Company profile

Since 2010, Fujian Welink Bearing Technology Co., Ltd. has been a globally trusted leader in precision bearings, specializing in miniature deep-groove ball bearings. Our proprietary brand WELINK delivers premium quality and reliable performance rivaling international famous brands, with unbeatable cost-effectiveness that balances top-tier craftsmanship and competitive pricing. With three strategic R&D and production bases across Ningbo (Zhejiang), Ningde (Fujian), and Anhui, plus over 20,000㎡ advanced workshops, we ensure a comprehensive product range, stable supply, and rigorous quality control. Serving 50+ industries worldwide, Our precision bearings are extensively applied in:

All products

6709-ZZ Thin Section Deep Groove Ball Bearing For Electromechanical Systems | 45×55×6 mm

The 6709-ZZ is a precision Thin Section Deep Groove Ball Bearing designed for applications where space is limited and weight reduction is critical. Featuring a double shielded design (ZZ) with pressed steel covers on both sides, it effectively retains grease and excludes light contamination while maintaining minimal rotational torque. With its ultra-slim 45x55x6 mm cross-section, this bearing is engineered for compact mechanical and electromechanical systems .

6710-2RS Thin Section Deep Groove Ball Bearing For Medical Devices & Automation Equipment | 50×62×6 mm

The 6710-2RS is a precision Thin Section Deep Groove Ball Bearing engineered for applications demanding minimal radial space and enhanced protection. Featuring a double contact rubber seal (2RS) on both sides, it provides superior exclusion of moisture, dust, and fine contaminants while retaining lubricant for extended maintenance-free operation. With its ultra-slim 50x62x6 mm cross-section, this bearing is ideal for compact industrial drives, medical devices, and automation equipment .

6710-ZZ Thin-Section Deep Groove Ball Bearing | Precision Space-Saving Solution | 50×62×6 mm

Engineered specifically for restricted-space environments, the 6710-ZZ is an ultra-thin section deep groove ball bearing that delivers uncompromising precision without unnecessary bulk. Equipped with dual non-contact metal shields (ZZ), this bearing effectively blocks particulate contamination while permanently retaining its high-quality factory lubrication. Featuring a large 50mm bore, a 62mm outer diameter, and a remarkably slim 6mm width, it is the ultimate solution for robotics, optical equipment, and industrial automation assemblies where weight reduction and tight radial clearances are critical.

6711-2RS Thin-Section Deep Groove Ball Bearing | Sealed Precision Performance | 55×68×7 mm

The 6711-2RS is a high-performance, extra-light metric bearing designed for applications where radial space is at a premium and environmental protection is a necessity. Featuring contact rubber seals (2RS) on both sides, this thin-section bearing provides a superior barrier against moisture, dust, and fine particulates compared to shielded versions. With a 55mm bore and a slim 7mm width, it offers a perfect balance of large-diameter shaft support and a minimalist mounting footprint, making it indispensable for modern automated machinery.

6711-ZZ High-Velocity Thin-Section Ball Bearing | Friction-Minimized Metric Series | 55×68×7 mm

The 6711-ZZ is a specialized thin-section radial bearing engineered for high-speed rotation where space efficiency is a primary design requirement. Featuring dual non-contact metal shields (ZZ), this bearing provides a robust barrier against dust and debris while maintaining the lowest possible rotational friction. With a 55mm bore diameter and a slim 7mm width, it is the premier choice for large-diameter shafting in robotics, optical instruments, and precision automation where thermal buildup must be kept to a minimum.

MR128-2RS Miniature Deep Groove Ball Bearing | Precision Sealed Micro Bearing | 8×12×3.5 mm

The MR128-2RS is a high-precision miniature ball bearing specifically developed for compact mechanical assemblies where internal clearances are tight and environmental protection is vital. Outfitted with dual contact rubber seals (2RS), this micro-bearing provides a superior barrier against fine dust and moisture while ensuring the internal lubricant remains stable during operation. With an 8mm bore, a 12mm outer diameter, and a slim 3.5mm width, it is the premier choice for RC racing components, small brushless motors, and precision dental tools requiring smooth, dependable rotation.

MR128-ZZ Miniature Deep Groove Ball Bearing | High-Speed Shielded Micro Bearing | 8×12×3.5 mm

The MR128-ZZ is a precision-engineered miniature ball bearing designed for high-velocity mechanical systems where low starting torque and minimal heat generation are essential. Featuring dual non-contact metal shields (ZZ), this micro-bearing provides reliable protection against larger debris while allowing the internal lubricant to operate at maximum efficiency. With an 8mm bore, a 12mm outer diameter, and a 3.5mm width, it serves as a critical high-performance component for cooling fans, high-frequency micro motors, and precision hobbyist electronics.

681-2RS Ultra-Miniature Deep Groove Ball Bearing for Micro-Mechanisms | 1×3×1 mm

Engineered for microscopic applications where space is an absolute premium, the 681-2RS is a highly compact, double rubber-sealed miniature deep groove ball bearing. Boasting a minuscule 1 mm bore and 3 mm outer diameter, this ultra-miniature component delivers exceptional rotational precision in micro-devices. The integration of dual non-removable contact seals (2RS) ensures the internal lubricant is strictly contained while simultaneously blocking microscopic debris, guaranteeing prolonged reliability in highly sensitive micro-electronics and precision instruments.

681-ZZ Ultra-Miniature Shielded Ball Bearing for High-Speed Precision | 1×3×1 mm

The 681-ZZ is a high-precision, dual-shielded miniature deep groove ball bearing designed for microscopic mechanical assemblies where high rotational velocity and low frictional torque are critical. With an incredibly small 1 mm bore and 3 mm outer diameter, this component provides stable support in ultra-compact environments. Featuring two non-contact metal shields (ZZ), it offers excellent protection against larger debris while retaining factory-grade lubrication, making it the premier choice for high-speed micro-motors and sensitive optical devices.

682-2RS Sealed Miniature Ball Bearing for Precision Micro-Assemblies | 2×5×2.3 mm

The 682-2RS is a high-performance, double rubber-sealed miniature deep groove ball bearing specifically designed for applications where rotational accuracy is paramount in a tiny footprint. Featuring a 2 mm bore and a 5 mm outer diameter, this precision component is engineered to deliver reliable support in micro-mechanical systems. Equipped with dual contact rubber seals (2RS), it offers superior protection against environmental contaminants while ensuring the internal lubricant remains sealed for the duration of the bearing's service life.

682-ZZ High-Speed Miniature Ball Bearing with Dual Metal Shields | 2×5×2.3 mm

The 682-ZZ is a precision-engineered, double-shielded miniature deep groove ball bearing designed for high-velocity applications where minimal friction is a critical requirement. With its compact 2 mm bore and 5 mm outer diameter, this bearing provides exceptional rotational stability in micro-scale assemblies. Equipped with two non-contact metal shields (ZZ), it effectively prevents the ingress of larger debris and retains factory-applied grease without the frictional drag associated with contact seals, making it ideal for high-RPM micro-motors.

683-ZZ Miniature Deep Groove Ball Bearing Shielded High-Speed | 3×7×3 mm

The 683-ZZ is a Premium Miniature Single Row Deep Groove Ball Bearing designed for ultra-high-speed rotation and low-friction performance in compact mechanical assemblies. Featuring a double-shielded configuration (ZZ), this micro-bearing effectively locks in pre-filled grease while keeping out dust and microscopic debris. With a highly compact 3mm bore and a 7mm outer diameter, the 683-ZZ delivers exceptional reliability for precision instruments, micro-motors, and advanced robotics where space is strictly limited but performance requirements are high.

684-ZZ Micro Deep Groove Ball Bearing Shielded For 3D Printing & Office Automation | 4×9×4 mm

The 684-ZZ is a Premium Miniature Single Row Deep Groove Ball Bearing engineered for reliable, high-speed rotation in space-constrained mechanical environments. Characterized by its double-shielded design (ZZ), this bearing is expertly sealed with twin metallic shields that lock in essential lubrication while repelling airborne dust and fine particulates. Featuring a versatile 4mm bore and a compact 9mm outer profile, the 684-ZZ is the definitive solution for micro-motors, precision instruments, and automated assemblies demanding superior operational stability without adding excess bulk.

685-2RS Sealed Deep Groove Ball Bearing | High-Precision Miniature Series | 5×11×5 mm

The 685-2RS is a premium-grade miniature deep groove ball bearing designed for applications requiring high rotational speeds, low friction, and reliable protection against environmental contaminants. Equipped with dual-contact rubber seals (2RS), this model ensures superior lubricant retention while preventing the ingress of dust and moisture. With a compact 5mm bore and an 11mm outer diameter, the 685-2RS is the preferred choice for precision instruments, small-scale robotics, and high-tech electronic devices where space is limited but performance is critical.

686-2RS Sealed Deep Groove Ball Bearing | Precision Metric Miniature Series | 6×13×5 mm

The 686-2RS is a high-performance miniature ball bearing engineered for versatility and durability in compact mechanical assemblies. Featuring a 6mm bore and 13mm outer diameter, this model is equipped with dual-contact rubber seals (2RS) that provide an airtight defense against contaminants while locking in premium synthetic lubrication. Designed for engineers and manufacturers who require a balance of low torque and high protection, the 686-2RS excels in environments where precision and maintenance-free operation are paramount.

627-2RS Sealed Deep Groove Ball Bearing for High-Speed Applications | 7×22×7 mm

Engineered to deliver exceptional durability and smooth rotation under demanding conditions, the 627-2RS is a versatile, double rubber-sealed deep groove ball bearing. Featuring a standard 7 mm bore, 22 mm outer diameter, and a 7 mm width, this precision component is widely utilized across both consumer and industrial markets. The addition of bilateral synthetic rubber contact seals (2RS) effectively locks in premium lubricating grease while providing a robust barrier against dust, dirt, and moisture ingress, ensuring long-lasting performance in exposed or harsh environments.

687-2RS Miniature Deep Groove Ball Bearing For High-Speed Miniature Drives | 7×14×5 mm

The 687-2RS is a precision-engineered miniature ball bearing, designed for the most compact and high-speed applications. Its small cross-section, with a 7 mm bore and 5 mm width, makes it an ideal fit for tight installation spaces. Equipped with two non-contact rubber seals (2RS), this bearing offers excellent protection against contamination and ensures long-lasting, maintenance-free operation in devices ranging from dental tools to small RC motors.

687-ZZ Extra Thin Section Ball Bearing | Double Shielded Precision Micro-Bearing | 7×14×5 mm

The 687-ZZ is a highly specialized thin-section miniature bearing engineered for demanding electromechanical systems where radial space is strictly limited but high rotational accuracy is mandatory. Equipped with dual non-contact metal shields (ZZ), this compact component effectively repels particulate contamination while retaining its internal lubrication. Featuring a 7mm bore, a 14mm outer diameter, and a 5mm width, it delivers exceptional operational stability for advanced robotics, high-speed UAV motors, and automated industrial tooling.

Products 01

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Products 02

For on-site generation of sodium hypochlorite and chlorine gas, Klorigen™ is your solution. Klorigen™ generators produce non-pressurized chlorine gas, membrane-grade sodium hydroxide, and 10-15% high strength sodium hypochlorite at point-of-use, using only salt, water, and electricity.

Products 03

For on-site generation of sodium hypochlorite and chlorine gas, Klorigen™ is your solution. Klorigen™ generators produce non-pressurized chlorine gas, membrane-grade sodium hydroxide, and 10-15% high strength sodium hypochlorite at point-of-use, using only salt, water, and electricity.

Products 04

For on-site generation of sodium hypochlorite and chlorine gas, Klorigen™ is your solution. Klorigen™ generators produce non-pressurized chlorine gas, membrane-grade sodium hydroxide, and 10-15% high strength sodium hypochlorite at point-of-use, using only salt, water, and electricity.

Deep Groove Ball Bearing 606 Z

The 606 Z is a high-precision, single-row deep groove ball bearing fitted with a single-side steel shield (Z). As part of the miniature bearing series, it is engineered for compact, high-speed applications where reliable performance and space-saving design are critical.

Deep Groove Ball Bearing 608 Z

The 608 Z is a versatile and widely used single-row deep groove ball bearing fitted with a single-side steel shield (Z). As a standard-size bearing in the extra light 60 series, it offers an excellent balance of compact design, high-speed capability, and reliable performance for a vast range of industrial and consumer applications.

626 Z Deep Groove Ball Bearing For Power Tools | 6x19x6 mm

The 626 Z is a Premium Miniature Deep Groove Ball Bearing engineered for high-speed precision applications. Featuring a single metal shield (Z), this metric bearing balances protection against debris with low-friction performance. With a 6mm bore, it is ideal for small motors, power tools, and precision instrumentation requiring a compact footprint.

Deep Groove Ball Bearing 629 RS

The 629 RS is a highly versatile, single-row deep groove ball bearing fitted with rubber contact seals on both sides (2RS). As part of the widely utilised light 62 series, it delivers an optimal blend of reliable sealing, good load capacity, and smooth operation, making it the preferred choice for applications requiring effective protection against dust and moisture.

Deep Groove Ball Bearing 6001 RS

The 6001 RS is a reliable and commonly specified single-row deep groove ball bearing fitted with a rubber contact seal on one side (RS). As a standard component of the extra light 60 series, it delivers an effective combination of one-sided sealing protection, high-speed capability, and a compact, lightweight design for a broad array of industrial and mechanical applications.

Deep Groove Ball Bearing 6005 RS

The 6005 RS is a robust and versatile single-row deep groove ball bearing fitted with rubber contact seals on both sides (2RS). As a dependable member of the extra light 60 series, it offers an excellent combination of effective sealing for contaminant exclusion, substantial load capacity, and smooth operation, making it a prime choice for applications in demanding or dirty environments.

Deep Groove Ball Bearing 6005 ZZ

The 6005 ZZ is a robust and widely used single-row deep groove ball bearing fitted with steel shields on both sides (ZZ). As a key member of the extra light 60 series, it offers a reliable and cost-effective solution for applications requiring effective protection against dust and coarse contaminants while maintaining high-speed capability and good load capacity.

Deep Groove Ball Bearing 6200 RZ

The 6200 RZ is a highly efficient, single-row deep groove ball bearing fitted with a low-friction rubber seal on one side (RZ). As a key member of the versatile light 62 series, it provides an optimal balance between effective contaminant protection and minimal rotational friction, making it an ideal choice for applications demanding high efficiency, reduced energy consumption, and extended service life.

Deep Groove Ball Bearing 6201

The 6201 is a fundamental and robust single-row deep groove ball bearing in open design. As a cornerstone component of the widely used light 62 series, it provides a high-load-capacity and versatile solution, offering maximum design flexibility for custom lubrication and sealing arrangements in a wide array of industrial applications.

Deep Groove Ball Bearing 6203 DDU

The 6203 DDU is a robust and maintenance-friendly single-row deep groove ball bearing, fitted with double lip contact seals on both sides (DDU). As a high-performance variant within the widely specified light 62 series, it delivers exceptional sealing integrity and reliable operation under load, making it an ideal choice for applications demanding long-term, maintenance-free performance in challenging environments.

Deep Groove Ball Bearing 6204 RS

The 6204 RS is a robust and versatile single-row deep groove ball bearing fitted with a rubber contact seal on one side (RS). As a standard and reliable component of the light 62 series, it offers an excellent combination of effective one-sided sealing, high load capacity, and smooth operation, making it a preferred choice for applications where targeted protection against contaminants is required.

6205

The 6205 is a fundamental, high-capacity single-row deep groove ball bearing in open design. As a cornerstone of the versatile light 62 series, it provides an optimal balance of substantial load capacity, high-speed capability, and maximum design flexibility, serving as the ideal base for customised lubrication and sealing solutions across countless industrial applications.

626 Z

The 626 Z is a Premium Miniature Deep Groove Ball Bearing engineered for high-speed precision applications. Featuring a single metal shield (Z), this metric bearing balances protection against debris with low-friction performance. With a 6mm bore, it is ideal for small motors, power tools, and precision instrumentation requiring a compact footprint.

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