R188
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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R188 Bearing Product Overview & Core Advantages
The R188 inch series ball bearing is a precision-engineered single row radial ball bearing designed for reliable performance in compact applications. Manufactured to ABEC1 precision class, it delivers consistent operation and is ideal for scenarios requiring dependable radial load support. Its open design allows for versatile lubrication options, while its compact dimensions (0.25" bore, 0.5" OD) make it suitable for space-constrained assemblies demanding high rotational accuracy.
Model Code & Specification Breakdown
| Specification | Value / Code | Technical Significance |
|---|---|---|
| System of Measurement | Inch | Designed for imperial system applications |
| Seal Type | Open | Allows for custom lubrication; requires controlled environments |
| Tolerance Class | ABEC1 | Standard precision grade for reliable general performance |
| Radial Internal Clearance | MC3 (0.00008" to 0.0005") | Normal clearance range suitable for most operating conditions |
R188 Bearing Structural Features & Performance Benefits
Optimized Single Row Design: The single row construction provides a compact and lightweight solution without compromising on radial load capacity (207 lbf dynamic, 80 lbf static).
High-Quality Material Composition: Both rings and 8 precision balls are manufactured from Chrome Steel, ensuring excellent wear resistance and durability. The Stainless Steel cage provides secure ball guidance and corrosion resistance.
Balanced Performance Characteristics: With a limiting speed of 40,000 rpm and a wide operating temperature range (-86 to 230 °F), this bearing is versatile for various operational demands. The specified MC3 radial internal clearance ensures stable operation under normal loads and speeds.
R188 Bearing Typical Application Areas
- Small Electric Motors and miniature gearboxes
- Precision Instruments and optical devices
- Office Automation Equipment such as printers and scanners
- Medical Devices and laboratory equipment
- RC Models and hobbyist applications
- Light-duty Industrial Machinery with space constraints
