MR83
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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MR83 Bearing Product Overview & Core Advantages
The MR83 is a metric single row deep groove ball bearing engineered for compact applications requiring reliable radial load support. Featuring a minimal cross-section with a 3mm bore and 8mm outside diameter, this bearing delivers high precision performance within ABEC1 tolerance standards. Its open design allows for versatile lubrication options while maintaining excellent operational stability across a temperature range of -30° to 110°C. The combination of chrome steel rings and stainless steel cage ensures durability and corrosion resistance in demanding environments.
Model Code Technical Breakdown
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| MR83 | Standard metric series designation | Indicates compact radial bearing configuration |
| Open | No seals or shields | Enables custom lubrication and high-speed operation |
| MC3 | Radial internal clearance group | Optimized for normal operating conditions and temperature variations |
MR83 Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The raceway design enables efficient radial load distribution while accommodating moderate axial loads in both directions, making it suitable for various mounting configurations.
Precision Engineering: Manufactured to ABEC1 tolerance class with bore and outside diameter tolerances of -0.008mm to 0, ensuring consistent performance and easy installation in precision assemblies.
High-Speed Capability: The stainless steel cage and optimized 7-ball configuration with 1.2mm diameter balls contribute to stable operation at limiting speeds up to 60,000 rpm.
Material Excellence: Chrome steel rings and balls provide high hardness and wear resistance, while the stainless steel cage offers excellent corrosion resistance and cage stability.
MR83 Bearing Typical Application Areas
- Small precision motors and miniature DC motors
- Medical devices and dental handpieces
- Office automation equipment including printers and scanners
- Instrumentation and measuring devices
- Robotics and small automation components
- Consumer electronics requiring compact bearing solutions
