MR93 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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MR93 2rs Bearing Product Overview & Core Advantages
The MR93 2RS is a metric single row deep groove ball bearing designed for exceptional performance in compact applications. This sealed bearing features robust construction with chrome steel rings and balls, delivering reliable radial load capacity and smooth operation. Its compact dimensions (3mm bore, 9mm OD, 4mm width) make it ideal for space-constrained designs requiring high precision and durability. Pre-lubricated and sealed for life, it offers maintenance-free operation across a wide temperature range.
MR93 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| MR93 | Basic bearing designation indicating metric series with 3mm bore diameter | Standardized sizing for easy replacement and integration |
| 2RS | Double rubber seals on both sides | Superior contamination protection and lubricant retention |
MR93 2rs Bearing Structural Features & Performance Benefits
Optimized Deep Groove Design: The single row deep groove raceway provides excellent radial load capacity while accommodating moderate axial loads in both directions, making it versatile for various applications.
Enhanced Sealing System: The double rubber seals (2RS) effectively exclude contaminants while retaining lubrication, ensuring long service life and maintenance-free operation in demanding environments.
Precision Engineering: Manufactured to ABEC1 tolerance class with MC3 radial clearance (0.002mm to 0.013mm), this bearing delivers consistent performance and smooth rotation characteristics.
High-Speed Capability: With a limiting speed of 56,000 rpm and stainless steel cage, the bearing maintains stability and reliability at high rotational speeds.
MR93 2rs Bearing Typical Application Areas
- Small Precision Motors: Ideal for miniature DC motors, stepper motors, and servo motors requiring compact dimensions and reliable performance
- Medical Devices: Suitable for surgical tools, dental handpieces, and diagnostic equipment where precision and contamination control are critical
- Office Automation: Perfect for printers, scanners, and copiers requiring quiet operation and long service life
- Instrumentation: Used in precision measuring instruments, optical devices, and laboratory equipment demanding high accuracy
- Robotics & Automation: Applied in small robotic joints, linear guides, and positioning systems requiring compact bearing solutions
