S7015 ACD/P4AQBCC
Sealed Super Precision Angular Contact Ball Bearings
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S7015 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The S7015 ACD/P4AQBCC is a precision quadruplex matched set of angular contact ball bearings designed for the most demanding applications. This P4A tolerance class configuration, arranged in a Quadruplex Back-to-Back (QBC) pattern, delivers exceptional system rigidity and rotational accuracy. Its primary advantage lies in its ability to handle complex combined loads, including significant radial and bidirectional axial loads, making it an ideal solution for high-precision, high-stiffness spindles and machinery where uncompromising performance is critical.
S7015 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7015 | Bearing Series & Size | Indicates a 75mm bore, 115mm OD, 80mm width bearing from the 70-series. |
| ACD | Contact Angle & Design | Specifies a 25° contact angle for optimal axial load capacity. |
| P4A | Tolerance Class | Denotes a super-precision tolerance level for extremely high running accuracy. |
| QBCC | Matched Set Configuration | Defines a Quadruplex Back-to-Back (4 bearings) set with Moderate (Class C) preload for maximum system stiffness. |
S7015 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
- Unmatched Rigidity & Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement creates an extremely rigid bearing system, capable of withstanding heavy combined loads and moments. With a radial dynamic load rating of 29,925 lbf and a static load rating of 41,850 lbf, it ensures reliable operation under strenuous conditions.
- Super-Precision Performance: Manufactured to P4A tolerance class with a 25° contact angle, this bearing guarantees minimal runout and exceptional rotational accuracy, which is paramount for high-speed machining and precision instrumentation.
- Optimized for High-Speed Operation: The phenolic cage is lightweight and robust, contributing to stable operation and a high limiting speed of 22,000 rpm. The standard grease lubrication is suitable for the specified operating temperature range.
- Sealed & Ready-to-Use: As a sealed bearing with factory-applied grease, it is protected from contamination and is ready for immediate installation, reducing maintenance requirements.
S7015 ACD/P4AQBCC Bearing Typical Application Areas
This high-performance precision quadruplex matched set is engineered for advanced machinery requiring the ultimate in accuracy and stiffness. Key applications include:
- High-Speed / High-Precision Machine Tool Spindles (e.g., CNC milling, grinding, and jig boring machines)
- Precision Grinding Spindles
- High-Rigidity Industrial Robots and Automation Equipment
- Aerospace & Defense Test Equipment and Positioning Systems
