the arrangement creates a highly rigid bearing system capable of resisting complex loading conditions and moments.
Precision Engineering: Manufactured to P4A tolerance class standards, this bearing guarantees minimal runout and vibration, which is critical for applications demanding extreme rotational accuracy. The moderate preload (Class C) eliminates internal clearance, enhancing system stiffness and positioning accuracy while reducing noise.
High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 36,000 rpm. This, combined with the optimized internal geometry, makes it suitable for high-speed spindle applications.
Material & Construction: Components made from high-grade chrome steel provide excellent wear resistance and durability. The bearing comes lubricated for immediate use and operates effectively within a temperature range of -30°C to 110°C.
7213 ACD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring superior rigidity and speed.
- High-Speed Machining Centers: Applications where dynamic stability and accuracy are paramount.
- Precision Rotary Tables: Indexing and positioning systems demanding minimal runout.
- Industrial Pumps & Compressors: For handling axial and radial loads in demanding fluid-handling equipment.
- Medical Equipment: High-speed centrifuges and imaging device rotors.
- Aerospace Actuation Systems: Control surface mechanisms and other precision aerospace components.
