7018 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7018 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7018 CD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched arrangement of two bearings in a Back-to-Back (DB) configuration provides superior stability and is optimized to handle combined loads, including significant radial loads and bidirectional axial loads. Manufactured to the stringent P4A tolerance class and featuring a Moderate (Class C) preload, this bearing is engineered for high-performance scenarios where precision and high rigidity are paramount.
7018 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 7018: Basic series designation, indicating a metric angular contact ball bearing with a 90mm bore and 140mm outside diameter.
- C: Denotes a 15° contact angle, optimized for handling combined loads.
- D: Indicates a duplex pair of bearings.
- P4A: Specifies the tolerance class, representing very high precision levels for dimensional and running accuracy.
- DB: Defines the matched arrangement as Back-to-Back. This configuration provides a high moment rigidity and is effective in withstanding overturning moments.
- C: Specifies the preload level as Moderate (Class C), which increases bearing rigidity and optimizes rotational accuracy.
7018 CD/P4ADBC Bearing Structural Features & Performance Benefits
The performance of the 7018 CD/P4ADBC is a direct result of its advanced construction. The duplex Back-to-Back design significantly enhances system rigidity and stability, making it exceptionally resistant to moment loads. Its 15° contact angle is ideally suited for applications with substantial combined radial and axial loads. The use of a phenolic cage contributes to smooth operation at high speeds with low friction and is suitable for the specified limiting speed. The bearings are supplied as a precision-matched set with a controlled preload, ensuring optimal performance and simplifying installation by guaranteeing immediate and precise operation.
7018 CD/P4ADBC Bearing Typical Application Areas
This high-precision, high-rigidity bearing is ideally suited for critical applications in:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes: Where low runout and high load capacity are essential.
- Industrial Pumps and Compressors: For handling significant axial and radial forces in rotating assemblies.
- High-Frequency Motors and Spindles: Demanding applications that benefit from the bearing's preload and high-speed capability.
