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.
Aerospace simulation test equipments are core high-precision testing facilities widely used in aerospace R&D,verification and reliability assessment,covering flight motion simulators,satellite attitude simulation turntables,wind tunnel rotary test mechanisms,spacecraft vibration test platforms,space environment simulation chambers and inertial navigation calibration systems.These devices simulate the real motion states of aircraft,satellites and aerospace components through multi-axis high-precision rotary platforms,to complete performance testing,life verification and environmental adaptability evaluation.The three-axis simulation turntables,attitude adjustment spindles and rotary test benches of these equipments are usually pre-assembled with high-precision servo motors and precision reducers before bearing installation.During long-cycle testing,rotary components operate continuously with frequent start-stop,indexing and swing motions,bearing alternating dynamic loads including radial force,axial pressure and overturning moment,and need to adapt to harsh test conditions such as high and low temperature,vacuum and low vibration.Aerospace simulation test equipments put extremely strict requirements on supporting bearings:nanoscale rotational accuracy,ultra-high rigidity against deformation,extremely low friction torque fluctuation,long-term precision retention and excellent environmental adaptability.Any slight bearing runout or deformation will cause simulation data distortion and invalid test results,which directly affects the R&D accuracy and flight reliability of aerospace products.
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 Assembly & Calibration of High-Precision Simulation Turntables:The integrated RU bearing body with prefabricated mounting holes can be directly bolted to the structural parts of aerospace simulation turntables and test platforms.It can be installed on pre-assembled spindles with servo motors and precision reducers without dismounting existing transmission components,greatly shortening the assembly cycle of test equipment and reducing the cost of precision calibration and debugging.
Withstand Complex Composite Test Loads A single:RU bearing replaces multiple sets of traditional bearings to synchronously bear radial supporting force,axial test pressure and continuous overturning moment during vibration and impact tests.The reasonable force distribution avoids micro-deformation of the spindle under long-term alternating load conditions,maintaining the structural stability of the test platform and consistent motion track during full-cycle simulation.
Guarantee Ultra-High Accuracy of Simulation Test Data:The preloaded ultra-high rigidity structure and ultra-low rotational runout effectively suppress micro-jitter during low-speed attitude simulation and high-frequency indexing motion.Stable low-friction torque eliminates test noise and data drift caused by tiny shaking,ensuring highly realistic flight attitude simulation and reliable inertial navigation calibration data.
Adapt to Compact Test Equipment Layout:The ultra-thin and lightweight cross-section reduces the overall volume and rotational inertia of simulation turntables and test rotating mechanisms,improving the dynamic response speed of multi-axis motion simulation,which is especially suitable for test devices installed in limited spaces such as vacuum chambers and environmental test chambers.
Adapt to Special Aerospace Test Environments Custom:SUS440C stainless steel RU bearings,vacuum-grade low-outgassing lubricants and enhanced sealing options can be selected to adapt to special test environments including high and low temperature,vacuum and clean rooms,preventing particle shedding and lubricant volatilization from polluting the precision test environment.
Reduce Long-Term Calibration & Maintenance Costs:High-hardened raceways and rollers deliver excellent fatigue and wear resistance,maintaining original precision after millions of test cycles.Stable long-term performance reduces regular equipment calibration times and unplanned downtime for maintenance,improving the continuous operation efficiency of aerospace test laboratories.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for aerospace simulation turntables,attitude test platforms,wind tunnel rotary mechanisms and various high-precision aerospace testing equipment.
Aerospace-Oriented Customization:We develop zero-backlash,high-rigidity RU bearings equipped with low-outgassing vacuum-grade lubricants,full stainless steel versions and enhanced sealing structures for extreme temperature environments on request; 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 product undergoes full dimensional inspection and runout testing to guarantee reliable quality.
Efficient Global Delivery:Standard RU bearings are in stock for quick shipment,and we provide complete multi-channel global logistics services for worldwide aerospace 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