S7018 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7018 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
1.17 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
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°C to 110 °C
Radial dynamic load rating
16672 lbf
Radial static load rating
16200 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
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:
$ 263.11
/ each
In Stock
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S7018 ACDGA/P4A Bearing Product Overview & Core Advantages
The S7018 ACDGA/P4A is a precision double row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Designed to simultaneously handle combined radial and axial loads from both directions, this bearing features a compact cross-section and is pre-loaded for superior stability. Its P4A super-precision tolerance and sealed construction make it ideal for high-reliability, high-speed machinery where minimal runout and long-term performance are critical.
S7018 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Double row construction for high rigidity and load capacity. |
| GA | Indicates a specific internal clearance and preload grade (Extra light / Class A). |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for enhanced running accuracy. |
S7018 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides significantly increased radial and axial stiffness compared to single row bearings, enabling stable operation under combined loads.
- Precision & High-Speed Performance: Manufactured to P4A tolerance with a phenolic resin cage, the bearing ensures smooth operation and is capable of achieving a limiting speed of 15,000 rpm.
- Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is designed for maintenance-free operation within its specified temperature range.
- Universal Matching: Designed as a Universal Matchable (SU) bearing, it can be universally paired with other bearings from the same manufacturing lot in various arrangements without performance degradation.
S7018 ACDGA/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
