R188zz
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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R188zz Bearing Product Overview & Core Advantages
The R188zz is a single row deep groove ball bearing designed for high performance in compact spaces. Engineered with inch dimensions, it excels in applications requiring reliable radial load capacity and smooth operation. Its shielded construction protects against contamination while the ABEC1 precision class ensures consistent performance. This bearing is ideal for equipment demanding a balance of compact size, dependable operation, and cost-effectiveness.
Model Code Breakdown
| Suffix / Prefix | Technical Meaning |
|---|---|
| R | Prefix denoting an Inch Series bearing. |
| 188 | The specific bearing size designation within the R-series. |
| zz | Indicates the bearing is equipped with shields on both sides. This provides effective protection against large particulate contaminants, retaining lubrication and extending service life. |
R188zz Bearing Structural Features & Performance Benefits
- Robust Construction: Manufactured from chrome steel rings and balls with a stainless steel cage, this bearing offers excellent durability and resistance to wear.
- Effective Contamination Protection: The double-shielded (zz) design safeguards the internal components from dust and debris, making it suitable for environments where sealing is critical but contact seals are not required.
- Precision Performance: As an ABEC1 class bearing, it provides reliable running accuracy and low noise/vibration for a wide range of industrial applications.
- Optimized Internal Geometry: The deep groove raceway and complement of 8 precision balls enable efficient handling of the 207 lbf dynamic load rating and 80 lbf static load rating.
- Wide Temperature Range: Suitable for operations from -86 to 230 °F, offering flexibility for various operational environments.
R188zz Bearing Typical Application Areas
The R188zz is widely used in precision instruments and small machinery where its compact bearing dimensions (0.25" bore, 0.5" OD) and reliable performance are essential. Common applications include:
- Small Electric Motors and Gearboxes
- Precision Medical Devices and Dental Handpieces
- Computer Cooling Fans and Spindles
- Office Automation Equipment (Printers, Scanners)
- Radio Control Models and Drones
- Instrumentation and Guidance Systems
