RW188
RW Series Extended Inner Ring Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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RW188 Bearing Product Overview & Core Advantages
The RW188 is a single row deep groove ball bearing designed for high-performance applications requiring reliable radial load capacity. Manufactured to ABEC1 precision standards, this inch-series bearing features an extended inner ring for simplified axial location and secure mounting. Its optimized internal geometry and high-quality chrome steel construction deliver smooth operation and long service life across a wide temperature range from -86 to 230 °F.
RW188 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Significance |
|---|---|
| RW188 | Standard inch-series bearing designation |
| Open | No seals or shields, requiring external lubrication |
| Extended Inner Ring | Provides mounting shoulder for precise axial positioning |
| MC3 Clearance | Standard radial internal clearance (0.00008" to 0.0005") |
RW188 Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: Features 8 precision-ground chrome steel balls with a diameter of 0.0787" arranged in a single row deep groove raceway, providing excellent radial load capacity (207 lbf dynamic / 80 lbf static) and smooth rotational characteristics.
Precision Construction: The stainless steel cage ensures proper ball spacing and guidance, contributing to stable operation at limiting speeds up to 40,000 rpm. The extended inner ring design enhances mounting stability and facilitates precise axial location in assembly.
Material Excellence: Manufactured from high-grade chrome steel for both rings and balls, delivering superior hardness, wear resistance, and dimensional stability. The MC3 radial clearance provides optimal internal fit for most industrial applications.
RW188 Bearing Typical Application Areas
- Precision instruments and measuring devices
- Small electric motors and miniature gearboxes
- Medical equipment components and dental handpieces
- Office automation equipment and computer peripherals
- Robotic components and automation systems
- Aerospace instrumentation and control systems
