W 618/2 X
W Series Stainless Steel Miniature Bearings
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W 618/2 X Bearing Product Overview & Core Advantages
The W 618/2 X is a metric miniature deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row radial bearing with an open design, it excels in providing smooth operation and handling primarily radial loads. Manufactured entirely from stainless steel, it offers excellent corrosion resistance, making it suitable for demanding environments. Its compact size (2mm bore, 5mm OD) and P0 tolerance class ensure high precision and consistent performance in space-constrained assemblies.
W 618/2 X Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Deep Groove Ball Bearing |
| 618 | Series designation for extra-small, thin-section bearings |
| 2 | Bore diameter code for 2 mm |
| X | Internal design and clearance specification (CN group) |
W 618/2 X Bearing Structural Features & Performance Benefits
Compact & Lightweight Design: With a width of just 2 mm and a weight of 0.0002 kg, this bearing is ideal for applications where space and weight are critical constraints.
Corrosion Resistance: The use of stainless steel for all components (rings, balls, cage) provides superior protection against corrosion, ensuring long-term reliability even in humid or chemically aggressive environments.
High-Speed Capability: The open seal type and optimized internal geometry contribute to a high limiting speed of 120,000 rpm, suitable for high-speed miniature machinery.
Precision Performance: Manufactured to P0 tolerance class with a CN radial internal clearance, this bearing delivers consistent running accuracy and low vibration for sensitive applications.
W 618/2 X Bearing Typical Application Areas
- Precision Instruments: Optical encoders, measuring devices, and laboratory equipment.
- Small Motors: Miniature DC motors, stepper motors, and fan motors.
- Medical Devices: Dental handpieces, surgical tools, and diagnostic equipment.
- Office Automation: Printers, scanners, and copiers.
- Robotics: Small robotic joints, actuators, and drone mechanisms.
