R1zz
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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R1zz Bearing Product Overview & Core Advantages
The R1zz is a precision miniature ball bearing engineered for demanding applications requiring reliable performance in compact spaces. As a single row radial ball bearing, it is designed to primarily support radial loads with high efficiency. Its construction features shielded protection, preserving internal integrity from contaminants. Manufactured to ABEC1 tolerance standards, this bearing offers excellent value for applications necessitating consistent operation and high rotational accuracy. Its compact dimensions, including a 0.05556" bore and 0.1875" outside diameter, make it an ideal solution for miniaturized assemblies.
R1zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| R1zz | Manufacturer's series designation for a specific miniature bearing line. | Identifies a family of compact, high-performance bearings. |
| Shielded | Fitted with non-contact shields on both sides. | Offers effective protection against dust and debris while maintaining high-speed capability. |
| ABEC1 | Annular Bearing Engineers' Committee precision class 1. | Ensures standardized levels of running accuracy and performance consistency. |
| MC3 | Specified radial internal clearance group. | Optimized for general operating conditions, balancing fit, temperature, and load. |
R1zz Bearing Structural Features & Performance Benefits
This bearing's performance is derived from its robust material selection and precise engineering. The use of chrome steel for both rings and balls provides high hardness and wear resistance, contributing to a dynamic load rating of 44 lbf and extended service life. The stainless steel cage ensures cage integrity and stability at the limiting speed of 90,000 rpm. The 300 series stainless steel shields provide corrosion resistance and protect the internal components, enhancing reliability. The specified radial internal clearance (0.00008" to 0.0005") is critical for managing operational heat and preload, ensuring smooth rotation under load. The compact bearing dimensions (0.1094" width) allow for integration into highly space-constrained designs without sacrificing performance.
R1zz Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in DC motors and stepper motors.
- Medical Devices: Used in surgical hand tools, dental drills, and miniature pumps.
- Office Automation: Critical components in printers, scanners, and small fans.
- Instrumentation: Suitable for encoders, gauges, and other precision measuring devices.
- Robotics: Provides reliable motion in small joints and gearboxes.
