SMF117
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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SMF117 Bearing Product Overview & Core Advantages
The SMF117 is a metric miniature ball bearing designed for applications requiring compact dimensions and reliable performance. Constructed as a single row radial bearing with an open design, it excels in handling radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its small bore diameter of 7 mm and overall compact design make it ideal for space-constrained, high-precision mechanisms. The bearing conforms to ABEC1 tolerance class, ensuring consistent quality and performance for general precision applications.
SMF117 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| SMF117 | Standard model number indicating a specific bearing size with a 7mm bore, 11mm OD, and 2.5mm width. |
| Open | No seals or shields, allowing for higher speeds and easy re-lubrication, but requiring a clean operating environment. |
| ABEC1 | Specifies the precision class, defining tolerances for bore, OD, and width to ensure runout and dimensional accuracy. |
| MC3 | Indicates the standard radial internal clearance group (0.002mm to 0.013mm), suitable for most general applications. |
SMF117 Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a width of just 2.5 mm and a weight of only 0.69 g, this bearing is engineered for miniature assemblies where space and weight are critical factors.
- Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, providing superior corrosion resistance and durability in harsh environments.
- High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 38,700 rpm, making it suitable for fast-rotating spindles and small motors.
- Precision Performance: The ABEC1 tolerance class and controlled radial internal clearance ensure smooth, low-vibration operation, which is crucial for sensitive instrumentation.
- Flanged Outer Ring: The integrated flange (12.2 mm OD) simplifies mounting and positioning, enhancing axial location and stability within the housing.
SMF117 Bearing Typical Application Areas
The SMF117 miniature bearing is ideally suited for a wide range of compact and precision devices, including:
- Small DC Motors and stepper motors
- Precision Instrumentation and optical encoders
- Medical devices and dental handpieces
- Office automation equipment (e.g., printers, scanners)
- Robotics and RC models
- Textile machinery guides and tensioners
