S7018 ACD/P4ATGA
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7018 ACD/P4ATGA
Basic Information
System of measurement
Metric
Weight
3.5 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
72 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°C to 110 °C
Radial dynamic load rating
36675 lbf
Radial static load rating
48600 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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:
$ 732.19
/ each
In Stock
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S7018 ACD/P4ATGA Bearing Product Overview & Core Advantages
The S7018 ACD/P4ATGA is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. Designed with a 25° contact angle and an extra light preload (Class A), it excels at simultaneously handling combined radial and axial loads in both directions. Its P4A tolerance class and universal matchable (SU) design ensure high running accuracy and simplified mounting in complex arrangements. This bearing is the ideal solution for high-speed, high-rigidity spindles requiring uncompromising performance.
S7018 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° contact angle, double row design | Optimized for high rigidity and combined load capacity. |
| P4A | Super-precision tolerance class | Guarantees extremely low runout and high-precision operation. |
| TGA | Sealed, grease lubricated | Provides contamination protection and long-term, maintenance-free operation. |
S7018 ACD/P4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design and 25° contact angle provide superior stiffness, enabling the bearing to support significant combined radial and bidirectional axial loads with minimal deflection.
- Super-Precision Performance: Manufactured to P4A tolerance standards with tight dimensional controls on bore, outside diameter, and width, ensuring exceptional running accuracy and system stability.
- Optimized High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to lower centrifugal forces, supporting a high limiting speed of 15,000 rpm.
- Long Service Life & Reliability: The sealed construction retains grease and excludes contaminants, while the chrome steel rings and balls provide high durability and fatigue resistance under dynamic loads.
S7018 ACD/P4ATGA Bearing Typical Application Areas
This precision bearing is ideally suited for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Industrial Robotics: High-accuracy rotary joints and arm actuators.
- Medical Equipment: Dental handpieces and imaging device rotors.
