7014 CD/P4ADBG27GMM
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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7014 CD/P4ADBG27GMM Bearing Product Overview & Core Advantages
The 7014 CD/P4ADBG27GMM is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. This matched set features a back-to-back (DB) arrangement and is manufactured to the stringent P4A tolerance class, ensuring superior dimensional and running precision. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously while providing high stiffness and stable rotational performance, making it ideal for high-precision, high-rigidity spindles and machinery.
7014 CD/P4ADBG27GMM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7014 | Basic bearing series, with 70mm bore, 110mm OD, 40mm width. |
| C | 15° contact angle. |
| D | Duplex bearing (two single bearings supplied as a set). |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4. |
| DB | Back-to-Back arrangement for high moment rigidity. |
| G | Preload level designation. |
| MM | Bearing set manufactured for universal matching. |
7014 CD/P4ADBG27GMM Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing the bearing's resistance to moment loads and providing exceptional stiffness. This configuration, combined with a 15° contact angle, enables the bearing to efficiently support substantial combined radial and axial loads.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with tight dimensional controls, this bearing ensures minimal runout and smooth operation. The lightweight phenolic resin cage and optimized internal geometry contribute to lower friction and facilitate high-speed operation up to the specified limiting speed.
Material & Construction: Constructed from high-carbon chrome steel for rings and balls, the bearing offers high fatigue life and durability. The open design allows for customized lubrication schemes, though it is supplied with grease suitable for a wide temperature range of -30°C to 110°C.
7014 CD/P4ADBG27GMM Bearing Typical Application Areas
This high-precision duplex bearing is engineered for demanding applications where accuracy and rigidity are paramount. Typical uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Applications requiring precise shaft positioning and high stiffness.
- Industrial Pumps & Compressors: For handling significant axial and radial forces.
- Robotic Drives & Rotary Tables: Where high rotational accuracy and moment load capacity are critical.
