W 617/4
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
W 617/4 Bearing Product Overview & Core Advantages
The W 617/4 is a metric miniature deep groove ball bearing designed for applications demanding compact size, reliable performance, and corrosion resistance. As a single row bearing with an open design, it excels in handling primarily radial loads. Manufactured entirely from stainless steel, it offers excellent protection against corrosion, making it suitable for various industrial and precision instruments. Its compact dimensions (4mm bore, 7mm OD, 2mm width) and low weight make it an ideal choice for space-constrained assemblies requiring smooth operation.
Model Code In-Depth Analysis
- W 617/4: Base model number indicating a miniature deep groove ball bearing series with a 4mm bore diameter.
- Seal type: Open: The bearing has no seals or shields, allowing for higher possible speeds and easier re-lubrication, but requires a clean operating environment.
- Tolerance class: P0: Denotes standard (normal) dimensional and running accuracy per ISO standards.
- Radial internal clearance: CN: Specifies a "normal" radial internal clearance group, suitable for a wide range of general applications.
- Lubrication: None: The bearing is supplied without grease, offering flexibility for the user to apply a specialized lubricant if needed.
W 617/4 Bearing Structural Features & Performance Benefits
Compact and Lightweight Design: With a width of only 2mm and a minimal weight of 0.0002 kg, this bearing is engineered for applications where minimizing size and mass is critical.
Corrosion Resistance: The use of stainless steel for all critical components (rings, balls, and cage) ensures reliable performance in humid or corrosive environments, enhancing service life.
High-Speed Capability: The open construction, combined with a precision stainless steel cage, facilitates a high limiting speed of 95,000 rpm, making it suitable for high-speed applications like small spindles and precision tools.
Precision Performance: Manufactured to P0 tolerance class, this bearing provides consistent and precise running, contributing to the overall accuracy of the assembly.
W 617/4 Bearing Typical Application Areas
This miniature bearing is ideally suited for a wide range of small and precision equipment, including:
- Small electric motors and precision instruments
- Medical devices and dental handpieces
- Office automation equipment (e.g., printers, scanners)
- Robotics and miniature gearboxes
- Radio-controlled models and drones
