7015 ACD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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7015 ACD/HCP4ADBC Bearing Product Overview & Core Advantages
The 7015 ACD/HCP4ADBC is a precision duplex pair of Angular Contact Ball Bearings designed for applications demanding exceptional rotational accuracy and rigidity. This Back-to-Back (DB) matched set is preloaded to Moderate / Class C specifications, ensuring optimal stiffness and minimal axial and radial runout under combined loads. Its construction, featuring a 25° contact angle and ceramic balls, is engineered to handle high-speed operation and demanding performance requirements, making it an ideal solution for high-precision spindles and machinery.
7015 ACD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 7015: Basic bearing series, indicating a 75 mm bore diameter and a 115 mm outside diameter.
- A: Denotes a 25° contact angle, optimized for supporting significant axial loads.
- C: Indicates a Moderate / Class C preload applied to the bearing set.
- D: Signifies a Duplex (paired) bearing configuration.
- HC: Specifies the cage material as Phenolic (Hybrid Cage), offering low weight and high-speed capability.
- P4A: Defines the tolerance class, signifying very high precision levels for both bore and outside diameter runout.
- DB: Specifies the matched arrangement as Back-to-Back (DB), providing high moment rigidity.
- C: Indicates the use of Ceramic (Si3N4) balls, which reduce centrifugal forces, lower operating temperature, and enable higher limiting speeds.
7015 ACD/HCP4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The Back-to-Back (DB) duplex arrangement creates a robust, statically determinate bearing system that provides high resistance to moment loads and offers excellent stability, capable of supporting combined radial and axial loads.
High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage (HC) significantly reduces rotating mass and centrifugal forces. This design directly contributes to a lower operating temperature and a higher limiting speed, making it suitable for high-speed applications.
Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and superior rotational accuracy, which is critical for applications like machine tool spindles.
Preloaded & Ready-to-Install: The bearings are supplied as a matched set with a factory-applied moderate preload (Class C), simplifying installation and guaranteeing immediate, consistent performance without the need for on-site adjustment.
7015 ACD/HCP4ADBC Bearing Typical Application Areas
This high-precision, high-speed bearing set is typically employed in:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Spindles
- Precision Grinding Equipment
- High-Speed Pumps and Compressors
- Other industrial machinery requiring high rigidity and exceptional rotational accuracy.
