MF128 2rs
MF Series 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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MF128 2rs Bearing Product Overview & Core Advantages
The MF128 2RS is a metric miniature deep groove ball bearing engineered for precision applications requiring compact design and reliable performance. Featuring a single row construction and integral rubber seals (2RS), this bearing is optimized to handle primarily radial loads while offering protection against contamination. Its small cross-section, with a bore of just 8 mm and a width of 3.5 mm, makes it an ideal choice for space-constrained assemblies demanding high rotational accuracy and smooth operation. Manufactured to ABEC1 tolerance class, it ensures consistent performance in a wide range of industrial and electronic devices.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| MF128 | The base bearing designation, indicating a specific series of miniature deep groove ball bearings with defined dimensions (8mm bore, 12mm OD, 3.5mm width). |
| 2RS | Signifies that the bearing is equipped with contact rubber seals on both sides. This provides excellent protection against dust, moisture, and other contaminants, helping to retain lubricant and extend service life. |
MF128 2rs Bearing Structural Features & Performance Benefits
- Robust Sealing: The Nitrile Rubber (NBR) seals (2RS) effectively shield the internal components from contaminants, making the bearing suitable for environments where cleanliness is critical. The contact design offers superior sealing compared to non-contact shields.
- High-Grade Materials: The rings and balls are manufactured from Chrome Steel for high wear resistance and durability. The cage is made from Stainless Steel, providing excellent corrosion resistance and stability.
- Precision Engineering: Built to ABEC1 precision class tolerances, this bearing ensures low noise and vibration, contributing to smooth and precise rotation in sensitive applications.
- Optimized Internal Geometry: With 12 precision balls of 1.2 mm diameter, the bearing is designed for efficient load distribution and stable operation under its rated radial dynamic load of 104 lbf.
- Standard Internal Clearance: The specified MC3 radial internal clearance (0.002mm to 0.013mm) is suitable for most general applications, ensuring proper fit and function without excessive preload or play.
MF128 2rs Bearing Typical Application Areas
The MF128 2RS is widely used in compact mechanisms and devices that demand reliability and precision, including:
- Small Electric Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Precision Instruments: Used in optical encoders, gauges, and medical devices.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Consumer Electronics: Suitable for small fans, drones, and various handheld devices.
- Robotics and Automation: Applied in small joints, actuators, and guidance systems.
