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.
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.
Robot reducer assemblies are core power transmission components widely installed on all types of industrial robots,collaborative robots and special automated robotic equipment.As a key link between servo motors and robot moving joints,reducers are responsible for reducing rotational speed,amplifying torque and improving motion precision,so as to realize stable and accurate actions of robot arms,rotary bases and moving platforms.Most reducer assemblies are designed with integrated rotary structures.Their internal rotary parts bear continuous composite loads,frequent start-stop rotation and alternating impact forces during long-term operation.The internal installation space of reducers is extremely narrow,which puts forward strict requirements on the size,structural compactness,load capacity and rotational accuracy of matching bearings.Meanwhile,robotic working environments may contain dust,moisture and fine debris.Any bearing failure,excessive runout or jitter will directly lead to transmission errors,positioning deviation and even equipment shutdown.Therefore,the performance of supporting bearings is crucial to the transmission efficiency,service life and operational stability of the entire robot reducer assembly.
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 Internal Assembly & Layout:The integral structure with pre-drilled mounting holes enables direct bolt installation inside reducer housings.It fits perfectly into the narrow internal space of reducer assemblies without extra flanges or auxiliary fixing parts,simplifying the overall structural design and greatly improving assembly efficiency.
Bear Complex Composite Transmission Loads:A single RU bearing replaces multiple traditional bearing combinations to bear radial force,axial force and tilting moment generated during power transmission synchronously.It effectively disperses load stress,avoids local deformation caused by long-term torque impact,and maintains stable transmission performance of the reducer.
Guarantee High-precision Torque Transmission:Ultra-low rotational runout and preload design eliminate internal gaps.The stable rotational torque effectively suppresses transmission jitter and backlash,ensuring the reducer outputs accurate speed and torque.This fundamentally improves the repeated positioning accuracy of robot joints.
Adapt to Compact Built-in Structure:The ultra-thin,lightweight body matches the miniaturization and integrated design trend of modern robot reducers.It reduces the overall weight and motion inertia of the transmission system,and optimizes the dynamic response performance of robotic equipment.
Resist Harsh Working Conditions:Optional U/UU rubber sealing structures block dust and debris entering the reducer.Matched with special lubricants,the bearings maintain stable operation for a long time in normal industrial environments,preventing abnormal wear caused by pollution.
Extend Service Life & Reduce Downtime:Excellent fatigue resistance and wear resistance adapt to 24-hour continuous cyclic operation of robot reducers.It lowers the frequency of routine maintenance and component replacement,reduces unexpected equipment downtime,and improves the overall operating efficiency of automated production lines.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for robot reducer assemblies and various high-precision rotary equipment.
Robot Reducer Customization:We develop zero-backlash,high-rigidity RU bearings matched with special low-friction and long-life lubricants.Full stainless steel and enhanced sealing structures 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 precision standards.Every product undergoes full dimensional 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 overseas customers.
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