NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
Double row slewing bearings are heavy-duty rotary ring parts with two independent rows of rolling elements (usually steel balls) placed between an inner and outer ring.They safely support heavy axial forces,radial forces,and tilting moment loads all at the same time.
Core Basic Specifications
Materials:Ring forgings adopt 42CrMo & 50Mn alloy steel with full quenching treatment;rolling balls are high-strength GCr15 bearing steel with high surface hardness.Cages include standard carbon steel,high-temperature resistant brass,and lightweight self-lubricating engineering plastic.Size Range:Inner diameter 100-4000mm,outer diameter 150-450mm,overall structural height 50-400mm.Accuracy Grades:P0,P6,P5 industrial precision levels,matching heavy engineering equipment demands.Gear Types:Three standard series available:gearless (020),external gear (021/022),internal gear (023/024) to fit different hydraulic drive layouts.Sealing Solutions:Standard non-contact labyrinth seals for general environments;triple-lip polyurethane contact seals for muddy,dusty,splash-heavy harsh environments.Fluoropolymer seals are optional for special corrosive conditions.Lubrication Modes:Long-service lithium-based grease for routine operation;circulating oil lubrication for continuous high-frequency rotation heavy-load scenarios.Standard operating temperature range:-30℃-120℃,customized low-temperature grease down to -40℃.Delivery Cycle:Standard in-stock models ship within 7-15 working days;heavy-load customized versions require separate lead-time negotiation.
Military & Radar Equipments cover all defense rotary monitoring,early warning and combat devices,including ground air defense radar,shipborne surveillance radar,vehicle-mounted tactical radar,missile launch turrets,armored vehicle gun platforms,coastal defense optical tracking equipment and satellite ground station antenna positioning systems.These military devices run in all-terrain extreme environments:alpine low-temperature zones,coastal salt fog areas,desert sandstorms,and humid rainforest regions.The rotary base of radar antennas and weapon turrets bears continuous wind impact loads,antenna self-weight eccentric moment,and vibration shock generated by vehicle movement or weapon firing.Ordinary single-row slewing bearings are prone to precision loss,raceway corrosion and rotational jitter under long-term alternating shock and all-weather erosion.Once the rotary support fails,radar target tracking deviation and weapon positioning failure will occur,directly affecting defense monitoring accuracy and combat reliability.Therefore,military radar and weapon rotary platforms must adopt double row slewing bearings with ultra-high rigidity,anti-shock performance and full-environment anti-corrosion capability.
Two-Row Configuration:Features upper and lower raceways that distribute localized stress across dual lines of steel balls or rollers.
Same vs.Different Diameters:Available in same-diameter ball setups for simpler layouts or different-diameter ball designs (larger lower balls) to optimize high tipping-moment resistance.
Integrated Gearing:Frequently built with internal or external gear teeth cut directly into one of the rings to drive 360-degree rotation.
Induction-Hardened Raceways:Raceways are deep-quenched (typically HRC 55–62) to maximize surface wear resistance under severe load.
Construction and Lifting Machinery
Tower and Mobile Cranes:Support heavy lifting loads and allow smooth 360-degree rotation.Excavators and Loaders:Manage heavy digging forces and shifting weights during earth-moving work.Concrete Pumps:Handle steady movement and mechanical stress on job sites.
Renewable Energy Systems
Wind Turbines:Used in yaw and pitch systems to turn the massive blades and nacelle toward the wind.Solar Trackers:Help heavy solar panels follow the sun smoothly across the sky.
Marine and Port Equipment
Ship Cranes and Davits:Resist harsh sea conditions and off-center lifting loads.Port Handling Gear:Support loading and unloading heavy cargo containers safely.
Industrial and Specialty Uses
Rotating Tables:Used in factory assembly lines and heavy manufacturing platforms.Medical Systems:Provide stable,precise rotation in large scanning units like CT scanners.
Military & Radar Equipments
Ground/shipboard/vehicle radar rotary pedestals,missile launcher slewing turrets,armored vehicle gun rotary bases,coastal defense optronic tracking platforms,satellite receiving antenna positioning supports all adopt double row slewing bearings as core rotary load-bearing components,realizing shock-resistant,high-precision 360° full-angle rotation under all-terrain military extreme working conditions.
Strong Anti-Shock & Anti-Tilting Capacity Ensures Radar Tracking Accuracy:Large radar antennas bear strong crosswind overturning loads; vehicle and shipborne radar will suffer instant vibration shock during travel.The dual double-row ball structure evenly disperses all composite loads,effectively suppressing turret elastic deformation.It eliminates rotation jitter and angle drift during high-speed target scanning,maintaining micron-level repeated positioning precision and guarantee continuous stable target capture of early warning radar.
Custom Anti-Corrosion & All-Weather Sealing Adapts Global Military Terrains:We provide military-grade surface anti-salt-fog coating matched with triple-lip fluoropolymer sealing double row slewing bearings.The sealing system blocks coastal seawater mist,desert sand and alpine frost,while special low-temperature military grease keeps stable lubrication at -40°C ultra-low temperature,avoiding raceway rust and grease failure in long-term field deployment without frequent maintenance.
Ultra-High Fatigue Life Meets Long-Service Military Standards:42CrMo fully quenched raceway greatly improves impact fatigue resistance,adapting millions of uninterrupted scanning rotation cycles of radar equipment.It meets the 10+ year long service life requirement of military defense facilities,reducing field replacement downtime and hidden dangers of defense system shutdown.
Multiple Gear Forms Match Military Servo Drive Systems:Internal gear,external gear and gearless three series can be customized to match military low-backlash servo reducers and precise angle control drive systems.Military equipment manufacturers do not need to redesign transmission structures,shortening military product R&D and prototype verification cycles.
Low-Vibration Smooth Rotation Avoids Signal Interference:Double-row evenly distributed rolling elements produce ultra-low rotational friction torque and tiny vibration during operation.It prevents mechanical vibration from interfering with radar electromagnetic signals and optical detection sensors,ensuring clear,undistorted monitoring data of defense equipment.
Integrated Compact Structure Reduces Military Equipment Weight:A single double row slewing bearing replaces multiple groups of single bearing combinations,cutting the overall thickness and self-weight of radar turrets and weapon rotary platforms.It lightens vehicle and shipborne defense equipment load,optimizes space layout for military electronic modules.
Newbeetrans is a professional manufacturer specialized in military and radar customized double row slewing bearings.We supply standard stock and military-grade anti-shock,anti-salt-fog customized slewing solutions for defense equipment manufacturers worldwide.
Full Military-Grade Inspection Standard:All inner and outer rings adopt integral forging + deep raceway quenching; every military dedicated bearing passes low-temperature cycle,salt spray aging and impact fatigue strict testing before delivery.
Diversified Military Customization Service:Support 42CrMo anti-corrosion surface treatment,fluoropolymer triple-lip sealing,military wide-temperature special grease,internal/external/gear three gear forms and large non-standard customized models for radar antenna and weapon turret rotary bases.
Stable Fast Delivery:Standard series bearings in stock for shipment within 7–15 days; military customized bearing samples can be finished within 10–15 days based on military drawing technical requirements.
Authoritative Quality Certification:All products comply with national heavy-duty bearing standards,and military environmental test SGS reports can be provided upon customer request.
Global One-stop Technical Support:Complete cross-border global logistics service; professional bearing engineers provide load calculation,sealing and gear selection guidance for all military radar rotary mechanisms.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276