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.
Surgical robots and rehabilitation devices are core precision medical devices widely used in minimally invasive surgery,orthopedic rehabilitation,neurological recovery and physical therapy fields.Surgical robots consist of multi-degree-of-freedom mechanical arms,tiny surgical end effectors and precision rotating joints,which perform ultra-fine cutting,suturing and lesion removal under real-time imaging guidance.Rehabilitation equipments include joint training robots,limb traction devices,rehabilitation rotary tables and motion correction platforms,which deliver adjustable repetitive movement training for patients with joint injuries,stroke and spinal lesions.All rotary joints and swing spindles of such medical devices are pre-assembled with miniature servo motors and micro reducers.During long-term clinical use,the rotating parts continuously bear alternating overturning moments,the self-weight of mechanical arms and variable patient load.Medical environments impose extremely strict standards on bearing precision,vibration control,cleanliness and corrosion resistance.Micro vibration,rotation deviation or metal particle shedding will directly affect surgical safety and rehabilitation training accuracy.Therefore,the performance of rotary bearings determines the stability,safety and service life of the whole medical equipment system.
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 Compact Medical Equipment Assembly:The integral RU bearing body with prefabricated PCD mounting holes can be directly bolted to miniature robot joints and rehabilitation swing spindles.It can be mounted on pre-installed micro motors and reducers without disassembling existing drive components,greatly simplifying the compact structural design of medical arms and reducing assembly and after-sales maintenance costs for medical equipment manufacturers.
Stably Bear Variable Medical Composite Loads:A single RU bearing replaces multiple sets of ordinary bearings to simultaneously bear the weight of surgical instruments,arm self-weight and dynamic overturning moment generated during patient limb training.Even load distribution avoids tiny structural deformation during long-hour continuous clinical operation,keeping stable movement of surgical arms and rehabilitation platforms.
Eliminate Micro-Vibration to Ensure Medical Safety:Ultra-low rotational runout and preloaded rigid structure effectively restrain micro-jitter during slow precise rotation.Smooth and consistent rotational torque delivers sub-micron positioning accuracy,preventing surgical operation offset and abnormal shaking during rehabilitation training,fully protecting patient safety and improving treatment effects.
Fit Miniaturized Medical Structural Layout:Ultra-thin,lightweight profile greatly reduces the volume and weight of robot joints and rehabilitation rotary modules,lowering motion inertia of mechanical arms.It enables flexible multi-angle rotation of minimally invasive surgical arms and smooth adjustable movement of rehabilitation training equipment.
Adapt Clean & Disinfectable Medical Environments:Custom SUS440 stainless steel RU bearings and medical-grade low-particle lubricants are available,resisting repeated wiping by disinfectant liquids and generating almost no metal debris.Sealed versions block dust and contaminants,meeting hospital clean room and sterile operation standards.
Extend Equipment Service Life & Cut Clinical Downtime:High-hardened raceways and rollers provide excellent anti-fatigue and wear resistance,supporting 24-hour daily continuous clinical use.Lower bearing replacement frequency reduces equipment shutdown time in hospitals and rehabilitation centers,improving overall medical service efficiency.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for surgical robots,rehabilitation equipments and all types of precision medical rotary machinery.
Medical Customization:Develop low-vibration,low-particle,corrosion-resistant RU bearings with medical special 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 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