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.
Precision RU Crossed Roller Bearings are compact,high-rigidity rotational bearings featuring cylindrical rollers arranged at 90° angles in a V-groove.Unlike traditional bearings,their unique cross-pattern allows a single bearing to simultaneously handle complex multi-directional loads-including radial,axial,and moment (tilting) forces.These bearings are available in P5,P4 and P2 precision grades.The inner diameter ranges from 10mm to 350mm,the outer diameter from 52mm to 540mm,and the cross-section height varies between 8mm and 45mm.The mounting holes support specifications from M3 to M12.For materials,bearing rings and rollers are made of GCr15 high-carbon chromium steel with a surface hardness of HRC 60-62,or corrosion-resistant SUS440C stainless steel.Nylon 66 or high-strength brass is selected as the cage material.Two main sealing types are provided:open type for clean working environments and U/UU contact rubber seal for dust and splash resistance.In terms of lubrication,both standard grease lubrication and circulating oil lubrication for heavy-duty use are available.Standard RU models can be delivered within 7-15 days,while customized products will be scheduled according to specific technical requirements.
Astronomical telescopes and high-precision optical lens systems are core observation devices for astronomical research,aerospace remote sensing,optical measurement and spectral analysis.Astronomical telescopes include ground-based observation telescopes,space optical telescopes and equatorial tracking mounts,which rely large rotating azimuth and altitude frames to continuously track celestial bodies for long-time exposure imaging.Optical lens assemblies cover laser focusing modules,spectral analyzers,optical measuring turntables and high-resolution camera rotary lens holders,requiring micro-angle precise rotation for light path calibration and target scanning.All tracking gantries,lens swing spindles and rotary positioning platforms are pre-installed with servo drive units and decelerators before bearing assembly.During long-duration observation,rotating components bear the heavy self-weight of large objective lenses,alternating overturning moments and slow continuous cyclic rotation.Optical and astronomical equipment imposes ultra-stringent standards on bearings:nanoscale rotational stability,ultra-low micro-vibration,minimal particle shedding,low thermal expansion and resistance to temperature fluctuations.Any tiny jitter or rotation deviation will cause blurred astronomical images,light path offset and measurement errors,so bearing rigidity,precision and environmental adaptability directly determine observation accuracy.
Multi-Directional Load Capacity:Because the cylindrical rollers are alternately crossed at right angles,a single bearing can support radial,axial,and tilting moment loads at the same time.
Integrated Mounting Design:Unlike traditional bearings,RU series inner and outer rings are fully integrated.They include pre-drilled mounting holes,eliminating the need for a separate presser flange or fixing housing.High Rigidity and Accuracy:Bearings are preloaded,minimizing elastic deformation under heavy loads and ensuring high running accuracy (often up to P5,P4,or P2 grades).
Space and Weight Efficiency:By consolidating multiple bearings into a single compact unit,equipment size and weight can be significantly reduced.
Stable Rotational Torque:Equipped with spacer retainers between the rollers,they offer a low friction coefficient,resulting in highly stable,smooth rotational torque.
Industrial Robotics:Found in basic motion parts such as robot waists,elbows,and rotary joints.Their rigidity allows them to support heavy moment loads at high speeds.
Precision Machine Tools:Utilized in rotary tables,index heads,and spindles for CNC machines and machining centers.
Semiconductor Fabrication:Provide the micron-scale accuracy required for wafer transfer robot arms,photolithography machines,and precise rotary indexing.
Medical & Lab Equipment:Built into rotating parts of advanced diagnostic tools like CT scanners,MRI machines,and robotic surgery components.
Optical & Measuring Instruments:Employed in high-precision astronomical telescopes,CMM (Coordinate Measuring Machines) rotary tables,and laser measuring devices.
Simplify Optical Equipment Modular Assembly:The integrated RU bearing body with prefabricated PCD mounting holes can be directly bolted to telescope equatorial mounts and optical lens rotary brackets without extra bearing seats or auxiliary flanges.It can be installed on pre-assembled servo and reducer spindles without dismounting existing drive components,greatly simplifying the ultra-compact structural design of optical instruments and shortening equipment assembly and optical debugging cycles.
Stably Bear Large Optical Component Composite Loads:A single RU bearing replaces multiple groups of ordinary bearings to simultaneously bear the weight of large objective lenses,radial support force and long-term tracking overturning moment.Even load distribution avoids spindle bending deformation under hours of continuous astronomical observation,maintaining stable circular motion of tracking frames and consistent light path alignment of lens groups.
Eliminate Micro-Jitter to Guarantee Ultra-Clear Imaging:Preloaded high-rigidity structure and ultra-low rotational runout restrain micro-vibration during slow-angle tracking rotation.Constant smooth low-torque rotation eliminates image trailing and star point distortion caused by tiny shaking,realizing long-exposure high-definition astronomical photography and high-precision spectral measurement.
Fit Miniaturized Optical Equipment Layout:Ultra-thin lightweight cross-section reduces the overall volume and self-weight of telescope tracking frames and lens adjustment mechanisms,lowering rotation inertia and improving celestial target tracking response speed,which is critical for compact portable observation telescopes and space-borne optical devices.
Adapt Wide Temperature & Dust-Free Optical Working Conditions:Custom low-outgassing,temperature-stable special lubricants and SUS440C stainless steel RU bearing options can adapt outdoor observatory large temperature differences and indoor dust-free optical laboratories.Sealed variants block fine dust to prevent lens surface contamination,meeting long-term stable optical observation demands.
Extend Service Life & Cut Observation Equipment Maintenance:High-hardened raceways and rollers deliver outstanding anti-fatigue and low-wear performance,supporting days of uninterrupted astronomical tracking operation.Low failure frequency reduces telescope downtime and regular bearing replacement costs for observatories and optical laboratories.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for astronomical telescope tracking mounts,optical lens rotary stages and all kinds of high-precision optical measuring equipment.
Optical & Astronomical Customization:Develop low-vibration,low-particle RU bearings with temperature-resistant clean lubricants and full stainless steel versions as requested; customized samples can be delivered within 10-15 days.
Strict Precision Manufacturing:All raceways and rollers adopt super-fine grinding to meet P5,P4 and P2 ultra-precision standards.Every bearing undergoes full dimensional and low-vibration inspection before delivery.
Efficient Global Delivery:Standard RU bearings are in stock for quick shipment,and we provide complete multi-channel global logistics services for worldwide clients.
Authoritative Quality Certification:Our products comply with ISO 9001 and GB/T 307.1 standards,and official SGS inspection reports can be provided upon request.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276