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.
Radiation therapy equipments are core medical devices used for tumor radiotherapy,including linear accelerators (LINAC),tomotherapy systems,gamma knife devices,proton therapy rotary gantries and CBCT image-guided radiotherapy machines.These devices rely on large rotary gantries,rotating treatment heads and multi-axis patient positioning tables to deliver precise directional radiation doses to lesion areas from all angles.The gantry spindles,beam rotation mechanisms and patient platform rotary parts are pre-installed with servo drive systems and deceleration modules before bearing assembly.During clinical treatment,the rotating structures bear heavy self-weight of radiation components,alternating overturning loads and continuous cyclic start-stop movements.Radiotherapy environments impose strict demands on bearings:ultra-low vibration,micro-level rotational positioning accuracy,radiation-resistant lubrication,low particle generation and corrosion resistance.Any bearing jitter or rotation deviation will lead to inaccurate radiation dosage,offset target areas and damage normal human tissues,directly threatening treatment safety.Therefore,bearing rigidity,precision and environmental adaptability are critical to reliable radiotherapy operation.
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 Gantry Rotary Module Assembly:The integrated RU bearing body with reserved PCD mounting holes can be directly bolted to radiotherapy gantry main shafts and rotating treatment heads without extra bearing housings.It can be mounted on pre-assembled motors and reducers without disassembling existing drive components,greatly simplifying the structural design of large radiotherapy rotary frames and shortening equipment assembly and debugging cycles for medical manufacturers.
Bear Heavy Composite Rotary Loads Steadily:A single RU bearing replaces multiple sets of ordinary bearings to simultaneously bear the self-weight of radiation generators,beam devices and dynamic overturning moments generated during 360° gantry rotation.Uniform force distribution avoids spindle deformation under long-term continuous clinical operation,maintaining stable circular motion of radiotherapy gantries and consistent beam center positioning.
Eliminate Vibration to Ensure Radiotherapy Precision Safety:Preloaded high-rigidity structure and ultra-low rotational runout restrain micro-jitter during slow full-angle rotation.Smooth,uniform low-torque rotation maintains sub-micron positioning consistency,preventing beam offset and uneven radiation dose distribution that would harm healthy organs,guaranteeing safe and accurate tumor treatment.
Compact Layout Fits Radiotherapy Cabinet Design:Ultra-thin lightweight profile effectively reduces the overall volume and rotational inertia of large radiotherapy gantries.It optimizes the internal layout of treatment equipment,lowers the load of drive systems,and enables flexible multi-angle non-coplanar irradiation required for advanced radiotherapy techniques.
Adapt Special Radiological Clean Working Conditions:Custom radiation-stable low-outgassing lubricants and SUS440C stainless steel RU bearing options resist long-term ray irradiation and repeated medical disinfection.Sealed structures block dust and particulate pollutants inside treatment rooms,meeting hospital sterile equipment standards and extending bearing service life under continuous radiotherapy cycles.
Cut Hospital Equipment Maintenance Downtime:High-hardened raceways and rollers deliver excellent anti-fatigue and anti-wear performance,supporting all-day uninterrupted clinical radiotherapy operations.Lower bearing failure and replacement frequency reduces equipment shutdown time in oncology departments and improves overall hospital treatment throughput.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for linear accelerators,gamma knife devices,proton therapy gantries and all kinds of radiotherapy precision rotary machinery.
Radiotherapy Equipment Customization:Develop radiation-resistant,low-vibration RU bearings with special anti-radiation medical lubricants and full stainless steel versions on request,customized samples can be delivered within 10-15 days.
Strict Precision Manufacturing:All raceways and rollers adopt super-fine grinding to reach P5,P4 and P2 ultra-precision standards.Every bearing undergoes full dimensional and cleanliness inspection before shipment.
Efficient Global Delivery:Standard RU bearings are in stock for quick shipment,and we provide complete multi-channel global logistics services for overseas 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