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The 626 deep groove ball bearing is a compact, single-row bearing engineered for balanced radial and light axial load capacity in high-speed applications. It delivers stable, low-vibration performance for precision assemblies and small machinery.
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The 626 Deep Groove Ball Bearing represents the pinnacle of compact rotational engineering, meticulously crafted to deliver uncompromising performance in space-constrained environments. When you handle this bearing, the substantial weight of the premium chrome steel and the flawless, mirror-like finish of the precision-ground raceways immediately communicate industrial-grade durability. During operation, it emits a barely perceptible, smooth hum—a testament to the stringent Z1 and Z2 noise level standards and the perfectly spherical rolling elements gliding effortlessly within the optimized cage. This acoustic signature translates directly to severely reduced vibration in your final product, significantly extending the lifespan of adjacent mechanical components. By integrating this bearing into your assemblies, you eliminate the erratic friction spikes that plague inferior alternatives, ensuring that your motors, guide rollers, and automated systems run with absolute fluid consistency. Furthermore, the refined heat treatment process guarantees that the metal resists fatigue even under relentless continuous operation, safeguarding your production output against unexpected downtime and costly maintenance cycles.
Parameter | Value | Description |
Bearing Model | 626 | Deep Groove Ball Bearing |
Inner Diameter (d) | 6 mm | Shaft diameter |
Outer Diameter (D) | 19 mm | Housing bore diameter |
Width (B) | 6 mm | Bearing width |
Chamfer (r min) | 0.3 mm | Minimum chamfer size |
Item | Specification |
Bearing Type | Single-row deep groove ball bearing |
Precision Grade | ABEC-1 / ABEC-3 / ABEC-5 |
Noise Level | Z1 / Z2 |
Sealing Type | Open / ZZ / 2RS |
Material | Chrome Steel (GCr15) / Stainless Steel |
Cage Material | Steel cage / Nylon cage |
Lubrication | Grease or Oil |
Operating Temperature | -20°C to +120°C |
Load Type | Value |
Dynamic Load Rating (Cr) | Approx. 2.20 kN |
Static Load Rating (Cor) | Approx. 0.95 kN |
Note:Load ratings may vary slightly depending on bearing clearance, material selection, and lubrication conditions.
Bearing Version | Max Speed |
Open Type | ~32,000 RPM |
Metal Shield (ZZ) | ~26,000 RPM |
Rubber Seal (2RS) | ~18,000 RPM |
626 – Open type
626ZZ – Double metal shielded
626-2RS / 626-2RS1 – Double rubber sealed
Our engineering approach focuses on creating a component that actively enhances the operational efficiency of your machinery. Every design choice is geared toward maximizing uptime and minimizing energy loss across your applications.
Optimized Load Distribution: The precise curvature of the inner and outer rings ensures that radial and light axial forces are evenly dispersed, preventing premature localized wear and extending the replacement cycle.
Acoustic Refinement: Manufactured to strict Z1 and Z2 noise classifications, ensuring your end products operate with a premium, whisper-quiet sound profile that end-users associate with high quality.
Thermal Stability: The advanced metallurgical composition allows the bearing to maintain structural integrity and dimensional accuracy across a demanding temperature gradient of -20°C to +120°C without seizing.
Friction Reduction Architecture: The highly polished raceway surfaces drastically lower the coefficient of friction, which translates directly to lower power consumption for your electric motors and automated drives.
To meet the rigorous demands of modern industrial procurement, this bearing series is engineered with versatility and reliability at its core. We tailor every batch to align seamlessly with your specific operational requirements.
We provide core material options including high-carbon chrome steel (GCr15) for maximum hardness and stainless steel for corrosive environments. With precision grades ranging from ABEC-1 to ABEC-5 and clearance options (C0/C2/C3), procurement teams can precisely match the component to their budget and technical constraints.
Designed specifically for compact installations, this component excels in medium to high-speed scenarios. The open variant achieves up to 32,000 RPM, maintaining low vibration and high fatigue resistance to deliver stable radial and light axial load capacities under continuous rotation.
Adapt to any environment with our flexible sealing configurations. Choose from the open type, double metal shields (ZZ), or double rubber seals (2RS). Combined with custom high-speed, low-noise, or high-temperature grease, these barriers effectively lock out dust and moisture, drastically extending operational life.
This component is the ideal high-performance solution for balancing load and speed in tight spaces. It integrates flawlessly into miniature electric motors, gear reduction units, guide rollers, automated conveyor systems, office automation devices, and consumer electronics.
Every unit features precision-machined raceways for fluid rotation. As a direct source factory, we enforce rigorous full-inspection protocols for dimensional tolerances and acoustic levels prior to shipment, ensuring absolute batch consistency and mitigating downstream risks.
We provide comprehensive customization, from laser engraving and specific part number identification to private-label export packaging. Backed by robust production capacity and competitive volume pricing, we serve as a steadfast supply chain partner for long-term projects and continuous manufacturing lines.
Selecting the right manufacturing partner is as critical as selecting the right component. We focus on delivering tangible value that protects your bottom line and elevates your final product quality.
Direct Factory Economics: By eliminating intermediaries, we provide highly competitive pricing structures that significantly improve your profit margins on large-scale orders.
Agile Production Capabilities: Whether you require standard configurations or highly specialized OEM modifications, our manufacturing lines adapt quickly to meet your exact delivery schedules without compromising quality.
Uncompromising Consistency: You can trust that the ten-thousandth bearing will perform exactly like the first. Our automated inspection systems guarantee uniform quality across massive production runs.
Technical Engineering Support: Our team of specialists works directly with your engineering departments to analyze application data and recommend the optimal bearing configuration for your specific machinery.
Secure Global Fulfillment: We utilize robust, export-grade packaging solutions to ensure that your inventory arrives in pristine, factory-fresh condition, ready for immediate assembly line integration.
Below are detailed answers to the most common technical and procurement inquiries regarding this specific bearing model to assist your purchasing decisions.
The ZZ variant utilizes double metal shields, making it ideal for high-speed applications (up to 26,000 RPM) in relatively clean environments where low rotational friction is paramount. The 2RS variant features double rubber contact seals, which limit the speed to approximately 18,000 RPM but provide superior, airtight protection against heavy dust, moisture, and particle ingress, making it perfect for harsh industrial conditions.
Higher ABEC grades indicate tighter dimensional tolerances and better runout accuracy. ABEC-1 is cost-effective for standard applications like basic conveyors. ABEC-3 provides smoother operation for electric motors, while ABEC-5 is reserved for high-precision, high-speed automated equipment where minimal vibration and exact shaft positioning are absolutely critical to the machine's function.
Yes, we offer extensive lubrication customization. Depending on your operational environment, we can fill the bearings with high-speed grease to reduce thermal buildup, low-noise grease for sensitive consumer electronics, or high-temperature grease for machinery operating near heat sources or in demanding thermal gradients.
Radial clearance determines the internal space between the rolling elements and the raceways. C0 is the standard clearance for general use. C2 (tighter) is used where precise positioning is needed and temperatures are perfectly stable. C3 (looser) is essential for applications involving high speeds or significant temperature fluctuations, as it allows for thermal expansion of the metal without causing the bearing to seize.
Absolutely. We provide comprehensive OEM services, including custom laser engraving of your specific part numbers, brand logos, or batch codes directly onto the bearing shields or outer rings. We also offer customized, neutral, or branded export packaging to seamlessly integrate into your inventory management and distribution networks.
