7015 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7015 CDGB/P4A Bearing Product Overview & Core Advantages
The 7015 CDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Operating under P4A tolerance class, this bearing delivers superior running precision. Its 15° contact angle and Universal Matchable (SU) design enable it to handle combined radial and axial loads efficiently while allowing for precise preload adjustment when mounted in pairs. The light preload (Class B) minimizes deflection under operational stresses, making it ideal for high-speed spindles and precision machinery where high rigidity and minimal runout are critical.
7015 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 7015 | Standard bearing series designation with 75mm bore diameter | Defines basic dimensions and load capacity |
| C | 15° contact angle | Optimized for combined radial and axial loads |
| DGB | Universal Matchable bearing for duplex arrangements | Enables precise preload control in paired mounting |
| P4A | High precision tolerance class | Ensures exceptional running accuracy and minimal vibration |
7015 CDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and concentricity for high-precision applications.
Optimized Load Capacity: The 15° contact angle configuration provides excellent performance under combined radial and axial loads, with dynamic load rating of 11,858 lbf and static load rating of 11,025 lbf.
High-Speed Capability: Featuring a phenolic resin cage and optimized internal geometry, this bearing achieves a limiting speed of 24,000 rpm, making it suitable for high-speed spindle applications.
Thermal Stability: The phenolic cage material offers excellent dimensional stability across the operating temperature range of -30°C to 110°C, maintaining consistent performance under thermal variations.
Material Excellence: Constructed from chrome steel for both rings and balls, providing superior hardness, wear resistance, and fatigue life under demanding operating conditions.
7015 CDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring precision and rigidity
- Precision Robotics: Joint and articulation points in industrial robots demanding accurate positioning
- Aerospace Components: Guidance systems, actuators, and control surface mechanisms
- Medical Equipment: High-speed dental handpieces, surgical tools, and diagnostic imaging systems
- Semiconductor Manufacturing: Wafer handling equipment, precision positioning stages, and inspection machinery
- High-Frequency Spindles: PCB drilling, engraving machines, and small tool machining centers
