MR83zz
MR 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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MR83zz Bearing Product Overview & Core Advantages
The MR83zz is a metric miniature shielded ball bearing designed for precision applications requiring compact dimensions and reliable performance. This single row deep groove ball bearing excels in handling radial loads efficiently while accommodating moderate axial loads in both directions. Its shielded design provides effective contamination protection, making it suitable for applications demanding high reliability and long service life in compact assemblies.
MR83zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| zz | Double-sided steel shields | Provides superior protection against contaminants while retaining lubricant |
| MR83 | Standard metric miniature bearing designation | Indicates compact dimensions (3mm bore × 8mm OD × 3mm width) |
MR83zz Bearing Structural Features & Performance Benefits
Compact Design & High Precision: With dimensions of 3×8×3mm and ABEC1 tolerance class, this bearing delivers precise rotational accuracy in space-constrained applications. The deep groove raceway design ensures optimal load distribution and smooth operation.
Enhanced Durability: Constructed with chrome steel rings and balls combined with a stainless steel cage, the bearing offers excellent wear resistance and mechanical strength. The 300 series stainless steel shields provide corrosion resistance while maintaining dimensional stability.
Optimized Load Capacity: Featuring a radial dynamic load rating of 76 lbf and radial static load rating of 25 lbf, this bearing handles significant radial loads relative to its miniature size. The arrangement of 7 precision balls with 1.2mm diameter ensures balanced load distribution.
Reliable Performance: The MC3 radial internal clearance (0.002mm to 0.013mm) accommodates thermal expansion while maintaining precise operation. With a limiting speed of 60,000 rpm, it supports high-speed applications when properly lubricated.
MR83zz Bearing Typical Application Areas
- Small DC Motors & Stepper Motors: Ideal for spindle support in miniature motors requiring high-speed capability
- Precision Instruments: Suitable for optical encoders, measuring devices, and laboratory equipment
- Office Automation Equipment: Used in printers, scanners, and copiers for precise roller and shaft support
- Medical Devices: Applications in dental handpieces, surgical tools, and diagnostic equipment
- Robotics & Automation: Precision joints and small actuator mechanisms in compact robotic systems
- Consumer Electronics: Cooling fans, small drives, and precision mechanisms in compact devices
