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Introduction to NKMB 625-ZZ / 625-2RS Mini Ball Bearing
The 625-ZZ Shielded Mini Ball Bearing 5x16x5, also available as NKMB-625-2RS, is a high-performance deep groove mini ball bearing designed for compact equipment requiring smooth rotation, low noise, and long service life. As a trusted manufacturer, NKMB produces the 625 series bearings using premium materials and advanced manufacturing processes to meet the demands of precision applications worldwide.
Whether shielded (ZZ) or sealed (2RS), the NKMB 625 bearing delivers stable and reliable performance in limited installation spaces.
Detailed Parameters of 625 Mini Ball Bearing (NKMB)
| Parameter | Specification |
|---|---|
| Bearing Model | 625-ZZ / 625-2RS |
| Brand | NKMB |
| Bearing Type | Deep Groove Ball Bearing |
| Inner Diameter (ID) | 5 mm |
| Outer Diameter (OD) | 16 mm |
| Width | 5 mm |
| Shield / Seal Type | ZZ (Metal Shields) / 2RS (Rubber Seals) |
| Material | Chrome Steel (GCr15) |
| Ball Material | High-Carbon Steel Balls |
| Cage Material | Steel Cage |
| Lubrication | High-Speed Grease (Pre-lubricated) |
| Precision Grade | ABEC-1 / ABEC-3 (Optional) |
| Radial Clearance | C0 (Standard), C3 Optional |
| Max Speed (Grease) | Approx. 28,000 RPM |
| Operating Temperature | -20°C to +120°C |
| Noise Level | Low Noise |
| Weight | Approx. 4.5 g |
Key Features of NKMB-625-ZZ / 625-2RS Bearings
1. High Precision & Low Friction
NKMB 625 bearings are precision-ground to ensure smooth rotation, low vibration, and excellent dimensional accuracy, making them ideal for high-speed applications.
2. Shielded & Sealed Options
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625-ZZ: Double metal shields protect against dust while supporting higher speeds
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625-2RS: Rubber seals provide superior sealing for humid or contaminated environments
3. Compact Size with Stable Load Capacity
Despite its miniature dimensions, the 625 bearing supports moderate radial loads, ensuring reliable operation in continuous-duty equipment.
4. Long Service Life
Optimized heat treatment and surface finishing give NKMB bearings excellent wear resistance and durability.
Applications of 625-ZZ / 625-2RS Mini Ball Bearing
The NKMB 625 mini ball bearing is widely used in:
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Miniature electric motors
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Cooling fans and blowers
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Office automation equipment
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Robotics and automation systems
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Medical devices
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Fitness equipment
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Small household appliances
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Precision tools and instruments
Why Choose NKMB Mini Ball Bearings?
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Stable and consistent factory quality
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Strict quality inspection standards
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OEM & customized packaging support
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Competitive pricing from direct manufacturer
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Trusted NKMB brand in global markets
NKMB focuses on providing cost-effective, high-quality mini bearing solutions for industrial and precision applications.
Conclusion
The 625-ZZ Shielded Mini Ball Bearing 5x16x5 NKMB-625-2RS offers an excellent balance of precision, durability, and compact design. With detailed technical parameters, low-noise performance, and flexible shield/seal options, it is an ideal choice for modern miniature and automation equipment.
For reliable mini ball bearings, NKMB is a brand you can trust.
