MR63 2rs
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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MR63 2rs Bearing Product Overview & Core Advantages
The MR63 2RS is a miniature deep groove ball bearing designed for applications requiring compact dimensions and reliable performance. As a single row, sealed metric bearing, it excels in handling radial loads effectively while offering protection from contamination. Its small footprint (3mm bore, 6mm OD, 2.5mm width) makes it ideal for space-constrained, high-precision assemblies. The integrated 2RS seals ensure long-term performance by retaining lubrication and excluding pollutants, contributing to its high reliability in demanding miniature applications.
MR63 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| MR63 | Basic bearing designation | Defines the core dimensions: 3mm bore, 6mm OD, 2.5mm width |
| 2RS | Double Contact Seals (Nitrile Rubber) | Provides excellent protection against contaminants and retains lubricant effectively |
MR63 2rs Bearing Structural Features & Performance Benefits
Optimized Miniature Design: The single row construction with 8 precision chrome steel balls ensures smooth operation and efficient radial load capacity within minimal space.
Enhanced Sealing & Protection: The 2RS double-contact nitrile rubber seals provide superior barrier protection, making the bearing suitable for environments where dust or small particles are present.
Precision & Speed: Manufactured to ABEC1 tolerance class with a stainless steel cage, the bearing offers reliable performance at limiting speeds up to 71,000 rpm.
Internal Clearance & Rigidity: With a MC3 radial internal clearance (0.002mm to 0.013mm), the bearing accommodates thermal expansion while maintaining operational stability.
MR63 2rs Bearing Typical Application Areas
The MR63 2RS is widely used in precision instruments and compact mechanisms, including:
- Small DC Motors & Gearboxes
- Precision Medical Devices (e.g., surgical hand tools, dental equipment)
- Office Automation Equipment (printers, scanners)
- Miniature Robotics & Drones
- Instrumentation & Measurement Devices
