W 618/8
W Series Stainless Steel Miniature Bearings
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Basic Information
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Performance
Materials
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W 618/8 Bearing Product Overview & Core Advantages
The W 618/8 is a metric single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. Engineered from stainless steel for excellent corrosion resistance, this open-type bearing excels in handling radial loads efficiently. Its compact design, with a minimal cross-section, makes it an ideal choice for applications where space is limited. Manufactured to P0 tolerance class, it ensures consistent and reliable operation, making it a fundamental component for various precision mechanisms.
W 618/8 Bearing Model Code Explained, Specifications & Naming Convention
The model designation W 618/8 provides specific technical information:
- W: Indicates a stainless steel design.
- 618: Denotes the standard "618" series, characterizing a deep groove ball bearing with an extremely low cross-section.
- /8: Specifies a bore diameter of 8 mm.
- Key Implied Specifications: The model implies an open seal type and standard CN radial internal clearance.
W 618/8 Bearing Structural Features & Performance Benefits
The W 618/8's performance is derived from its robust construction and material selection:
- High Corrosion Resistance: Constructed entirely from stainless steel (rings, balls, and cage), this bearing is suitable for harsh environments and applications requiring washdown or exposure to moisture.
- Precision & Reliability: Built to P0 tolerance class and standard CN radial internal clearance, it offers predictable performance and smooth operation, which is critical for precision equipment.
- Compact and Lightweight: With a width of only 4 mm and a weight of just 0.0031 kg, it is engineered for applications with severe space and weight constraints.
- Versatile Operating Range: Capable of operating within a temperature range of -30°C to 120°C, providing flexibility for various operational conditions.
W 618/8 Bearing Typical Application Areas
The W 618/8 is ideally suited for a wide range of compact and precision-driven applications, including:
- Precision instruments and measuring devices
- Small electric motors and miniature gearboxes
- Medical equipment and dental handpieces
- Office automation equipment (e.g., printers, scanners)
- Robotics and miniature automation systems
- Radio-controlled models and drones
