7215 ACD/P4ATGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7215 ACD/P4ATGA Bearing Product Overview & Core Advantages
The 7215 ACD/P4ATGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its 25° contact angle and universal matchable (SU) design enable it to handle combined loads—significant radial and axial loads in both directions—when mounted with other bearings. The extra light preload (Class A) minimizes deflection under light loads, making it ideal for high-speed, high-precision spindles and other critical machinery where stability is paramount.
7215 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7215 | Basic bearing designation: 75 mm bore, 130 mm OD, 75 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Two bearings in a universal matchable (SU) set. |
| P4A | High Precision Tolerance Class (exceeds ABEC 7). |
| TGA | Indicates specific manufacturing and material group, including the phenolic cage. |
7215 ACD/P4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and robust construction provide high rigidity, enabling the bearing to support substantial combined radial and axial loads. The universal matchable (SU) feature allows for flexible mounting arrangements to optimize load distribution and system stiffness.
- High-Speed Performance: The lightweight phenolic cage ensures stability and reduces centrifugal forces, contributing to a high limiting speed of 36,000 rpm. This makes it an excellent high-speed bearing for demanding applications.
- Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing guarantees minimal runout and vibration for superior operational accuracy.
- Optimized Internal Geometry: Featuring 17 balls with a diameter of 15.875 mm, the internal design is optimized for smooth operation and high dynamic load capacity (33,300 lbf).
7215 ACD/P4ATGA Bearing Typical Application Areas
The 7215 ACD/P4ATGA is engineered for high-performance machinery where precision and speed are critical. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Industrial Pumps & Compressors
- Robotics: High-accuracy rotary joints and arms.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments.
