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 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. 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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