7015 CD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Ball & Washer Dimensions
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7015 CD/HCP4ADT Bearing Product Overview & Core Advantages
The 7015 CD/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional high-speed performance and high rigidity. This duplex tandem (DT) matched set is preloaded and manufactured to P4A super-precision tolerance standards, ensuring minimal runout and superior rotational accuracy. Its primary advantage lies in its ability to handle significant combined loads (radial and axial) in a compact, pre-configured assembly, making it ideal for high-reliability, high-precision spindles and machinery.
7015 CD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Standard bearing series designation, indicating bearing dimensions (75mm bore, 115mm OD, 40mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high axial rigidity. |
| D | Indicates the bearing is part of a duplex (matched pair) set. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), which reduce centrifugal forces, lower operating temperature, and enable higher limiting speeds. |
| P4A | Denotes a super-precision tolerance class with very tight dimensional and running accuracy tolerances. |
| DT | Specifies the Duplex Tandem arrangement. In this configuration, the two bearings are matched to share the axial load in the same direction, maximizing axial load capacity and rigidity. |
7015 CD/HCP4ADT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces weight and inertia, leading to lower friction, reduced heat generation, and a superior limiting speed of 31,000 rpm. This construction also enhances operational life and reliability.
High Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle are engineered to provide maximum axial stiffness and the ability to withstand heavy combined loads. The preload applied to the set eliminates internal clearance, ensuring precise shaft positioning and minimal deflection under load.
Phenolic Cage: The phenolic resin cage is lightweight and possesses excellent slip characteristics, contributing to smooth operation at high speeds and reduced cage wear.
Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures exceptional running accuracy, low vibration, and consistent performance, which is critical for applications like machine tool spindles.
7015 CD/HCP4ADT Bearing Typical Application Areas
This high-performance bearing is specifically designed for advanced machinery where precision, speed, and rigidity are paramount. Key application areas include:
- High-Speed Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-frequency Main Spindle Units
- Other high-performance industrial machinery requiring super-precision and high-speed angular contact bearings.
