SR188 2rs
SR 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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SR188 2rs Bearing Product Overview & Core Advantages
The SR188 2RS is a high-precision, single row deep groove ball bearing designed for superior performance in demanding applications. Engineered with inch dimensions, it offers a compact and robust solution for radial load support. A key feature is its integral 2RS double rubber contact seal, which provides excellent protection against contamination while retaining lubrication, making it suitable for applications requiring long-term reliability with minimal maintenance. Constructed entirely from stainless steel (rings, balls, and cage), it provides excellent corrosion resistance, ensuring consistent performance across a wide temperature range from -86 to 230 °F. Its ABEC1 precision class and optimized internal geometry contribute to smooth, quiet operation, making it an ideal choice for precision instruments and compact machinery.
SR188 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Benefit |
|---|---|---|
| SR188 | Standard Bearing Series & Size Designation | Defines the inch boundary dimensions: 0.25" bore, 0.5" OD, 0.1875" width. |
| 2RS | Double Rubber Contact Seals (Both Sides) | Provides superior sealing effectiveness against dust, moisture, and other contaminants. Retains lubricant for extended service life. |
SR188 2rs Bearing Structural Features & Performance Benefits
- Robust Construction & Corrosion Resistance: Manufactured from stainless steel for the inner ring, outer ring, balls, and cage, this bearing is inherently resistant to rust and corrosion, ensuring reliability in harsh environments and washdown applications.
- Optimized Internal Geometry: The deep groove raceway and precisely sized balls enable the bearing to handle not only significant radial loads (186 lbf dynamic) but also moderate axial loads in both directions.
- Effective Sealing Solution: The 2RS nitrile rubber seals make the bearing pre-lubricated for life in many applications, reducing maintenance needs and protecting the bearing's internal components from premature failure.
- Precision Performance: Built to ABEC1 tolerance standards, the bearing ensures smooth rotation and reduced vibration, which is critical for applications requiring high running accuracy.
- Specified Internal Clearance: The MC3 radial internal clearance is optimized for general operating conditions, providing a balance between quiet operation and thermal expansion management.
SR188 2rs Bearing Typical Application Areas
The SR188 2RS is versatile and finds use in a wide range of industries and equipment, including:
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment where corrosion resistance and smooth operation are paramount.
- Small Motors and Gearboxes: Used in fractional horsepower motors, servo motors, and compact gear drives requiring reliable, sealed bearings.
- Food and Beverage Processing Equipment: Ideal for conveyors, pumps, and mixers due to its stainless steel construction and suitability for washdown environments.
- Office Automation and Robotics: Employed in printers, scanners, and small robotic joints where space is limited and reliable performance is essential.
