7014 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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7014 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7014 CD/P4ADBC is a duplex back-to-back angular contact ball bearing designed for applications requiring exceptional precision and rigidity. This precision bearing features a P4A tolerance class and a moderate preload (Class C), making it ideal for machine tool spindles and other high-performance equipment. Its duplex DB arrangement enables it to withstand combined loads—significant radial loads and bidirectional axial loads—simultaneously. The matched set of two bearings ensures optimal preload and stiffness right from installation, providing superior rotational accuracy and system stability.
7014 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7014 | Basic bearing series, indicating a 70mm bore, 110mm OD, and 40mm width. |
| C | 15° contact angle, optimized for carrying combined loads. |
| D | Duplex (two bearings in a set). |
| DB | Back-to-Back arrangement, providing high moment stiffness. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards for running accuracy. |
| Open | No integral seals, allowing for higher limiting speeds and custom lubrication systems. |
7014 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads and tilting. This setup, combined with the 15° contact angle, provides excellent capability for handling combined radial and axial loads in both directions.
Precision & High-Speed Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The phenolic cage is lightweight and robust, contributing to smooth operation at the high limiting speed of 22,000 rpm. The open design further facilitates heat dissipation at high speeds.
Optimized for Performance: The bearings are supplied as a pre-matched set with a moderate preload (Class C) applied. This eliminates the need for complex preload adjustments during installation, guaranteeing immediate high system stiffness and accuracy.
7014 CD/P4ADBC Bearing Typical Application Areas
The 7014 CD/P4ADBC is engineered for high-precision, high-rigidity applications, including:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- High-Frequency Machining Spindles: Where high rotational speeds and precise tool positioning are critical.
- Precision Gearboxes: To support shafts under significant combined loads.
- Industrial Pumps and Compressors: For applications demanding high-speed operation and reliable axial load support.
