7213 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
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7213 ACD/P4A Bearing Product Overview & Core Advantages
The 7213 ACD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads, this single-row bearing features a 25° contact angle for optimal thrust capacity. Manufactured to P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and precision machinery. Its phenolic resin cage contributes to smooth operation at high rotational speeds.
7213 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7213: Basic series designation (65mm bore, 120mm OD)
- AC: Angular Contact design with a 25° contact angle
- D: Signifies a high-precision version with optimized internal geometry
- P4A: Denotes P4 tolerance class with specific dimensional and running accuracy requirements per ABEC-7 standards
7213 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized 25° contact angle and precision-ground raceways provide excellent stability and the ability to support significant combined loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures low inertia and excellent guidance, enabling the bearing to achieve a high limiting speed of 17,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing guarantees tight dimensional control for applications requiring high running accuracy and minimal vibration.
- Preload Availability: The bearing is supplied with a preload, which increases system stiffness, reduces noise, and improves rotational accuracy.
7213 ACD/P4A Bearing Typical Application Areas
- Machine Tool Spindles (milling, grinding, and lathe applications)
- High-Speed Motors and Spindles
- Precision Gearboxes
- Medical and Dental Equipment
- Aerospace Actuation Systems