7015 CD/P4ATBTC
7000 Series Super Precision Angular Contact Ball Bearings
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Ball & Washer Dimensions
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7015 CD/P4ATBTC Bearing Product Overview & Core Advantages
The 7015 CD/P4ATBTC is a precision angular contact ball bearing supplied as a matched triplex set in a back-to-back (TBT) arrangement. Engineered for high rigidity and exceptional performance in demanding applications, this bearing is designed to handle significant combined loads (radial and axial) simultaneously. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery requiring maximum stability and minimal runout.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series and size designation (75mm bore, 115mm OD). |
| CD | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy requirements. |
| TBT | Denotes a Triplex Back-to-Back matched set arrangement, providing high moment stiffness. |
| C | Signifies a Moderate preload applied to the matched set, balancing rigidity and operational smoothness. |
7015 CD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity & Moment Load Capacity: The triplex back-to-back (TBT) arrangement of three bearings creates a highly rigid support system, effectively resisting moment loads and shaft deflection. This configuration is critical for maintaining precision under heavy combined loads.
Optimized for Combined Loads: With a 15° contact angle, this bearing is engineered to support substantial radial loads alongside significant axial loads from both directions, a characteristic of the back-to-back setup.
High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 22,000 rpm. The moderate preload (Class C) further ensures stable operation at high rotational speeds.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing guarantees low vibration, high running accuracy, and consistent performance.
Material & Lubrication: Constructed from high-grade chrome steel for rings and balls, ensuring durability and long service life. The bearing is supplied lubricated for immediate installation and initial operation.
7015 CD/P4ATBTC Bearing Typical Application Areas
The 7015 CD/P4ATBTC is ideally suited for high-performance machinery requiring extreme precision and rigidity, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications demanding minimal runout and high rotational accuracy.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Industrial Pumps & Compressors: For shafts subjected to significant axial and radial forces.
