7018 ACE/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7018 ACE/P4A Bearing Product Overview & Core Advantages
The 7018 ACE/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Characterized by its 25° contact angle and P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high axial loads in one direction while simultaneously handling significant radial loads. Its phenolic cage and optimized internal geometry contribute to exceptional high-speed capabilities, making it an ideal solution for machine tool spindles and other high-rotation equipment where rigidity and accuracy are paramount.
7018 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 7018 | Standard bearing series designation, indicating bore diameter (90 mm), outside diameter (140 mm), and width (24 mm). |
| ACE | Internal design code signifying a 25° contact angle and optimized internal geometry for high-speed operation. |
| P4A | Denotes the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
7018 ACE/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4 tolerance class, the bearing ensures minimal runout and vibration, providing stable and precise rotational performance. The 25° contact angle is optimized to deliver high axial load capacity and system rigidity.
High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 19,000 rpm. This makes it suitable for demanding high-speed spindle applications.
Superior Load Capacity: With a dynamic load rating of 7605 lbf and a static load rating of 6750 lbf, this bearing is built to handle significant combined loads (radial and axial) reliably.
Pre-Lubricated & Open Design: The bearing comes pre-lubricated for immediate use and features an open design, allowing for customized lubrication regimes to suit specific operational needs within a temperature range of -30°C to 110°C.
7018 ACE/P4A Bearing Typical Application Areas
The 7018 ACE/P4A is ideally suited for high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Speed Motors and Precision Gearboxes
- Aerospace & Defense Systems (gyroscopes, navigation systems)
- Medical Equipment (high-speed dental handpieces, centrifuges)
- Robotics and Precision Automation equipment
