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The 686 Deep Groove Ball Bearing is a precision miniature bearing engineered for high-speed, low-noise operation in compact mechanical assemblies. Designed for applications demanding tight tolerances and reliable performance, it offers flexible sealing options and robust load capacity in a small form factor.
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The 686 Deep Groove Ball Bearing represents the pinnacle of micro-engineering, purposefully designed to transform how your compact machinery operates under continuous stress. When integrated into your mechanical assemblies, these bearings deliver a noticeably smoother rotational glide, effectively eliminating the harsh vibrations and microscopic friction that typically degrade motor lifespan and compromise precision. Crafted from premium chrome steel or highly corrosion-resistant stainless steel, the physical construction feels inherently robust, featuring a polished, flawless surface finish that speaks directly to its meticulous grinding and heat-treatment processes. By dramatically minimizing internal rolling resistance, this bearing significantly reduces energy consumption and heat generation, ensuring your end-products run cooler, quieter, and longer. Whether tasked with supporting the rapid, precise spin of a sensitive medical instrument or the relentless, repetitive cycle of an automated conveyor component, the 686 bearing provides an unyielding mechanical foundation. The silent, seamless operation enhances the tactile and acoustic user experience of consumer electronics and office equipment, reflecting the premium quality standards your buyers expect. Upgrading your supply chain with these precision-engineered components translates to fewer maintenance interruptions, lower replacement costs, and a substantial boost in the overall reliability of your manufactured systems.
Parameter | Value | Description |
Bearing Model | 686 | Deep Groove Ball Bearing |
Inner Diameter (d) | 6 mm | Shaft diameter |
Outer Diameter (D) | 13 mm | Housing bore diameter |
Width (B) | 5 mm | Bearing width |
Chamfer (r min) | 0.3 mm | Minimum chamfer size |
Item | Specification |
Bearing Type | Deep Groove Ball Bearing |
Precision Grade | ABEC-3 / ABEC-5 |
Noise Level | Z1 / Z2 (low noise) |
Sealing Type | Open / ZZ / 2RS |
Material | Chrome Steel (GCr15) / Stainless Steel |
Cage Material | Steel / Nylon |
Lubrication | Grease or Oil |
Operating Temperature | -20°C to +120°C |
Load Type | Value |
Dynamic Load Rating (Cr) | Approx. 1.35 kN |
Static Load Rating (Cor) | Approx. 0.55 kN |
Note:Load ratings may vary slightly depending on bearing clearance, material selection, and lubrication conditions.
Bearing Version | Max Speed |
Open Type | ~36,000 RPM |
| Metal Shield (ZZ) | ~30,000 RPM |
| Rubber Seal (2RS) | ~20,000 RPM |
686 – Open type
686ZZ – Double metal shields
686-2RS / 686-2RS1 – Double rubber seals
Engineered for uncompromising performance, our 686 bearings are packed with structural advantages that directly translate into operational superiority for your manufacturing lines. The meticulous internal geometry and premium material selection work in tandem to create a component that thrives under mechanical pressure, ensuring your machinery operates at peak efficiency.
Frictionless Glide Dynamics: Advanced raceway polishing significantly reduces rotational resistance, allowing for near-silent operation and maximizing the energy efficiency of your motorized applications.
Thermal Resiliency: Formulated to withstand extreme temperature fluctuations from -20°C to +120°C, preventing structural deformation and lubrication breakdown in enclosed or high-heat environments.
Adaptive Shielding Technology: Available with precision-stamped metal shields (ZZ) or tight-fitting rubber seals (2RS) that actively repel microscopic dust and moisture, drastically extending the maintenance-free lifecycle of your equipment.
Vibration Dampening Architecture: Engineered strictly to Z1/Z2 noise levels, these bearings absorb micro-shocks, protecting delicate surrounding components in precision instruments from premature fatigue.
Superior Load Distribution: Capable of handling a dynamic load of approximately 1.35 kN, ensuring stable weight distribution and structural integrity even during rapid acceleration or deceleration phases.
Understanding the rigorous demands of modern manufacturing, we have optimized every dimensional and performance aspect of the 686 bearing. From raw material selection to final assembly, these core capabilities are designed to streamline your production protocols and enhance the market value of your final product.
Featuring a standardized 6x13x5mm footprint with a precise 0.3mm minimum chamfer, these bearings undergo rigorous dimensional tolerance control. This strict adherence to ISO and international standards guarantees flawless, drop-in replacement and absolute batch consistency, eliminating alignment issues during large-scale assembly.
Built from high-grade Chrome Steel (GCr15) or specialized Stainless Steel, combined with precision grinding and controlled heat treatments. This advanced metallurgical process results in exceptional surface hardness, superior load-bearing capacity, and unmatched wear resistance over prolonged operational cycles.
Achieving ABEC-3 and ABEC-5 precision grades, coupled with Z1/Z2 low-noise standards, ensures ultra-smooth functionality. The open variant supports blistering speeds up to 36,000 RPM, making it an indispensable asset for high-speed micro-motors and sensitive rotational devices where stability is non-negotiable.
Designed to conquer harsh working environments, the availability of Open, ZZ (metal shields), and 2RS (rubber seals) configurations ensures optimal defense against particulate ingress. This adaptability allows you to lock in critical lubrication while keeping destructive contaminants out, regardless of the operating conditions.
Extensively validated across diverse technical industries, providing reliable kinetic support for power tools, automated conveyor systems, medical laboratory centrifuges, and high-end consumer electronics. This proven track record reduces your engineering risk when integrating our components into new product designs.
We offer profound customization to match your specific engineering blueprints, including adjustable radial clearances (C0/C2/C3), specialized lubricants, and alternative nylon cage materials. Our comprehensive OEM services cover pre-production engineering validation, custom laser engraving, and tailored export packaging solutions.
Sourced directly from our advanced manufacturing facilities, we eliminate intermediary markups to offer highly competitive pricing structures. Our robust production capacity ensures resilient supply chain stability, easily accommodating everything from initial trial runs to massive volume procurement without compromising on lead times.
Selecting the right component partner is a critical strategic decision that impacts your entire production ecosystem. We go beyond merely providing parts; we act as an extension of your engineering and procurement teams, dedicated to elevating your market competitiveness through reliability and innovation.
Unwavering Quality Assurance: Every bearing undergoes multi-stage acoustic, dimensional, and visual inspections before leaving our facility, ensuring that your assembly lines never face downtime due to component failure.
Agile Manufacturing Response: Our streamlined production protocols allow us to adapt rapidly to your fluctuating volume requirements, guaranteeing on-time delivery whether you are scaling up for a product launch or maintaining steady inventory.
Engineering Consultation: Our technical specialists collaborate directly with your design teams, offering expert advice on clearance, lubrication, and sealing choices to perfectly match your specific application environment.
Optimized Total Cost of Ownership: By combining direct-from-manufacturer pricing with extended component lifespans, we help you significantly reduce both initial procurement expenses and long-term warranty or replacement costs.
Global Compliance & Traceability: All manufacturing processes strictly adhere to international environmental and quality standards, providing full traceability and absolute peace of mind for your global export requirements.
To assist your engineering and purchasing departments in making informed, data-driven decisions, we have compiled detailed answers to the most common technical inquiries regarding our 686 deep groove ball bearings.
A: The sealing type directly impacts internal friction and thermal generation. The ZZ type utilizes non-contact metal shields, allowing for high speeds up to 30,000 RPM while providing moderate dust protection. The 2RS type uses rubber seals that make physical contact with the inner ring, providing superior moisture and dust resistance, but this increased friction limits the maximum operational speed to approximately 20,000 RPM.
A: Absolutely. While C0 is the standard clearance for general applications, we highly recommend and can supply C3 radial clearances for high-temperature environments. This extra internal space compensates for the thermal expansion of the metal components, preventing the bearing from seizing and ensuring smooth operation under thermal stress.
A: A nylon (polyamide) cage offers significantly lower weight, excellent elasticity, and superior sliding properties compared to steel. This results in less internal friction, lower heat generation, and noticeably quieter operation, making it highly beneficial for applications demanding rapid acceleration and deceleration, or where noise reduction is a critical design parameter.
A: We utilize fully automated CNC grinding machines integrated with in-line laser measurement systems that monitor tolerances in real-time. Furthermore, our strict statistical process control (SPC) protocols ensure that every single batch, regardless of the order size, strictly adheres to the specified ABEC precision grades without deviation.
A: Yes, our advanced OEM services include custom lubrication filling. We can inject specialized greases, including NSF-certified food-grade lubricants, high-vacuum oils, or extreme-temperature synthetics. We precisely control the fill volume percentage to perfectly match your specific operational demands and industry compliance requirements.
