SMR84zz
SMR Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SMR84zz Bearing Product Overview & Core Advantages
The SMR84zz is a precision miniature ball bearing designed for applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing with stainless steel construction, it excels in handling radial loads and is suitable for high-speed operation. Its compact design (4mm bore, 8mm OD, 3mm width) makes it ideal for space-constrained, high-precision assemblies where corrosion resistance and consistent performance are critical.
SMR84zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMR | Manufacturer series designation for miniature stainless steel bearings |
| 84 | Standardized size code indicating 4mm bore, 8mm outside diameter |
| zz | Double-sided shielded construction providing effective contamination protection |
SMR84zz Bearing Structural Features & Performance Benefits
Corrosion-Resistant Construction: Manufactured entirely from stainless steel (rings, balls, cage, and shields), this bearing offers excellent resistance to corrosion and is suitable for harsh environments.
High-Speed Capability: With a limiting speed of 50,400 rpm, the bearing is engineered for demanding high-speed applications. The stainless steel cage and optimized internal geometry contribute to smooth operation at elevated rotational speeds.
Effective Sealing: The dual zz shields help retain lubrication and exclude contaminants, extending service life and reducing maintenance requirements in clean operating conditions.
Precision Performance: Built to ABEC1 tolerance class with controlled radial internal clearance (MC3), this bearing ensures consistent running accuracy and low vibration for precision mechanisms.
SMR84zz Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors
- Medical Devices: Used in surgical handpieces, dental tools, and diagnostic equipment
- Office Automation: Suitable for printers, scanners, and copiers requiring quiet, reliable operation
- Instrumentation: Perfect for precision measuring devices, optical equipment, and laboratory instruments
- Robotics: Applied in small robotic joints, actuators, and miniature automation systems
