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 minimally invasive surgical robot micro joints 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 sterile medical operating room conditions.Cage materials include lightweight Nylon 66,high-strength brass,and customized composite materials Sealing forms:Open type CRBH-A for dust-free sterile operating cabins;double-side contact rubber sealed CRBH-AUU for environments with medical disinfectant mist Lubrication modes:Medical low-outgassing long-term grease lubrication for sterile operating environments (≤120°C);circulating oil lubrication for ultra-high speed ≤3000 rpm and heavy-load working scenarios Delivery cycle:Standard stock models 7–15 days;customized medical dedicated non-standard specifications require separate negotiation on production lead time.
Minimally invasive surgical robot joints are multi-degree-of-freedom rotary articulation components installed on robotic surgical arms,serving as the core motion unit for minimally invasive medical operations such as laparoscopic surgery,orthopedic minimally invasive treatment,thoracic and abdominal minimally invasive intervention.Each joint drives tiny surgical instruments,endoscopes and surgical forceps to complete micro-angle rotation,flexible bending and precise positioning inside the human body through servo drive modules.Compared with ordinary industrial robot joints,minimally invasive surgical robot joints have extremely stringent design thresholds:ultra-small outer diameter to reduce surgical wound trauma,ultra-smooth low-vibration rotation to avoid tissue damage,zero particle shedding to maintain operating room sterility,and sub-micron repeated positioning accuracy to prevent surgical deviation.During long continuous surgery,each joint bears compound loads including the self-weight of surgical instruments,alternating overturning moment during multi-angle fine-tuning,and axial clamping force of manipulators.Any bearing jitter,precision attenuation or metal particle pollution will lead to surgical misoperation,tissue scratch and cross-contamination in the operating room,so the core rotary bearing of the joint must meet medical sterile,ultra-precision and high-rigidity comprehensive standards.
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.
Minimally invasive surgical robot joints:Medical customized CRBH stainless steel low-outgassing bearings act as core rotary support for each articulation joint of minimally invasive surgical robotic arms,micro instrument rotary shafts and end effector wrist rotating units,meeting sterile,low-vibration and ultra-precise minimally invasive surgical motion demands.
Ultra-smooth micro rotation eliminates surgical operation risk:CRBH factory preloaded structure thoroughly eliminates internal bearing clearance.When surgical robot joints perform micrometer-level fine adjustment inside human tissue,ultra-low rotation jitter and zero backlash completely avoid accidental scratch and tissue damage caused by mechanical shake,providing stable motion transmission for surgeons’ remote control operation,which is the core guarantee of safe minimally invasive surgery.
Ultra-thin integrated structure realizes miniaturized joint design:The thin cross-section one-piece design of CRBH cancels multi-bearing stacked combinations and auxiliary fixing flanges required by traditional bearing schemes,greatly shrinking the outer diameter of surgical robot joints.Smaller joint volume reduces the size of surgical wounds,shortens patient recovery cycles,and optimizes the flexible movement range of robotic arms inside narrow human body cavities.
Single bearing bears multi-directional surgical composite loads:Minimally invasive surgical joints constantly bear eccentric instrument weight,alternating bending moment and axial clamping force during repeated bending and rotating.A single CRBH bearing can simultaneously bear radial,axial and moment loads without assembling multiple sets of bearings,effectively restraining micro elastic deformation of joints under variable loads,maintaining stable surgical instrument posture during long-duration operations.
Medical customized materials satisfy sterile operating room standards:Newbeetrans provides SUS440 stainless steel CRBH variants resistant to alcohol and various medical disinfectants,matched with medical low-outgassing non-polluting grease and sealed structures to block metal abrasive particle shedding.Open clean-grade CRBH-A models have no volatile substances,completely avoiding cross-contamination of sterile operating rooms and surgical equipment,complying with medical device biocompatibility requirements.
Low-noise & low-friction motion improves surgical environment comfort:Polished roller end faces of CRBH greatly reduce rotation friction and running noise.Silent joint operation avoids frightening awake patients during local anesthesia minimally invasive surgery and creates a quiet operating environment for medical staff to concentrate on precise treatment.
Long service life cuts medical equipment maintenance downtime:GCr15 or stainless steel bearing rings with surface hardening treatment improve anti-fatigue performance by 30%,adapting to thousands of repeated surgical joint rotation cycles.Low heat accumulation design prevents thermal expansion precision drift; less frequent disassembly,cleaning and calibration reduces hospital medical equipment maintenance frequency and standby downtime.
Simplify surgical robot mechanical development and assembly:Different from RB split outer ring bearings that need independent preload adjustment,CRBH integrated inner and outer rings finish fixed preload at the factory stage.Medical robot manufacturers do not need to design complex clearance adjusting mechanisms for joint housings,shortening product R&D,assembly and precision calibration cycles of minimally invasive surgical robots.
Newbeetrans is a professional precision cross roller bearings manufacturer focusing on medical sterile customized CRBH series bearings for minimally invasive surgical robot joints and other medical rotary equipment.We provide full-size standard CRBH stock and medical-grade targeted customized bearing solutions for medical device manufacturers.
Full precision control:All raceways and cylindrical rollers undergo ultra-precision grinding to reach P5,P4 and P2 ultra-high precision standards.Every medical dedicated CRBH bearing passes strict low-vibration,zero-particle and low-outgassing sterile inspection before delivery.
Diverse medical customization capacity:Support SUS440 stainless anti-corrosion versions,silicon nitride ceramic hybrid rollers,medical sterile low-outgassing grease treatment,miniature thin-section non-standard sizes and lightweight brass cage customized models for micro surgical robot joints.
Stable fast delivery:Standard CRBH series in stock for 7–15 days;medical special customized bearings can complete sample delivery within 10–15 days according to drawing and process complexity.
Authoritative quality certification:All CRBH bearings comply with ISO 9001 and GB/T 307.1 precision bearing standards,and SGS sterile low-pollution test reports can be provided for medical industry customers upon request.
Global one-stop service:Complete multi-channel global logistics support to deliver medical-grade CRBH bearings to medical equipment manufacturers worldwide,with professional technical engineers providing bearing material,lubricant and model selection guidance for surgical robot joint rotary mechanisms.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
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sales@newbeetrans.com
+8615090185276