R156 2rs
R 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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R156 2rs Bearing Product Overview & Core Advantages
The R156 2rs is a sealed single row deep groove ball bearing designed for reliable performance in compact, precision applications. Engineered from high-grade chrome steel with a stainless steel cage, it excels at handling radial loads and offers robust operation within a wide temperature range. Its primary advantages include its compact inch dimensions (0.1875" bore), integrated nitrile rubber seals (2RS) for effective contamination exclusion, and a design optimized for applications requiring consistent performance and durability.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| R156 | Bearing series and size designation | Identifies the specific inch-size bearing with a 0.1875" bore and 0.3125" outside diameter. |
| 2RS | Double-sided contact seals | Indicates the bearing is fitted with nitrile rubber seals on both sides, providing superior protection against dust and moisture, retaining lubricant for extended service life. |
R156 2rs Bearing Structural Features & Performance Benefits
- Robust Sealing: The double-lipped nitrile rubber seals (2RS) effectively shield the internal components from contaminants and retain lubricant, making the bearing suitable for demanding environments and contributing to its low-maintenance characteristics.
- Optimized Internal Geometry: The deep groove raceway and precision-ground chrome steel components enable efficient handling of radial dynamic loads up to 69 lbf.
- Stable Cage Design: The stainless steel cage ensures uniform ball spacing and guidance, promoting smooth operation and contributing to the bearing's limiting speed of 53,000 rpm.
- Precision & Consistency: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), this bearing provides reliable, repeatable performance for a wide range of industrial applications.
R156 2rs Bearing Typical Application Areas
The R156 2RS is ideally suited for compact mechanisms and precision devices requiring reliable, sealed bearing performance. Common applications include:
- Small electric motors and gearmotors
- Precision instruments and medical devices
- Office automation equipment (e.g., printers, scanners)
- Small pumps and fans
- Radio-controlled models and drones
