Material
The bearing’s inner ring, outer ring, and rolling elements are crafted from high-grade 52100 chromium steel, ensuring exceptional hardness, wear resistance, and dimensional stability to handle the rigorous demands of micro-scale rotation. The 2RS seals are made from nitrile rubber (NBR), which offers excellent elasticity, oil resistance, and water tightness, effectively preventing lubricant leakage and blocking external contaminants.
Characteristics
1. Superior moisture and dust protection: The rubber seals form a tight, flexible barrier against water splashes, condensation, and fine particles, making it ideal for devices exposed to occasional dampness or dusty conditions.
2. Low noise operation: The damping property of the rubber seals minimizes vibration and friction-induced noise, crucial for applications like personal electronics or medical tools used in quiet settings.
3. Pre-lubricated for longevity: Factory-filled with high-performance micro-grease, the seals retain lubrication effectively, reducing the need for maintenance in hard-to-access micro-assemblies.
4. Ultra-compact design: With its miniature dimensions, it fits seamlessly into space-constrained equipment such as tiny motors, sensors, and portable devices without compromising performance.
Applications
1. Personal electronics: Including rotating components in wireless earbuds, smartwatch crowns, and 微型 cameras, where protection against sweat or dust is vital.
2. Medical devices: Such as insulin pumps, portable nebulizers, and micro surgical tools, leveraging its moisture resistance and quiet operation.
3. Small household gadgets: Like travel-sized electric shavers, mini humidifiers, and portable coffee grinders, benefiting from its compactness and contamination protection.
4. Precision instruments: Including micro-sensors, tiny actuators in robotics, and fiber optic connectors, where reliable performance in confined, potentially harsh environments is required.
| Part Number | MR83 2RS |
| Characteristics |
| System of Measurement | Metric |
| Bearing Type | Ball |
| Seal Type | Sealed |
| Inner Ring Type | Standard |
| For Load Direction | Radial |
| Construction | Single Row |
| Ball Qty | 7 |
| Tolerance Class | ABEC1 |
| Dimensions |
| Bore Dia | 3 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia | 8 mm |
| Outer Dia Tolerance | -0.008mm to 0 |
| Width | 3 mm |
| Width Tolerance | -0.12mm to 0 |
| Ball Dia | 1.2 mm |
| Radial Clearance | 0.005mm to 0.01 mm |
| Radial Clearance Trade No | MC3 |
| Material |
| Ring Material | Chrome Steel |
| Ball Material | Chrome Steel |
| Cage Material | Carbon Steel |
| Shield Material | Nitrile Rubber |
| Performance |
| Dynamic Radial Load | 76 lbf |
| Static Radial Load | 25 lbf |
| Max Speed (X1000 rpm) | 60 |
| Temperature Range | -30° to 110 °C |
| Properties |
| Lubrication | Required |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 0.51 g |
