SMF82xzz
SMF Series Stainless Steel Flanged Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SMF82xzz Bearing Product Overview & Core Advantages
The SMF82xzz is a metric miniature ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row radial ball bearing, it is engineered to primarily handle radial loads with high efficiency. Its construction from stainless steel throughout provides excellent corrosion resistance, making it suitable for demanding environments. The bearing features a shielded design to protect against contamination, ensuring long service life and consistent operation in high-speed scenarios, with a limiting speed of 63,900 rpm. Its small footprint, with a bore of just 2.5 mm and an outside diameter of 8 mm, makes it ideal for space-constrained assemblies in precision instruments and small machinery.
SMF82xzz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| SMF82 | Basic bearing series designation, indicating a specific size and flange configuration. | Defines the core bearing dimensions and external geometry. |
| x | Placeholder for specific internal design variations (e.g., clearance). | Allows for customization to application-specific needs. |
| zz | Indicates the bearing is shielded on both sides. | Provides effective protection against dust and debris, enhancing reliability and enabling maintenance-free operation in many applications. |
Note on Lubrication: This bearing is supplied without lubrication ("Required" per spec). For optimal high-speed performance and longevity, a compatible lubricant suitable for the application's temperature range (-30°C to 110°C) must be selected and applied.
SMF82xzz Bearing Structural Features & Performance Benefits
Compact and Robust Design: With a width of only 2.5 mm and an integral flange (outer diameter 9.2 mm), this bearing offers a space-saving solution that simplifies mounting and axial location in housings.
High-Speed Capability: The use of a stainless steel cage and seven precision balls ensures stable operation at high rotational speeds, up to 63,900 rpm, making it a capable high-speed bearing.
Corrosion Resistance: Manufactured entirely from 300 series stainless steel, including the shields, the bearing is highly resistant to rust and corrosion, suitable for use in harsh or washdown environments.
Precision Performance: Built to ABEC1 tolerance class with a controlled MC3 radial internal clearance (0.002mm to 0.013mm), this bearing provides smooth and quiet running, essential for precision applications.
SMF82xzz Bearing Typical Application Areas
The SMF82xzz is ideally suited for a wide range of compact and precision-driven applications, including:
- Small DC Motors and Gearboxes
- Precision Medical Devices and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Precision Measuring Tools
- Small Fans and Blowers
- Robotics and RC Models
