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.
RB Crossed Roller Bearings are high-precision components featuring cylindrical rollers arranged at 90°angles in alternating directions.This allows a single bearing to handle radial,axial,and moment loads simultaneously,making them ideal for compact,high-stiffness applications like robotics,CNC rotary tables,and medical equipment.Available precision grades cover P5,P4 and P2;inner diameter ranges from 30mm to 1250mm while cross-section height varies between 8mm and 110mm.The rings and rollers are manufactured from GCr15 high-carbon chrome steel with surface hardness HRC 60-62 or corrosion-resistant SUS440C stainless steel,and nylon 66 serves as lightweight bearing cage material.Two sealing options are available:standard open type for clean environment and UU/U contact rubber seal to block dust and liquid splashing with industrial heavy-duty grease lubrication.
Lithography and wafer inspection rotary stages are core ultra-precision motion components for semiconductor manufacturing equipment,operating in Class 100 and Class 1000 ultra-clean cleanrooms.As key carriers in chip production,lithography rotary stages drive silicon wafers to complete precise rotation and positioning during photolithography and pattern exposure processes.Wafer inspection rotary stages are responsible for rotating wafers to conduct full-scan detection of surface defects,dimensional accuracy and circuit patterns after lithography and etching.Most of these rotary stages are pre-assembled with gears and transmission components on the main spindle before bearing installation,which brings great assembly challenges to traditional integral bearings.Moreover,the ultra-clean semiconductor workshops impose extremely strict requirements on the supporting bearings:zero particle shedding,low outgassing,no rust,ultra-low vibration and nanometer-level rotational accuracy.Any tiny jitter,positioning deviation or particle pollution will lead to distorted lithography patterns,wafer scratches and mass production rejects,directly affecting the yield of semiconductor chips.
Multi-Directional Load Capacity:Unlike standard ball bearings,the crossed arrangement empowers the RB series to accommodate loads from all directions at once.
High Rigidity and Precision:The integration of a preload adjusts the bearing clearance,eliminating internal gaps and allowing for high rotational accuracy and minimal deformation under heavy loads.
Compact Space-Saving Profile:Because one crossed bearing replaces multiple conventional ball or roller bearings,they are exceptionally well-suited for tight,space-constrained assemblies.
Smooth Rotation:Spacer retainers separate the rollers,preventing them from skewing and eliminating friction between rolling elements for a stable,low-torque motion.
Industrial Robotics & Automation:Used in basic motion parts like rotary joints,waists,and wrists for smooth and precise motion control.
Precision Machine Tools:Utilized in the rotating tables of machining centers,rotary units of manipulators,and indexing heads to handle heavy,spinning components.
Medical Equipment:Deployed in sophisticated imaging components like MRI machines,CT scanners,and surgical robots to provide smooth,accurate,and vibration-free movement.
Semiconductor & IC Manufacturing:Provide micron-scale accuracy for wafer handling equipment,photolithography machines,and cleanroom pick-and-place systems.
Optical & Measuring Instruments:Essential for the tracking accuracy of astronomical telescopes,radar antennas,and Coordinate Measuring Machines (CMM).
RB crossed roller bearings are irreplaceable core components of lithography and wafer inspection rotary stages,and their performance directly determines the process accuracy,product yield and continuous operation capability of semiconductor production lines.
First,the split outer ring design solves the installation difficulty effectively.Since the main spindle of the rotary stage is pre-fitted with gears and transmission parts,the separable outer ring of RB bearings can be mounted around the pre-assembled shaft without disassembling existing components.It greatly shortens the equipment assembly cycle and cuts manufacturing and after-sales maintenance costs for semiconductor equipment manufacturers.
Second,excellent composite load performance optimizes the internal structure.A single RB bearing replaces multiple bearing sets to bear various dynamic loads synchronously,simplifying the mechanical layout of rotary stages and reducing potential vibration sources caused by component matching errors.
Third,ultra-high rigidity and precision guarantee process quality.The high-rigidity structure restrains micro-vibration and rotational deflection during operation.With P4/P2 high precision grades,it maintains stable nanometer-level positioning accuracy,preventing lithography pattern distortion and wafer inspection misjudgment,and effectively improving the qualified rate of finished chips.
Fourth,customized materials and structures adapt to cleanroom standards.Optional SUS440C stainless steel,low-outgassing special grease and multiple sealing options avoid particle pollution and volatile substances,protecting wafers and maintaining the cleanliness of ultra-clean workshops.
Fifth,superior durability reduces unplanned downtime.The high-fatigue material enables RB bearings to support 24-hour uninterrupted operation of semiconductor production lines.It lowers the frequency of regular maintenance and bearing replacement,and maximizes the overall operational efficiency of the production line.
Newbeetrans is a professional manufacturer of RB crossed roller bearings.We provide one-stop customized bearing solutions for semiconductor lithography and wafer inspection rotary stages,as well as various heavy-load precision equipment.
Semiconductor Cleanroom Customization:We develop dedicated RB bearings with low particle emission,low outgassing and zero backlash.Custom stainless steel materials and special cleanroom-grade lubricating grease are available.Custom samples can be delivered within 10–15 days.
Strict Precision Manufacturing:All raceways and rollers adopt super-fine grinding technology to meet P5/P4/P2 precision standards.Every product undergoes full dimensional inspection,with a monthly production capacity of over 2 million sets.
Fast Global Delivery:Standard RB bearings are kept in stock for quick shipment,and we support global multi-channel logistics services for customers around the world.
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