S7018 ACDTP/P4B
Sealed Super Precision Angular Contact Ball Bearings
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S7018 ACDTP/P4B Bearing Product Overview & Core Advantages
The S7018 ACDTP/P4B is a precision single-row angular contact ball bearing engineered for high-performance applications. Positioned for demanding scenarios requiring exceptional rotational accuracy and rigidity, it features a 25° contact angle and is supplied with a preload for enhanced system stiffness. Its primary characteristics include the ability to accommodate combined radial and axial loads simultaneously, superior high-speed capabilities, and reliable operation within a specified temperature range. Manufactured to P4 (ABEC-7) tolerance class, it is an ideal choice for high-precision and high-reliability machinery.
S7018 ACDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 90mm bore, 140mm OD, and 24mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DTP | Indicates a phenolic (P) cage and that the bearing is sealed and pre-lubricated. |
| P4B | Specifies the P4 (ABEC-7) tolerance class for ultra-precision running accuracy. |
S7018 ACDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 25° contact angle and an applied preload significantly increases system rigidity, minimizing deflection under load and ensuring precise shaft positioning, which is critical for high-precision applications.
- Superior Load Capacity: Engineered to handle significant combined loads, including heavy radial loads and thrust loads in one direction, making it suitable for complex loading conditions.
- Optimized High-Speed Performance: The lightweight and robust phenolic cage reduces centrifugal forces, allowing for a high limiting speed of 8,500 rpm. The optimized internal geometry further enhances high-speed stability.
- Sealed and Lubricated for Long Life: As a sealed and pre-lubricated unit, the bearing is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S7018 ACDTP/P4B Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for applications requiring high speed, rigidity, and accuracy. Common uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
