W 619/8
W Series Stainless Steel Miniature Bearings
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W 619/8 Bearing Product Overview & Core Advantages
The W 619/8 is a metric single row deep groove ball bearing designed for exceptional performance in radial load applications. Constructed entirely from stainless steel, it offers superior corrosion resistance, making it ideal for demanding environments. This bearing features an open design for high-speed operation, with a limiting speed of 53,000 rpm, and is supplied without lubrication for applications requiring a custom greasing strategy. Its compact dimensions (8mm bore, 19mm OD, 6mm width) and P0 tolerance class ensure reliable, precise operation in high-performance assemblies.
W 619/8 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| W | Stainless Steel Bearing | Indicates all major components (rings, balls, cage) are made from stainless steel, providing excellent corrosion resistance. |
| 619 | Deep Groove Ball Bearing Series | Denotes a standard single row design optimized for high-speed radial loads. |
| 8 | Bore Diameter (8 mm) | Specifies the bearing size and inner diameter for shaft mounting. |
| (Open) | No Seals / Shields | Allows for the highest possible limiting speed and facilitates custom lubrication. |
W 619/8 Bearing Structural Features & Performance Benefits
All-Stainless-Steel Construction: The use of stainless steel for the rings, balls, and cage provides outstanding resistance to rust and corrosion, ensuring long-term reliability in humid or chemically aggressive environments and complying with ROHS and REACH directives.
Optimized for High-Speed Radial Loads: The single row deep groove geometry is engineered to handle significant radial dynamic load ratings (281 lbf) at very high rotational speeds, up to 53,000 rpm. The open design minimizes friction and heat generation.
Precision and Stability: Manufactured to P0 tolerance class with a standard CN radial internal clearance, this bearing offers consistent running accuracy and stable performance under operational temperatures ranging from -30°C to 120°C.
Application-Specific Lubrication Flexibility: Being supplied without lubrication allows engineers to select a specialized grease or oil that perfectly matches the specific speed, temperature, and life requirements of their application.
W 619/8 Bearing Typical Application Areas
This precision bearing is ideally suited for applications requiring high-speed operation, corrosion resistance, and reliable radial load support. Key industries and equipment include:
- Medical and Dental Equipment: High-speed handpieces, pumps, and small precision instruments.
- Food and Beverage Processing: Machinery where corrosion resistance and washdown capability are critical.
- Small Precision Motors and Spindles: Used in high-speed fans, miniature drives, and servo motors.
- Laboratory and Analytical Instruments: Equipment requiring smooth, precise, and contamination-free rotation.
