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.
CT and MRI scanner gantry rotary components are the core rotary units of advanced medical imaging equipment.They undertake the key task of driving the entire scanning gantry to perform stable cyclic rotation during patient scanning,and are widely used in hospitals,medical examination centers and medical research institutions.These rotary components need to support the huge weight of the scanning rack and bear complex multi-directional dynamic loads during operation.Most of the main spindles of the gantry are pre-installed with gears and transmission parts before bearing assembly,which brings great installation difficulties to traditional integral bearings.In addition,medical equipment has extremely strict requirements:the rotating system must run with ultra-low vibration,low noise and zero oil leakage to ensure clear medical images and a hygienic diagnosis environment.Long-term uninterrupted operation also puts forward high standards for the load resistance,rigidity,precision and durability of supporting bearings.The running state of bearings directly affects the imaging effect and normal operation of medical scanners.
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 indispensable core components for wafer handling robot elbow and shoulder joints,which directly affect wafer transfer accuracy,cleanroom safety and the overall production efficiency of semiconductor lines.
Simplify Complex Assembly Work:The separable outer ring can be installed directly on the spindle with pre-mounted gears and reducers without disassembling existing components.It effectively shortens the robot assembly cycle and lowers production and maintenance costs for semiconductor equipment manufacturers.
Adapt to Complex Composite Loads:A single RB bearing replaces multiple bearing sets to bear the self-weight of the robot arm,wafer payload and swing overturning moment synchronously,simplifying the internal structure of joints and making the robotic arm more compact.
Guarantee Ultra-precise Wafer Positioning:P4/P2 high precision controls minimal rotational runout,ensuring consistent repeated positioning accuracy of joints.It realizes accurate docking between wafers and process equipment and avoids scrapping caused by positioning errors.
Meet Strict Cleanroom Requirements:Low-friction design reduces particle generation.Optional SUS440C stainless steel and special low-outgassing lubricant prevent pollution to the ultra-clean environment.UU rubber seal can also block fine dust in the air.
Suppress Micro-vibration to Protect Wafers:High rigidity restrains micro-vibration during robot movement,eliminating wafer scratches,cracks and other defects caused by jitter in the transfer process.
Reduce Production Downtime:Excellent fatigue resistance enables 24-hour uninterrupted operation of wafer handling robots.It cuts the frequency of bearing replacement and routine maintenance,and improves the continuous production capacity of semiconductor workshops.
Newbeetrans is a professional manufacturer of RB crossed roller bearings.We provide targeted customized bearing solutions for CT/MRI scanner gantry rotary components and various heavy-load precision equipment.
Medical Equipment Customization:We develop low-noise,zero-leakage RB bearings matched with medical-grade lubricants.Full stainless steel and special sealing structures are available,and customized samples can be delivered within 10–15 days.
Strict Precision Manufacturing:All raceways and rollers adopt super-fine grinding to reach P5/P4/P2 precision standards.Full inspection is implemented for all finished products,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 provide complete global multi-channel logistics services for overseas clients.
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