R166
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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R166 Bearing Product Overview & Core Advantages
The R166 is a single row deep groove ball bearing designed for reliable performance in a wide range of industrial applications. Engineered with inch dimensions, this open-type bearing offers a compact and efficient solution for carrying primarily radial loads. Manufactured to ABEC1 precision tolerances, it ensures consistent operation and is constructed from high-grade chrome steel for durability. Its design is optimized for applications requiring a balance of performance, cost-effectiveness, and a standard MC3 radial internal clearance.
Model Code Breakdown
| Code Element | Technical Significance |
|---|---|
| R166 | The base model number identifying this specific inch-series, single row deep groove ball bearing. |
| Open (Seal Type) | No integral seals or shields. This allows for higher limiting speeds and requires external sealing for contaminated environments. |
| MC3 (Radial Clearance) | Specifies a standard radial internal clearance group, suitable for most general applications with normal operating conditions. |
| ABEC1 | Indicates the tolerance class, defining the precision of the bearing's dimensional and running accuracy. |
R166 Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and complement of 8 precision balls enable smooth operation and effective radial load support.
- High-Quality Materials: Rings and balls made from chrome steel provide high hardness and wear resistance, while the stainless steel cage ensures cage integrity and corrosion resistance.
- Precision Performance: Manufactured to ABEC1 tolerances, this bearing offers reliable running accuracy for a wide range of machinery, contributing to reduced vibration and noise.
- Optimized Internal Geometry: The standard MC3 radial clearance is designed for stable operation under normal fits and temperature ranges, preventing excessive preload or clearance during operation.
- Broad Temperature Range: A functional temperature range from -86 to 230 °F makes it suitable for various environmental conditions.
R166 Bearing Typical Application Areas
The R166 bearing is ideally suited for applications requiring compact bearing dimensions and reliable radial load capacity. Common uses include:
- Small Electric Motors and Gearboxes
- Precision Instruments and Medical Devices
- Office Automation Equipment (e.g., printers, scanners)
- Light-Duty Power Tools
- Conveyor Idler Rollers
- Ventilation Fans and Blowers
