R1-4zz
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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R1-4zz Bearing Product Overview & Core Advantages
The R1-4zz is a precision miniature ball bearing designed for applications requiring compact size and reliable performance. As a single row deep groove ball bearing, it excels at handling radial loads while also accommodating moderate axial loads in both directions. Its inch-series dimensions and ABEC1 tolerance class make it suitable for high-speed operations in precision instruments and small machinery, offering an excellent balance of performance and value in demanding miniature applications.
R1-4zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Advantage |
|---|---|---|
| R1-4 | Bearing series and size designation (Inch series) | Compact design with specific inch dimensions |
| zz | Double shielded (both sides) | Effective contamination protection, extended service life |
R1-4zz Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The deep groove raceway and 7 high-precision chrome steel balls provide excellent radial load capacity (54 lbf dynamic, 17 lbf static) while handling moderate axial loads.
High-Speed Performance: The stainless steel cage ensures stable ball guidance at the limiting speed of 67,000 rpm, making it ideal for high-speed miniature applications.
Precision Engineering: Manufactured to ABEC1 tolerance standards with controlled radial internal clearance (MC3: 0.00008" to 0.0005") for consistent performance and smooth operation.
Enhanced Protection: Double 300 series stainless steel shields protect against contamination while retaining lubrication, though external lubrication is required for optimal performance.
R1-4zz Bearing Typical Application Areas
- Precision instruments and measuring devices
- Small DC motors and miniature gearboxes
- Office automation equipment and computer peripherals
- Medical devices and laboratory equipment
- Robotics and miniature mechanical systems
- Optical instruments and surveillance systems
