WhatsApp
Teams
Email Us : info@sfyh.com

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

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.

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.

6800 2RS Deep Groove Ball Bearing for Dust-Resistant Applications | 10x19x5 mm

The 6800-2RS is a Premium Deep Groove Ball Bearing engineered for applications requiring enhanced sealing against contaminants and moisture. Featuring double rubber contact seals (2RS) on both sides, this metric bearing provides superior protection against dust, dirt, and light fluid ingress. With a 10mm bore and compact cross-section, it is a reliable choice for electric motors, appliances, pumps, and machinery operating in potentially dirty or damp environments.

6801-2RS Deep Groove Ball Bearing For Compact Electric Motors & Precision Mechanisms | 12×21×5 mm

The 6801-2RS is a Compact and Sealed Deep Groove Ball Bearing designed for applications requiring reliable, maintenance-free operation in challenging environments. Featuring integrated double rubber seals (2RS) on both sides, this bearing provides excellent protection against dust, moisture, and fine contaminants. The effective sealing retains lubricant, minimizes friction, and ensures smooth, long-lasting performance. With its slender 12mm bore and narrow 5mm width, it is an ideal solution for space-constrained designs in small electric motors, gearboxes, and precision instruments.

685-ZZ Miniature Deep Groove Ball Bearing For Small Electric Motors | 5×11×5 Mm

The 685-ZZ is a Compact Double-Shielded Deep Groove Ball Bearing designed for reliable performance in small-scale mechanical applications. Featuring the standard deep groove raceway, this miniature bearing efficiently handles moderate radial loads and light axial loads in both directions. With a 5 mm bore, 11 mm outer diameter, and a square-type 5 mm width profile, it offers a robust yet space-efficient design. Equipped with double metal shields (ZZ) for contamination protection, it is well-suited for small electric motors, light-duty mechanisms, and precision devices requiring smooth operation with minimal maintenance.

686 ZZ Miniature Deep Groove Ball Bearing for Compact Drive Systems | 6×13×5 Mm

The 686-ZZ is a High-Performance Miniature Deep Groove Ball Bearing developed for precision applications demanding reliable operation within a slim profile. Featuring dual metal shields (ZZ) on both sides, this bearing offers advanced protection against airborne particles and debris while ensuring smooth, low-torque rotation. With a 6 mm bore and a compact 5 mm width, it is engineered for small motors, compact fans, and electromechanical devices where space efficiency and contamination resistance are essential.

688 ZZ Miniature Deep Groove Ball Bearing for Small Motors and Compact Mechanisms | 8×16×5 Mm

The 688-ZZ is a Reliable Miniature Deep Groove Ball Bearing designed for applications that require a balance of compact cross-section, contamination protection, and smooth operation. Equipped with double metal shields (ZZ), it offers effective two-side defense against dust and debris while maintaining low rotational torque. With an 8 mm bore and a slim 5 mm width, this bearing is particularly suited for small electric motors, compact fans, and precision mechanisms where radial space is limited and environmental protection is valued.

6806-2RS Sealed Deep Groove Ball Bearing for Compact Mechanisms & Precision Equipment | 30×42×7 Mm

The 6806-2RS is a Double Rubber-Sealed Extra-Light Series Deep Groove Ball Bearing designed for applications where space constraints and contamination protection are critical. Equipped with two rubber contact seals (2RS) on both sides, it efficiently blocks dust, moisture, and debris while maintaining internal lubrication. Featuring a 30 mm bore and a slim 7 mm width, this bearing is ideal for compact assemblies, small precision instruments, and light-duty mechanical systems where reliable sealing and smooth operation are essential.

6804-2RS Sealed Deep Groove Ball Bearing for Slim Profile Applications | 20×32×7 Mm

The 6804-2RS is a Double Rubber-Sealed Extra-Thin Deep Groove Ball Bearing developed for compact assemblies requiring reliable protection against contaminants. Fitted with two rubber contact seals (2RS) on both sides, it effectively blocks dust, moisture, and fine particles while retaining grease for extended service. With a 20 mm bore and a slim 7 mm width, this bearing is especially suitable for applications where radial space is limited and sealing performance cannot be compromised.

6803-2RS Double Rubber-Sealed Deep Groove Ball Bearing for Ultra-Slim Designs | 17×26×5 Mm

The 6803-2RS is a Double Rubber-Sealed, Extra-Thin Series Deep Groove Ball Bearing engineered for applications where minimal axial space and reliable contamination protection are paramount. Featuring two integrated rubber contact seals (2RS), it provides an effective barrier against dust, moisture, and fine particulates while securing internal lubrication. With a compact 17 mm bore and an exceptionally slim 5 mm width, this bearing is the ideal choice for highly space-constrained mechanisms requiring dependable sealed performance.

6802-ZZ Shielded Deep Groove Ball Bearing for High-Speed Compact Designs | 15×24×5 Mm

The 6802-ZZ is a Double Metal-Shielded, Extra-Thin Series Deep Groove Ball Bearing designed for applications requiring high-speed capability and basic contamination protection in a minimal axial space. Equipped with two pressed steel shields (ZZ), it effectively guards against larger dust particles and debris while maintaining low internal friction. With a 15 mm bore and an ultra-slim 5 mm width, this bearing is an optimal choice for precision mechanisms where space is limited and lower torque is preferred over full sealing.

Showing 1 to 1 of 1 (1 Pages)

click here to leave a message
leave a message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.