SMR128 2rs
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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SMR128 2rs Bearing Product Overview & Core Advantages
The SMR128 2rs is a sealed miniature ball bearing engineered for precision applications requiring compact design and reliable performance. As a single row deep groove ball bearing, it excels at handling radial loads while also accommodating moderate axial loads in both directions. Constructed entirely from stainless steel with integrated rubber seals, this bearing offers excellent corrosion resistance and is pre-lubricated for immediate use. Its small footprint, with a 8mm bore and 12mm outside diameter, makes it an ideal solution for high-precision, space-constrained mechanisms demanding long service life and consistent operation.
SMR128 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMR128 | Standard bearing series designation indicating a metric, miniature deep groove ball bearing with an 8mm bore diameter. |
| 2RS | Denotes contact-type rubber seals (RS) on both sides (2). This provides superior protection against contamination and retains lubricant effectively. |
SMR128 2rs Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to ABEC1 tolerance class with a MC3 radial internal clearance (0.002mm to 0.013mm), ensuring smooth and precise rotation. The single-row deep groove raceway and stainless steel construction provide consistent dimensional stability and rigidity.
- Optimized Load Capacity: Features a radial dynamic load rating of 94 lbf and a static load rating of 44 lbf. The deep groove geometry allows it to handle combined radial and bidirectional axial loads efficiently.
- Durability & Corrosion Resistance: All critical components—rings, balls, and cage—are made from stainless steel, offering excellent resistance to rust and corrosion in demanding environments.
- Effective Sealing & Maintenance: The 2RS double rubber seals effectively shield the bearing from dust, moisture, and other contaminants while retaining the factory-applied lubricant. This design supports a limiting speed of 36,000 rpm and contributes to a long, maintenance-free service life.
SMR128 2rs Bearing Typical Application Areas
- Precision miniature motors and gearboxes
- Small industrial pumps and compressors
- Medical and dental handpieces
- Office automation equipment (printers, scanners)
- Robotic joints and small automation drives
- Precision instruments and measurement devices
- RC models and drones
