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.
CRBH Cross Roller Bearings are ultra-precision,high-rigidity bearings featuring cylindrical rollers arranged at right angles between the inner and outer rings.This single-unit design allows them to simultaneously handle complex loads in all directions-radial,axial,and moment.
Core Basic Specifications
Accuracy grades:P5,P4,P2 ultra-precision levels for micron-level positioning.Metric size range:Inner diameter 20-1250 mm,outer diameter 36-1500 mm,cross-section height 8-110 mm;miniature models like CRBH208A with only 8mm cross-section fit tiny robot wrists Material options:Bearing rings and rollers adopt GCr15 high-carbon chromium steel (surface hardness HRC 60-62) for standard industrial use;SUS440C stainless steel for corrosion-resistant,cleanroom and vacuum working conditions.Cage materials include lightweight Nylon 66,high-strength brass,and customized composite materials.Sealing forms:Open type CRBH-A for clean dust-free environments;double-side contact rubber sealed CRBH-AUU for dustproof and splash-proof in humid,dusty workshop conditions Lubrication modes:Long-term grease lubrication for ≤120°C and vacuum environments;circulating oil lubrication for ultra-high speed ≤3000 rpm and heavy-load working scenarios Delivery cycle:Standard stock models 7-15 days;customized non-standard specifications require separate negotiation on production lead time
Indexing positioning rotary stations are core automated rotary positioning equipment widely deployed across precision manufacturing,automotive assembly,3C electronics processing,semiconductor packaging and precision testing industries.Equipped with servo motors,precision reducers and rotary load-bearing bearings,these stations realize fixed-angle intermittent rotation,multi-station cyclic switching and ultra-repeatable angular positioning.In actual production workflows,indexing rotary stations undertake full-cycle operations including workpiece loading,precision machining,gluing,inspection,assembly and unloading.During continuous operation,the rotary platform bears composite loads including workpiece gravity,cutting force,clamping impact and overturning moment caused by eccentric placement of parts.Production and inspection procedures impose extremely strict performance requirements on the rotary core bearing of indexing stations:zero rotational jitter,ultra-low rotation runout,long-term stable positioning repeatability and high rigidity to resist instantaneous impact loads.Any tiny deformation or positioning deviation of the bearing will trigger dimensional errors of finished products,increase reject rates and reduce the consistency of mass production.
Multi-Directional Load Capacity:Cylindrical rollers are arranged crosswise at 90° angles in a V-groove,allowing a single bearing to handle loads from all directions simultaneously.
Integrated,Non-Separable Rings:Because the inner and outer rings are solid and do not separate,the bearing's performance is unaffected by the surrounding mounting structure.
Smooth Rotation:They utilize separators between the rollers to prevent friction and ensure smooth,stable rotation,even at medium-to-high speeds.
High Precision & Rigidity:The line-contact design between rollers and raceways keeps elastic deformation incredibly small,resulting in superior stiffness and minimal backlash.
Industrial Robotics & Automation:They are the premier choice for articulating robot joints (bases,waists,shoulders,and wrists) and speed reducers,where they provide the precise motion control and rigidity necessary for heavy or delicate tasks.
Machine Tools:Employed extensively in CNC rotary tables,grinding machines,and turning centers where heavy spinning components meet high resistance,they minimize mounting errors and offer high rigidity during operations.
Medical & Imaging Equipment:Their smooth,vibration-free rotation and compact size make them ideal for positioning articulating arms in labs and ensuring the precise rotation of camera or imaging components in CT scanners and MRI machines.
Semiconductor Manufacturing:They deliver the micron-scale precision and repeatability required for pick-and-place systems and wafer handling equipment.
Realize compact,lightweight station structural design:The integrated thin cross-section structure of CRBH cross roller bearings eliminates the need to stack multiple sets of traditional bearings and additional positioning flanges for indexing rotary stations.It effectively reduces the overall thickness and rotational inertia of the rotary platform,shrinks the overall equipment footprint and optimizes the layout of multi-station assembly lines.Lightweight rotary structures also improve the dynamic response speed of rapid indexing switching,shortening single-station beat time and boosting production efficiency.
Ensure micron-level repeated indexing positioning accuracy:Ultra-precision super-finished raceways and preloaded orthogonal cross roller structure eliminate internal clearance of CRBH bearings.When indexing stations perform thousands of cyclic angle switching operations every day,extremely low rotational runout completely avoids platform deflection and position drift caused by bearing clearance fluctuation.Stable repeated positioning accuracy guarantees uniform processing,assembly and inspection standards for all workpieces on multi-station rotary fixtures,effectively cutting product scrap losses caused by positioning offset.
Resist complex composite loads and stabilize rotary operation:Indexing rotary stations frequently bear eccentric workpiece loads,clamping instantaneous impact and alternating overturning moment during indexing rotation.A single CRBH bearing can simultaneously bear radial,axial and moment loads,uniformly distributing multi-directional stress without local stress concentration.It restrains micro elastic deformation of the rotary platform under heavy load,ensuring the rotary table stays flat during long-term continuous operation and maintaining consistent motion trajectory for processing and detection processes.
Adapt diverse harsh workshop production environments:CRBH series supports multiple sealing configurations: open-type bearings for dust-free constant-temperature precision testing workshops, and double-sided UU rubber contact seals for dust,cutting fluid and metal chip isolation in machining and assembly workshops.SUS440C stainless steel customized versions can be matched to corrosive liquid spraying processes such as gluing and surface coating,extending the service life of indexing station core rotating components under complex working conditions.
Lower equipment maintenance frequency and reduce production downtime:GCr15 bearing rings and rollers processed by surface hardening treatment increase fatigue resistance by 30%.Ultra-fine polished roller end faces lower friction heat generation during frequent reciprocating indexing rotation,slowing down raceway wear.Sealed CRBH models block external pollutants from invading the bearing interior,greatly extending the lubrication maintenance cycle of indexing stations and reducing production line downtime caused by bearing replacement and calibration.
Simplify equipment mechanical design and assembly calibration:Different from RB split outer ring bearings that require secondary preload adjustment after installation,CRBH integrated inner and outer rings are preloaded during production with fixed stable precision performance.Equipment manufacturers do not need to design complicated preload adjusting structures for indexing rotary stations,shortening the mechanical development cycle of rotary positioning equipment and greatly reducing the time spent on post-assembly precision calibration.
Newbeetrans is a professional precision cross roller bearing manufacturer focusing on CRBH series integrated cross roller bearings for indexing positioning rotary stations,CNC rotary tables and automation positioning equipment.We provide full-size standard CRBH stock and targeted customized bearing solutions for automation equipment manufacturers.
Full precision control:All raceways and cylindrical rollers undergo ultra-precision grinding to reach P5,P4 and P2 ultra-high precision standards.Every finished bearing passes strict rotation runout,rigidity and low-jitter inspection before delivery.
Diverse customized capacity:Support SUS440C stainless steel anti-corrosion versions,ceramic roller hybrid bearings,vacuum low-outgassing lubrication treatment,non-standard inner/outer diameter cross-section sizes and special brass cage high-strength customized models for special indexing station working conditions.
Stable fast delivery:Standard CRBH series in stock for 7-15 days shipment;customized special bearings for indexing equipment can complete sample delivery within 10-15 days according to drawing complexity.
Authoritative quality certification:All CRBH bearings comply with ISO 9001 and GB/T 307.1 precision bearing standards,and official SGS inspection test reports can be provided upon client request.
Global one-stop service:Complete multi-channel global logistics support to deliver CRBH bearings to automation equipment manufacturers worldwide,with professional technical engineers providing bearing selection and installation matching guidance for indexing rotary stations.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276