MR105 2rs
MR Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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MR105 2rs Bearing Product Overview & Core Advantages
The MR105 2RS is a sealed single row deep groove ball bearing designed for reliable performance in compact applications. This metric bearing excels in handling radial loads and offers robust operation due to its sealed construction. Its small footprint, with a 5mm bore and 10mm outside diameter, makes it ideal for space-constrained assemblies requiring high reliability and consistent performance. The combination of chrome steel rings, a stainless steel cage, and integrated seals provides a durable solution for various industrial and precision applications.
MR105 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR105 | Basic bearing designation indicating a metric, single row deep groove ball bearing with a 5mm bore diameter. |
| 2RS | Signifies contact rubber seals on both sides. The "2" indicates two seals, and "RS" denotes Nitrile Rubber (Buna-N) seals that provide excellent contamination exclusion and grease retention. |
MR105 2rs Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The deep groove raceway and robust construction enable efficient handling of radial dynamic loads up to 82 lbf and radial static loads up to 30 lbf.
- Sealed & Protected Design: The double rubber seals (2RS) effectively shield the internal components from contaminants like dust and moisture, while retaining lubrication for extended service life.
- Precision & Stability: Manufactured to ABEC1 tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring consistent fit and reliable performance.
- High-Speed Capability: Features a stainless steel cage that ensures stability and allows for a limiting speed of 50,000 rpm, suitable for various high-speed applications.
- Internal Clearance: The specified MC3 radial internal clearance (0.002mm to 0.013mm) is optimized for general operating conditions, providing smooth operation with minimal friction and heat generation.
MR105 2rs Bearing Typical Application Areas
The MR105 2RS is widely used in applications requiring compact size, reliability, and protection from harsh environments. Key sectors include:
- Small Electric Motors (e.g., drones, RC models, cooling fans)
- Precision Instruments and optical devices
- Office Automation Equipment (printers, scanners, copiers)
- Medical Devices and laboratory equipment
- Low-Power Gearboxes and small mechanical drives
