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.
CNC rotary tables and indexing plates are core functional components of computer numerical control machine tools and multi-axis machining centers.As essential parts to realize multi-station processing and multi-angle cutting,they are widely applied in mold manufacturing,aerospace part processing,automotive component production and other industrial fields.CNC rotary tables enable workpieces to rotate continuously at a set speed,while indexing plates complete accurate angle positioning and station switching,supporting one-time clamping and multi-surface machining.Most rotary tables and indexing plates adopt an integrated structural design.Their internal main shafts are pre-assembled with drive gears,reducers and servo components before bearing installation.During long-term operation,these components bear huge workpiece weight,alternating cutting impact and continuous overturning moment.Meanwhile,the machining workshop is filled with metal chips,cutting fluid mist and dust.Therefore,the supporting bearings must feature ultra-high rotational accuracy,strong structural rigidity,excellent impact resistance and reliable sealing performance.The bearing’s operating state directly affects the machining dimensional tolerance,surface finish and overall production efficiency of workpieces.
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.
Streamline Integrated Installation & Maintenance:The one-piece structure with pre-drilled mounting holes can be directly bolted and fixed on the spindle of rotary tables and indexing plates.It can be installed without disassembling pre-mounted gears and drive components,greatly simplifying the assembly process of machine tool accessories,shortening production cycles and reducing later maintenance difficulty and costs for equipment manufacturers.
Bear Heavy Combined Machining Loads:A single RU crossed roller bearing replaces multiple sets of traditional bearings to synchronously bear workpiece gravity,cutting radial force and overturning moment generated during rotation and indexing.The reasonable force distribution avoids local stress concentration and structural deformation,and enhances the overall stability of the rotary mechanism under heavy-load cutting conditions.
Ensure Machining Accuracy & Surface Quality:Preload design and ultra-low rotational runout effectively restrain micro-jitter during operation.It maintains excellent positioning and indexing accuracy,preventing dimensional deviation and workpiece scrapping caused by rotation errors.Stable rotational torque also optimizes the surface finish of machined parts,meeting the high-precision processing requirements of high-end workpieces.
Adapt to Compact Machine Tool Layout:The ultra-thin and compact profile perfectly fits the limited internal space of CNC rotary tables and indexing plates.It optimizes the internal structural layout of machine tools,reduces the overall weight and motion inertia of rotating parts,and improves the dynamic response speed during high-frequency indexing and continuous rotation.
Resist Harsh Machining Environments:Optional U/UU rubber sealing structure effectively blocks metal chips and splashing cutting fluid.Matched with special lubricants,the bearings can operate stably for a long time in dusty and humid machining workshops,preventing abnormal wear and failure caused by environmental pollution.
Extend Service Life & Boost Production Efficiency:Excellent fatigue resistance and impact resistance enable the bearings to adapt to 24-hour continuous operation of CNC machine tools.It reduces the frequency of bearing replacement and equipment downtime,ensures the continuous progress of processing tasks,and improves the overall production capacity of workshops.
Newbeetrans is a professional manufacturer specializing in RU crossed roller bearings.We deliver customized bearing solutions tailored for CNC rotary tables,indexing plates and various high-precision machine tool equipment.
Machine Tool Customization:We develop high-rigidity,impact-resistant RU bearings with enhanced sealing and cutting fluid resistant lubricants.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 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