S7018 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7018 ACB/P4A
Basic Information
System of measurement
Metric
Weight
1.25 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
10.319 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
5310 lbf
Limiting speed
11 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:
$ 1106.36
/ each
In Stock
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S7018 ACB/P4A Bearing Product Overview & Core Advantages
The S7018 ACB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a P4 (ABEC-7) tolerance class, making it ideal for high-speed spindles and other precision machinery. Its key advantages include the ability to accommodate combined radial and axial loads simultaneously, high operational stability due to its phenolic cage, and readiness for use with pre-applied lubrication.
S7018 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing series and size designation. |
| ACB | Angular Contact Bearing design with a specific contact angle and internal clearance. |
| P4A | Indicates a P4 (ABEC-7) tolerance class, signifying very high dimensional and running accuracy. |
S7018 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high positional accuracy.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently support significant combined radial and axial loads.
- Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 11,000 rpm.
- Sealed and Lubricated for Longevity: As a sealed and pre-lubricated unit, it is protected from contamination and is ready for immediate installation, reducing maintenance needs.
- Material Quality: Components made from high-grade chrome steel provide excellent durability and fatigue resistance.
S7018 ACB/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision and speed are paramount. Key sectors include:
- Machine Tool Spindles: For CNC machining centers, grinders, and lathes.
- High-Frequency Motors and Spindles: Where high rotational speeds and accuracy are required.
- Precision Instrumentation: Used in measuring devices and optical equipment.
- Robotics and Automation: For high-precision joints and rotary axes.
