7015 ACD/P4ADGB
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7015 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 7015 ACD/P4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Its 25° contact angle and Universal Matchable (SU) design enable it to accommodate combined radial and axial loads simultaneously. Manufactured to a P4A tolerance class, this bearing offers superior running accuracy, making it ideal for high-speed spindles and other precision machinery where high rigidity and operational reliability are paramount.
7015 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series and size designation (75mm bore, 115mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a Universal Matchable (SU) bearing, designed to be mounted in pairs (back-to-back, face-to-face, or tandem) without selective shimming. |
| P4A | Indicates a high-precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DGB | Denotes a Light preload (Class B) applied to the bearing set. This preload increases system rigidity and improves rotational accuracy. |
7015 ACD/P4ADGB Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The 25° contact angle is engineered to provide an excellent balance between radial load capacity and axial load capacity, making the bearing highly effective for combined loads.
High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 28,000 rpm, which is critical for high-speed applications like machine tool spindles.
Enhanced Rigidity and Precision: The Universal Matchable (SU) design, combined with a Light preload (Class B), ensures high system stiffness and precise shaft positioning. This configuration minimizes deflection under load, leading to improved machining quality and dimensional stability.
Premium Material Construction: Manufactured from high-grade chrome steel for both rings and balls, the bearing delivers high durability, wear resistance, and a long operational lifespan.
7015 ACD/P4ADGB Bearing Typical Application Areas
The 7015 ACD/P4ADGB is ideally suited for high-performance machinery requiring supreme precision and speed. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Industrial Pumps and Compressors: For applications demanding high axial and radial stiffness.
