SMF137zz
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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SMF137zz Bearing Product Overview & Core Advantages
The SMF137zz is a metric single row deep groove ball bearing designed for precision applications requiring reliable performance in compact spaces. Featuring stainless steel construction throughout (rings, balls, and cage) and integrated shields (zz), this bearing delivers excellent corrosion resistance and contaminant protection. Its optimized design provides high rotational accuracy with ABEC1 tolerance class, making it ideal for applications demanding smooth operation and extended service life. The bearing's compact dimensions (7mm bore × 13mm OD × 4mm width) combined with its flanged outer ring enable secure mounting and precise axial location in assemblies.
SMF137zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Advantage |
|---|---|---|
| zz | Double-sided metal shields | Provides effective contaminant exclusion while maintaining low torque characteristics |
| Stainless Steel | Complete stainless steel construction (rings, balls, cage) | Superior corrosion resistance for harsh environments and extended service life |
| Flanged | Outer ring with flange (14.6mm diameter) | Simplifies mounting and provides accurate axial positioning |
SMF137zz Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables the bearing to handle radial loads efficiently while accommodating moderate axial loads in both directions, providing versatile load capacity in a compact package.
Precision Engineering: Manufactured to ABEC1 tolerance class with controlled radial internal clearance (MC3: 0.002-0.013mm), ensuring smooth operation and minimal vibration for precision applications.
Corrosion-Resistant Construction: All components manufactured from stainless steel, including the integrated 300 series stainless steel shields, providing excellent protection against corrosion and contamination in demanding environments.
High-Speed Capability: The stainless steel cage and optimized ball complement (12 balls of 1.2mm diameter) enable stable operation up to 36,000 rpm limiting speed, making it suitable for high-speed miniature applications.
Flanged Design Advantage: The outer ring flange (14.6mm diameter × 0.8mm thickness) facilitates easy installation and precise axial positioning, reducing assembly complexity and improving system reliability.
SMF137zz Bearing Typical Application Areas
- Small precision motors and miniature DC motors
- Medical devices and dental handpieces
- Optical instruments and laboratory equipment
- Office automation equipment including printers and scanners
- Robotic joints and miniature automation systems
- Consumer electronics requiring high reliability and corrosion resistance
- Food processing equipment where stainless steel construction is mandatory
