SMR63
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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SMR63 Bearing Product Overview & Core Advantages
The SMR63 is a metric miniature ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing, it excels at handling radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its open design allows for versatile lubrication options, making it suitable for high-speed operation up to 63,900 rpm. This bearing is characterized by its ABEC1 precision class and MC3 radial internal clearance, ensuring smooth and consistent operation in demanding environments.
SMR63 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| SMR | Series designation for miniature metric bearings |
| 63 | Specifies the core dimensions: 3mm bore, 6mm OD, 2mm width |
| Open | No seals or shields, allowing for custom lubrication and high-speed capability |
SMR63 Bearing Structural Features & Performance Benefits
Compact & Lightweight Design: With dimensions of just 3x6x2 mm and a weight of only 0.2 grams, this bearing is ideal for space-constrained applications without compromising performance.
High-Speed Capability: The optimized stainless steel cage and 8 precision balls with a diameter of 0.8 mm enable stable operation at limiting speeds up to 63,900 rpm.
Corrosion Resistance: All components, including rings, balls, and cage, are manufactured from stainless steel, providing excellent protection against corrosion and extending service life.
Precision Performance: Built to ABEC1 tolerance class with MC3 radial internal clearance (0.002mm to 0.013mm), ensuring smooth rotation and reduced vibration for precision mechanisms.
SMR63 Bearing Typical Application Areas
- Small DC Motors & Stepper Motors - Providing reliable support for high-speed rotors
- Precision Instruments & Optical Devices - Ensuring smooth and accurate movement
- Medical Devices & Dental Handpieces - Where compact size and corrosion resistance are critical
- Office Automation Equipment - Including printers, scanners, and copiers
- Robotics & Miniature Actuators - For precise motion control in compact joints
- Radio-Controlled Models & Drones - Supporting high-RPM motors and transmissions
