Table of Contents
Product Overview & Specifications
Key Features of Miniature Deep Groove Ball Bearings
Miniature deep groove ball bearings (models 602-639, ZZ/2RS variants) are precision components designed for low-noise, high-speed, and high-load applications. Common in industries requiring compact solutions, these bearings comply with ISO standards and are interchangeable with NSK, NTN, NACHI, and Koyo equivalents.
Technical Parameters Comparison
| Model |
Inner Diameter (mm) |
Outer Diameter (mm) |
Width (mm) |
Seal Type |
Dynamic Load (kN) |
Static Load (kN) |
| 602ZZ |
2 |
6 |
2.3 |
ZZ (Metal Shield) |
0.63 |
0.23 |
| 6352RS |
5 |
19 |
6 |
2RS (Rubber Seal) |
3.2 |
1.4 |
| 639ZZ |
9 |
26 |
8 |
ZZ (Metal Shield) |
5.1 |
2.8 |
Note: ZZ shields provide dust resistance; 2RS seals offer liquid protection. Higher dynamic load ratings suit rotating parts, while static load ratings matter for stationary applications.
Detailed Applications
Core Industries Served
- Consumer Electronics: Spindle motors in HDDs, cooling fans, drone rotors.
- Industrial Automation: Servo motor shafts, conveyor rollers, robotic joints.
- Automotive Systems: Window regulators, fuel pumps, transmission sensors.
- Medical Devices: Dental handpieces, infusion pumps, imaging equipment.
Selection Criteria
- Radial/axial load ratio
- Operating temperature (-30°C to +120°C standard)
- Lubrication type (grease, oil, or dry)
- IP rating requirements
Usage Scenarios by Industry
Scenario 1: High-Speed Dental Handpieces
Model 6232RS used in 400,000 RPM dental turbines, reducing heat generation through ceramic hybrid bearings.
Scenario 2: Agricultural Drones
635ZZ bearings in sprayer pump motors withstand pesticide corrosion and 18-hour continuous operation.
Scenario 3: Automated Packaging Lines
6382RS bearings in label applicators achieve 0.01mm radial runout tolerance for precision positioning.
Real Client Case Studies
Case 1: Automotive Sensor Manufacturer (Germany)
- Challenge: Bearing failures in -40°C EV battery cooling fans.
- Solution: Custom 626LLU with low-temp grease (-60°C rating).
- Result: 18-month lifespan vs. OEM's 6 months.
Case 2: Industrial Robot OEM (Japan)
- Challenge: Vibration in 6-axis arm joints exceeding 5μm.
- Solution: Precision-grade 634ZZ with ABEC-7 tolerance.
- Result: Achieved 1.2μm vibration, enabling micron-level welding.
Contact for Quotation
Why Choose Our Bearings?
- 100% compatibility with NSK/NTN/Koyo parts
- Custom material options: stainless AISI 440C, hybrid ceramic
- 15-day expedited production for urgent orders
Request Pricing & Technical Docs
Email specifications to info@vivalr.com or call (86) 15866781826 for:
- 3D CAD models (STEP/IGES)
- Material certification (MTC)
- RoHS/REACH compliance reports
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