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. 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;miniature models like CRBH208A with only 8mm cross-section fit tiny compact rotary structures inside inspection equipment 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 SMT workshops;double-side contact rubber sealed CRBH-AUU for dustproof and splash-proof environments with tiny solder residues and flux mist Lubrication modes:Long-term low-outgassing grease lubrication for dust-free electronic workshops (≤120°C);circulating oil lubrication for ultra-high speed ≤3000 rpm heavy-duty rotary platforms Delivery cycle:Standard stock models 7–15 days;customized non-standard specifications require separate negotiation on production lead time
PCB assembly equipment covers full SMT production line machinery,including screen printers,chip mounters,reflow ovens,rotary fixture transfer platforms and multi-axis handling robots,used for solder printing,component placement and circuit board soldering assembly.AOI (Automatic Optical Inspection) equipment is core vision testing machinery deployed after printing,mounting and reflow processes,equipped with high-resolution industrial cameras,multi-angle LED light sources and precision rotary positioning stages,designed to automatically detect solder bridging,missing components,offset placement and surface defects on PCBs and PCBA boards.During continuous mass production,the rotary axes of PCB transfer jigs,camera swing arms and workpiece indexing turntables inside these devices bear compound loads:PCB board self-weight,camera module gravity,frequent alternating overturning moment during multi-angle scanning and intermittent indexing rotation.Electronic assembly workshops contain micro solder dust,flux volatile mist and constant-temperature clean environment requirements,which put forward harsh standards for rotary bearings:ultra-low rotation jitter,micron repeated positioning accuracy,zero particle shedding,low outgassing and long-term stable precision retention.Any tiny bearing runout or micro-vibration will blur optical imaging,cause defect misjudgment and reduce PCB inspection yield.
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,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.
PCB Assembly & AOI Inspection Equipments:Widely applied to rotary indexing turntables of SMT assembly lines,AOI camera swing rotary units,PCB fixture positioning platforms and handling robot wrist rotary joints,providing vibration-free,high-precision rotary support for optical scanning and circuit board transfer processes.
Eliminate optical imaging jitter to guarantee PCB inspection accuracy:CRBH factory preloaded structure eliminates internal bearing clearance,with ultra-small radial and axial runout.When AOI camera arms rotate multi-angle to scan tiny 0201/01005 chip components,the bearing restrains micro vibration completely,avoiding image blurring,distortion and defect misjudgment caused by rotary shake.Stable micron-level repeated positioning ensures consistent imaging reference for each PCB board,greatly lifting the detection rate of miniature solder defects.
Bear multi-angle composite loads for long-cycle assembly operation:During PCB assembly and inspection cycles,rotary platforms and camera arms simultaneously bear radial plate load,axial clamping force and large overturning moment from eccentric camera modules.A single CRBH bearing replaces multiple sets of ordinary ball bearings to evenly disperse multi-directional stress,preventing turntable bending deformation under continuous 24-hour production and maintaining flat PCB placement status for stable assembly and inspection.
Ultra-thin compact design optimizes equipment internal layout:CRBH thin cross-section integral structure cancels stacked multi-bearing assemblies and auxiliary positioning flanges,greatly reducing the thickness of rotary camera arms and indexing turntables.It saves precious internal installation space inside compact AOI machines and small SMT mounters,facilitating miniaturized,integrated equipment design and shortening equipment overall length for production line layout optimization.
Adapt dust-free SMT electronic workshop environments:Two matching versions meet workshop demands:open CRBH-A low-outgassing models for constant-temperature clean AOI optical cabins; CRBH-AUU double rubber sealed bearings block micro solder dust and flux mist from invading raceways,preventing roller abrasion and metal particle shedding that would contaminate circuit boards.SUS440 stainless steel customized bearings resist weak flux corrosion for long-term continuous operation.
Lower production line downtime and maintenance cost:GCr15 hardening-treated raceways and rollers lift anti-fatigue performance by 30%,retaining original precision after millions of indexing and scanning cycles.Low-friction polished roller end faces reduce operating heat rise,avoiding thermal expansion precision drift.Less frequent bearing disassembly,cleaning and calibration improves the uptime of PCB assembly and AOI inspection production lines.
Simplify equipment assembly and calibration procedures:Different from split outer ring RB bearings requiring manual preload adjustment during assembly,CRBH integrated inner and outer rings finish fixed preload before delivery.It reduces mechanical design difficulty for AOI and SMT equipment manufacturers,shortens assembly and optical precision debugging cycles,and supports customized sizes,lubrication and sealing schemes matching light-load PCB scanning and heavy fixture indexing scenarios.
Newbeetrans is a professional precision cross roller bearing manufacturer focusing on CRBH series integrated cross roller bearings for PCB assembly machines and AOI automatic optical inspection equipments.We provide full-size standard CRBH stock and targeted customized bearing solutions for SMT automation and vision inspection 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 SUS440 stainless steel anti-corrosion versions,ceramic roller hybrid bearings,vacuum low-outgassing cleanroom lubrication treatment,non-standard inner/outer diameter cross-section sizes and special brass cage high-strength customized models for AOI camera rotary arms and PCB indexing turntables.
Stable fast delivery:Standard CRBH series in stock for 7–15 days shipment;customized electronic inspection equipment 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 automation equipment manufacturers worldwide,with professional technical engineers providing bearing selection and installation matching guidance for PCB assembly and AOI rotary mechanism projects.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276