Material
It is forged from high-grade SUJ2 chromium steel, a material renowned for its exceptional purity and uniform grain structure. Through precise heat treatment, the steel achieves optimal hardness (HRC 60-65) and enhanced fatigue resistance, enabling the bearing to withstand continuous rotational stress without premature wear or deformation.
Features
• Double metal shields ("ZZ"): These sturdy shields create a tight seal against dust, lint, and small particles, preserving internal lubrication and reducing maintenance needs, even in dusty environments.
• Ultra-precise rotation: With tight dimensional tolerances (ISO Class 5), it minimizes radial and axial runout, ensuring stable performance in high-precision motion systems.
• Low-noise operation: The polished raceways and optimized ball-to-race contact reduce friction and vibration, making it ideal for noise-sensitive devices.
• Space-efficient design: Its miniature size (outer diameter under 10mm) fits seamlessly into compact assemblies without sacrificing load capacity for its class.
Applications
• Wearable tech: Integrated into smartwatch rotors and fitness tracker motion sensors for smooth, consistent movement.
• Micro-robotics: Used in small robotic joints and actuator mechanisms requiring precise motion control.
• Medical microsystems: Employed in insulin pump motors and tiny surgical tool components where reliability is critical.
• Audio equipment: Found in mini headphone drivers and portable speaker rotational parts to maintain sound quality through stable operation.
| Part Number | MR62ZZ |
| 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 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia | 6 mm |
| Outer Dia Tolerance | -0.008mm to 0 |
| Width | 2.5 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 | Carbon Steel |
| Performance |
| Dynamic Radial Load | 63 lbf |
| Static Radial Load | 18 lbf |
| Max Speed (X1000 rpm) | 75 |
| Temperature Range | -30° to 110 °C |
| Properties |
| Lubrication | Required |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 0.33 g |
