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.
Wafer handling cleanroom robots are special multi-joint automated manipulators exclusively deployed in semiconductor ultra-clean workshops (Class 10/Class 100 cleanrooms).They are the core transmission equipment of front-end wafer manufacturing processes,responsible for automatic transferring,loading and unloading fragile silicon wafers between lithography machines,etching equipment,thin-film deposition equipment and wafer cassettes.
Core Working Characteristics:They perform high-frequency repeated rotary positioning of wafer arms,need to bear the self-weight of wafer end-effectors and wafer overturning moment loads during long-cycle continuous operation.Semiconductor production puts forward extremely strict standards for the robots:zero particle shedding,ultra-low vibration,sub-micron repeated positioning accuracy,stable operation in constant-temperature dust-free/vacuum environments,any tiny rotation jitter or runout will scratch wafers,lead to circuit pattern deviation and massive wafer scrapping.
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.
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.
CRBH series integrated cross roller bearings are irreplaceable core rotary components for wafer handling cleanroom robots,their structural and performance advantages directly determine wafer transfer yield,cleanroom pollution control level and long-term stable operation of semiconductor production lines.
Realize ultra-slim lightweight wafer arm joint design:CRBH integral thin-section ultra-thin cross-section structure cancels the stacked combination of multiple traditional bearings and auxiliary fixing flanges,greatly reducing the outer diameter of robot rotary joints and overall arm weight.Slim joint structure optimizes the internal airflow field of ultra-clean workshops,reduces turbulent flow and particle dust generation,meeting the strict dust-free control requirements of semiconductor cleanrooms;lightweight arms also improve the dynamic response speed of multi-axis linkage and wafer transfer efficiency.
Guarantee sub-micron repeated positioning accuracy for fragile wafer transmission:Ultra-precision super-finished raceways and factory preloaded orthogonal cross roller structure completely eliminate internal bearing clearance.In thousands of cycles of continuous wafer picking and placing operations,extremely low rotation runout effectively avoids tiny shaking of the wafer gripper,prevents wafer edge scratch and circuit pattern displacement caused by positioning deviation,greatly reducing the scrap rate of high-value silicon wafers.
Stabilize robot arm operation under composite overturning loads:When the wafer arm stretches to pick and place wafers,the bearing bears superposed radial load,axial load and large overturning moment at the same time.Single CRBH bearing can evenly disperse multi-directional composite stress,restrain micro bending deformation of long cantilever arms,keep the wafer horizontal and stable during high-speed transfer,avoid wafer tilt and drop accidents.
Meet strict ultra-clean & vacuum environment adaptability requirements:Support customized SUS440C stainless steel anti-corrosion CRBH models and special low-outgassing cleanroom vacuum lubricants;sealed UU type bearings effectively block internal tiny metal abrasive particles from overflowing into the cleanroom atmosphere,complying with Class 10 ultra-clean workshop and wafer vacuum processing equipment operation standards,eliminating particle pollution risks to wafers and optical components.
Simplify semiconductor equipment design and robot assembly calibration:Different from RB split outer ring bearings that require secondary preload adjustment,CRBH integrated inner and outer rings complete preloading before delivery,reducing the difficulty of robot joint housing structural design;the unified precision consistency of finished bearings shortens the assembly and precision calibration cycle of wafer handling robots for semiconductor equipment manufacturers,lowering equipment production costs.
Extend service life and reduce semiconductor line downtime:GCr15 bearing rings and rollers with surface hardening treatment improve fatigue resistance by 30%.Ultra-polished roller end faces reduce friction heat generation and abrasion loss.Sealed CRBH-AUU types isolate external process dust and chemical volatile substances in cleanrooms,slow bearing wear,reduce regular equipment maintenance and calibration frequency,improve the continuous operation capacity of wafer production lines.
Newbeetrans is a professional precision cross roller bearing manufacturer focusing on CRBH series integrated cross roller bearings for wafer handling cleanroom robots and semiconductor front-end automation equipment.We provide full-size standard CRBH stock and targeted customized bearing solutions for semiconductor 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-particle shedding 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 cleanroom wafer transfer robots.
Stable fast delivery:Standard CRBH series in stock for 7-15 days shipment;customized semiconductor special bearings 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 semiconductor equipment manufacturers worldwide,with professional technical engineers providing cleanroom robot joint bearing selection and installation matching guidance.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276