Overview & Engineering Structure Deep Groove Ball Bearings are the most widely used roller bearing type in the world, characterized by their uninterrupted, deep raceway grooves. These grooves have a close osculation with the balls, enabling the bearings to accommodate radial loads and moderate axial loads in both directions. Backed by over 15 years of manufacturing expertise, Welink Bearing produces these components with optimized internal geometry to ensure low friction, minimal noise, and reliable high-speed rotation.   Nomenclature & Series Breakdown In international bearing standards, standard metric deep groove ball bearings primarily use the prefix "6". The subsequent digits indicate the dimensional series (width and outer diameter) and bore size. Our comprehensive catalog covers: • The 6000 Family: Including 60, 62, 63, and 64 series, ranging from light-duty space-saving models to extra-heavy-duty configurations. • Thin-Section Series: The 67, 68, and 69 series, engineered for compact, weight-critical applications. • Specialty Series: Including MR (Micro/Miniature), R (Imperial/Inch standard), and MF (Miniature Flanged) series for highly specific mounting requirements.   Key Technical Capabilities • Precision & Clearance: Available in strict ISO 492 P0 to P5 precision grades, with internal clearances (such as standard CN, C3, and motor-specific CM) tailored to manage thermal expansion. • Sealing Options: Offered in Open, ZZ (metal shields), and 2RS/2RZ (rubber seals) variations to protect against industrial contaminants and retain high-quality lubrication.   Primary Application Industries Due to their versatility and low-maintenance design, these bearings are the foundation of modern machinery. They are heavily utilized in electric motors, smart home appliances, motorcycle components, robotics, and general industrial gearboxes.

Overview & Engineering Structure Angular Contact Ball Bearings are specifically engineered to handle complex mechanical forces. Unlike deep groove bearings, their inner and outer ring raceways are displaced relative to each other in the direction of the bearing axis. This asymmetric design creates a specific "contact angle." Because the load is transferred through this angle, these bearings can simultaneously support significant radial loads and high unidirectional axial (thrust) loads. As the contact angle increases, the axial load-carrying capacity also increases.   Nomenclature & Series Breakdown Standard angular contact ball bearings are typically identified by the prefix "7". Welink Bearing manufactures a highly reliable range of these industrial workhorses, categorized by their load and speed optimization: • 70 Series: Slim cross-section models optimized for ultra-high-speed operations with minimal heat generation. • 72 Series: Medium-duty, versatile bearings providing a perfect balance of thrust capacity and radial support. • 73 Series: Heavy-duty, wide cross-section bearings designed to withstand massive shock and combined loads.   Mounting & Technical Features • Contact Angles: Typically available in 15° (for high speed), 25°, and 40° (for high axial load) configurations. • Pairing Capabilities: Frequently used in pairs (Back-to-Back/DB, Face-to-Face/DF, or Tandem/DT arrangements) to accommodate bi-directional axial loads and provide extreme system rigidity. • Cage Materials: Equipped with high-performance cages (such as machined brass, polyamide, or steel) optimized for the specific speed and lubrication conditions of the application.   Primary Application Industries These bearings are critical components where rigid guidance and high thrust capacity are mandatory. They are the standard choice for machine tool spindles, industrial centrifugal pumps, heavy-duty compressors, and high-frequency precision motors.

What is the 60 Series? Engineered by Welink Bearing, the 60 Series Deep Groove Ball Bearing represents our light-duty, space-saving solution. Compared to standard series, it features a smaller cross-section, making it ideal for applications where radial space is limited but reliable performance is required. Key products in this category include popular models ranging from 6000 to 6021. Key Advantages & Features • Space Efficiency: Compact design reduces overall machine weight and footprint. • Precision & Speed: Available in ISO 492 P0 to P5 precision grades, ensuring high-speed stability and minimal vibration. • Optimized Clearance: Features standard CN and C3 internal clearances to accommodate thermal expansion. Application Areas Widely used in electric motors, power tools, smart home appliances, and precision instruments. Solutions Provided If your engineering project faces strict space limitations but cannot compromise on high-speed rotational accuracy, Welink's 60 Series provides the perfect balance of compact dimensions and reliable load capacity.

What is the 62 Series? The 62 Series Deep Groove Ball Bearing is the versatile "workhorse" of the Welink Bearing product line. Designed with medium-duty dimensions, this series accommodates significantly higher radial and axial loads than the 60 series while maintaining excellent high-speed capabilities. Key Advantages & Features • Robust Load Capacity: Thicker inner and outer rings allow for heavier load bearing. • Durability: Manufactured from premium bearing steel for extended fatigue life and low noise. • Versatility: Supports both radial and bi-directional axial loads seamlessly. Application Areas Essential for general machinery, automotive components, agricultural equipment, and industrial gearboxes. Solutions Provided For industrial applications requiring a dependable, all-around bearing that can withstand continuous, medium-to-heavy operational stress, the 62 Series delivers standard-setting durability and reduced maintenance costs.

What is the 63 Series? Manufactured for demanding environments, the Welink Bearing 63 Series Deep Groove Ball Bearing is our heavy-duty solution. It features the largest cross-section among the 60, 62, and 63 series for the same bore size, offering maximum radial load capacity. Key Advantages & Features • Maximum Load Rating: Engineered to handle extreme radial and moderate axial loads. • High Impact Resistance: Thick-walled construction absorbs shocks and operational vibrations. • Precision Engineering: Maintains P0-P5 precision even under heavy mechanical stress. Application Areas Specifically designed for large electric motors, heavy industrial machinery, mining equipment, and robust power transmissions. Solutions Provided When your machinery suffers from frequent bearing failures due to heavy shock loads or extreme radial pressure, the Welink 63 Series provides a heavy-duty structural solution that prevents downtime and extends equipment lifespan.

What is the 64 Series? The 64 Series Deep Groove Ball Bearing from Welink Bearing is our extra-heavy-duty classification. These bearings are structurally reinforced to withstand the most severe industrial applications where maximum load-carrying capacity is the absolute priority over space conservation. Key Advantages & Features • Extreme Load Tolerance: Features the largest ball sizes and ring thicknesses for given bore diameters. • Rugged Construction: Built to resist deformation and fatigue in harsh environments. • Stability: Excellent operational stability under low-to-medium speeds with high mass loads. Application Areas Primarily utilized in heavy construction machinery, oil and gas equipment, steel mill machinery, and large-scale industrial drives. Solutions Provided For extreme engineering challenges where standard heavy-duty bearings fail prematurely under massive stress, the 64 Series offers an uncompromising, highly rigid solution that ensures operational continuity in the harshest conditions.

What is the 67 Series? The Welink Bearing 67 Series is an ultra-thin section Deep Groove Ball Bearing. It is meticulously designed for high-tech applications requiring the absolute minimum cross-sectional area, offering extreme weight reduction and ultra-compact integration. Key Advantages & Features • Ultra-Lightweight: Significantly reduces the total weight of the mechanical assembly. • High Precision: Strict P4-P5 precision manufacturing guarantees smooth, low-friction rotation. • Low Torque: Minimal rotational resistance for highly sensitive instruments. Application Areas Perfect for robotics, UAVs (drones), advanced medical devices, and precision optical instruments. Solutions Provided If you are designing weight-critical aerospace or robotic components where standard bearings are too bulky and heavy, the 67 Series solves the problem by providing smooth rotation in an incredibly tight, lightweight envelope.

What is the 68 Series? The 68 Series Deep Groove Ball Bearing is a thin-section bearing engineered by Welink Bearing to provide an excellent compromise between the ultra-thin 67 series and standard dimensions. It offers better load capacity than the 67 series while still maintaining a highly compact profile. Key Advantages & Features • Space-Saving: Slim profile ideal for miniaturized and compact machine designs. • Smooth Operation: Precision-ground raceways ensure low noise and low vibration. • Versatile Clearance: Available in CN and C3 clearances for optimal thermal management. Application Areas Commonly applied in stepper motors, medical imaging equipment, industrial encoders, and automation systems. Solutions Provided For modern mechanical designs that require downsizing without drastically sacrificing rigidity, the 68 Series provides a reliable solution that fits seamlessly into restricted housings while supporting light-to-medium loads reliably.