Material
The bearing’s core components—inner ring, outer ring, and rolling elements—are forged from high-quality 52100 chromium steel, ensuring exceptional hardness, wear resistance, and structural integrity to handle sustained high-speed operation. The double shields are crafted from zinc-plated steel, providing sturdy defense against dry contaminants while maintaining compatibility with elevated temperatures.
Characteristics
1. Reliable dust protection: The metal shields form a rigid barrier against dust, lint, and small dry particles, making it ideal for clean workshops, electronics enclosures, and machinery in dry industrial settings.
2. High-speed performance: With minimal friction from the thin metal shields, the bearing operates smoothly at higher rotational speeds compared to rubber-sealed variants, reducing heat buildup during prolonged use.
3. Temperature resilience: The steel shields and steel body withstand higher temperatures (up to 120°C), suitable for equipment with moderate heat generation like small motors or precision spindles.
4. Compact durability: Its small form factor allows easy integration into space-constrained assemblies, while the high-strength steel construction supports consistent load-bearing under light to moderate radial loads.
Applications
1. Small electric motors: Such as high-speed fan motors, miniature drive units in power tools, and spindle motors in small machinery, where rotational efficiency is critical.
2. Precision instruments: Including optical scanners, laser printers, and small-scale measuring devices, benefiting from dust protection and stable high-speed rotation.
3. Office automation equipment: Components like document feeder rollers and high-speed paper transport systems, leveraging its low friction and durability.
4. Hobbyist machinery: Such as 3D printer extruder motors, mini lathe spindles, and RC vehicle transmissions, where dry operating conditions and speed are paramount.
| Part Number | 683ZZ |
| Characteristics |
| System of Measurement | Metric |
| Bearing Type | Ball |
| Seal Type | Shielded |
| Inner Ring Type | Standard |
| For Load Direction | Radial |
| Construction | Single Row |
| Ball Qty | 8 |
| Tolerance Class | ABEC1 |
| Dimensions |
| Bore Dia | 3 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia | 7 mm |
| Outer Dia Tolerance | -0.008mm to 0 |
| Width | 3 mm |
| Width Tolerance | -0.12mm to 0 |
| Ball Dia | 1 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 | 59 lbf |
| Static Radial Load | 20 lbf |
| Max Speed (X1000 rpm) | 63 |
| Temperature Range | -30° to 110 °C |
| Properties |
| Lubrication | Required |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 0.45 g |
