S7018 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7018 ACD/P4A
Basic Information
System of measurement
Metric
Weight
1.17 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
16672 lbf
Radial static load rating
16200 lbf
Limiting speed
8.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1106.12
/ each
In Stock
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S7018 ACD/P4A Bearing Product Overview & Core Advantages
The S7018 ACD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Characterized by a 25° contact angle and P4 (ABEC-7) tolerance class, it is designed to accommodate high axial loads in one direction while simultaneously handling significant radial loads. Its phenolic cage and preloaded design contribute to exceptional high-speed capability and operational stability, making it an ideal choice for high-rigidity, high-reliability spindles and precision machinery.
S7018 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and a specific internal design optimized for high axial load capacity and high-speed operation. |
| P4A | Denotes a high-precision tolerance class equivalent to ABEC-7, ensuring extremely tight dimensional and running accuracy for demanding applications. |
S7018 ACD/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with a 25° contact angle, this bearing provides exceptional running accuracy and system rigidity, minimizing deflection under load.
- Optimized High-Speed Performance: The lightweight, robust phenolic resin cage ensures stable operation at high rotational speeds (limiting speed of 8,500 rpm), reducing centrifugal forces and friction.
- Superior Load Capacity: The angular contact design is optimized to carry high axial loads in one direction combined with significant radial loads (Dynamic Load Rating: 16,672 lbf).
- Preloaded & Ready-to-Install: Supplied with a preload, the bearing is ready for immediate installation, simplifying mounting procedures and ensuring consistent performance from startup.
S7018 ACD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling, dental handpieces, and other high-speed automated equipment.
- High-Frequency Motors: Where high rotational speeds and accuracy are critical.
- Robotics: High-precision joints and arm assemblies requiring high rigidity and responsiveness.
