Material
The bearing’s core components—inner ring, outer ring, and rolling elements—are fabricated from high-purity 52100 chromium steel, ensuring exceptional hardness, wear resistance, and dimensional stability crucial for micro-operation. The double shields are made of zinc-plated steel, providing robust defense against dust and debris while maintaining compatibility with high-temperature conditions.
Characteristics
1. High-speed capability: The thin metal shields generate minimal friction, enabling smooth operation at elevated rotational speeds, surpassing the performance of rubber-sealed bearings in velocity-demanding scenarios.
2. Dry environment protection: The ZZ shields effectively block dust, lint, and small dry particles, making it ideal for cleanrooms, electronics, and other low-humidity settings.
3. Temperature resilience: Withstands higher temperatures (up to 120°C) compared to rubber seals, suitable for micro-devices with moderate heat generation.
4. Ultra-compact precision: Its tiny dimensions (matching the miniaturized form factor of MR series) allow integration into space-critical assemblies like micro-motors and sensor arrays.
Applications
1. Micro-motors: Such as high-speed spindle motors in miniature drones, vibration motors in precision haptic devices, and tiny actuators in robotic grippers.
2. Optical equipment: Including lens adjustment mechanisms in compact cameras, mirror rotation components in microscopes, and laser alignment systems.
3. Consumer electronics: Like small rotating parts in smartwatch crowns, 微型 fans in VR headsets, and drive mechanisms in portable scanners.
4. Precision instruments: Such as gyroscopes in navigation sensors, tiny pumps in analytical devices, and rotational components in lab-on-a-chip systems.
| Part Number | MR82XZZ |
| Characteristics |
| System of Measurement | Metric |
| Bearing Type | Ball |
| Seal Type | Shielded |
| Inner Ring Type | Standard |
| For Load Direction | Radial |
| Construction | Single Row |
| Ball Qty | 6 |
| Tolerance Class | ABEC1 |
| Dimensions |
| Bore Dia | 2.5 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia | 8 mm |
| Outer Dia Tolerance | -0.008mm to 0 |
| Width | 2.5 mm |
| Width Tolerance | -0.12mm to 0 |
| Ball Dia | 1.588 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 | Carbon Steel |
| Performance |
| Dynamic Radial Load | 107 lbf |
| Static Radial Load | 32 lbf |
| Max Speed (X1000 rpm) | 60 |
| Temperature Range | -30° to 110 °C |
| Properties |
| Lubrication | Required |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 0.52 g |
