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.
Wafer handling robots and transfer modules are core automated equipment indispensable to the semiconductor and optoelectronic manufacturing industries.They mainly undertake the picking,transporting,positioning and temporary storage of silicon wafers,glass substrates and other ultra-precision components throughout production lines such as wafer fabrication,lithography,etching and testing.Most of these devices work in ultra-clean vacuum workshops,and their rotary joints,rotating arms and indexing platforms are pre-assembled with gears and servo drive components.During continuous high-frequency operation,the rotary parts bear frequent start-stop movements,alternating overturning moments and the self-weight of mechanical arms and wafers.Meanwhile,the ultra-clean production environment imposes extremely strict requirements on particle generation,rotational runout and structural stability of supporting bearings.Any tiny vibration,positioning deviation or foreign particle pollution will lead to wafer scratches,circuit damage and massive product scrap.Therefore,the performance of bearings directly determines the yield rate,operational stability and service life of the entire semiconductor production line.
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 Modular Installation & Structural Design:The integral structure with pre-drilled mounting holes enables direct bolt installation on the rotating shafts and platforms of wafer handling equipment.It can be mounted on pre-assembled gears and servo components without disassembling existing parts,greatly simplifying the assembly work of vacuum equipment.The streamlined structure also reduces structural gaps that may hide dust,which is critical for maintaining the ultra-clean environment of semiconductor workshops and lowering equipment assembly and maintenance costs.
Withstand Complex Dynamic Loads Steadily:A single RU crossed roller bearing replaces multiple traditional bearing sets to simultaneously bear radial force,axial force and tilting moments generated during wafer transportation and rotation.The uniform force distribution effectively avoids local structural deformation caused by long-term high-frequency operation,and reinforces the overall stability of robotic arms and transfer platforms.
Maintain Ultra-high Precision to Protect Wafers:Ultra-low rotational runout and excellent rigidity restrain micro-vibration during operation.It maintains consistent micron-level positioning accuracy,effectively preventing wafer displacement,scratches and circuit damage caused by rotation errors.Stable rotational torque ensures smooth and gentle movement of fragile wafers,greatly improving the product yield of semiconductor manufacturing.
Adapt to Vacuum & Ultra-clean Working Conditions:The compact structure and optimized internal design produce few particles during operation.Combined with optional special lubricants suitable for vacuum environments,the bearings fully meet the strict cleanliness standards of semiconductor workshops.Corrosion-resistant stainless steel options are also available to adapt to special process atmospheres and extend the service life of components.
Reduce Downtime and Improve Production Efficiency:Outstanding fatigue resistance and wear resistance enable 24-hour uninterrupted cyclic operation of wafer handling robots and transfer modules.It cuts down the frequency of bearing replacement and routine maintenance,avoids unexpected production shutdowns,and ensures the continuous and efficient operation of semiconductor production lines.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for wafer handling robots,transfer modules and other semiconductor precision equipment.
Semiconductor Equipment Customization:We develop low-particle,vacuum-compatible RU bearings with special clean-room lubricants and enhanced sealing.Full stainless steel versions are available on request,and 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 and cleanliness inspection 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 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