Material
The bearing’s inner ring, outer ring, and rolling elements are crafted from high-grade 52100 chromium steel, which offers exceptional hardness, wear resistance, and dimensional stability to handle continuous rotational stress. The double metal shields are made of zinc-plated steel, providing robust protection against dry contaminants while withstanding moderate temperature fluctuations.
Characteristics
1. Effective dust shielding: The rigid ZZ shields form a strong barrier against dust, lint, and small dry particles, ensuring longevity in clean industrial or electronics environments.
2. High-speed capability: The thin metal shields minimize friction, enabling smooth operation at elevated rotational speeds—outperforming rubber-sealed bearings in velocity-demanding scenarios.
3. Temperature tolerance: Withstands temperatures up to 110°C, making it suitable for equipment with moderate heat generation from prolonged use.
4. Compact strength: Its small form factor allows easy integration into space-constrained assemblies, while the steel construction supports reliable performance under light to medium radial loads.
Applications
1. Small electric motors: Such as those in mini fans, portable blowers, and high-speed spindle drives, where rotational efficiency is key.
2. Office machinery: Components like printer rollers, scanner motors, and small gearboxes, benefiting from dust protection and low friction.
3. Precision tools: Including miniature lathes, 3D printer extruders, and hobbyist CNC machines, leveraging its compact design and high-speed stability.
4. Consumer electronics: Like rotating parts in small cameras, portable scanners, and audio equipment, where dry-environment reliability is essential.
| Part Number | 693ZZ |
| 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 | 3 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia | 8 mm |
| Outer Dia Tolerance | -0.008mm to 0 |
| Width | 4 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 | 0.8 g |
