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.
Radiation therapy rotary treatment racks are core rotary assemblies of advanced medical radiation therapy equipment,widely deployed in oncology hospitals,specialized cancer treatment centers and large medical institutions.These racks carry radiotherapy emitters and auxiliary components,and perform multi-angle cyclic rotation and precise positioning to deliver targeted radiation treatment to patients.The rotary racks bear huge dead weight and alternating eccentric overturning loads during operation.In most structural designs,gears and reducers are pre-assembled on the main spindle before bearing installation,which brings great challenges to the assembly of traditional integral bearings.Additionally,medical equipment has extremely stringent requirements:the rotary system must operate with ultra-low vibration,low noise and zero grease leakage to maintain a hygienic medical environment and guarantee treatment safety.The rotational accuracy,rigidity and long-term stability of supporting bearings directly determine the effect of radiation therapy and the normal operation of medical devices.
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 supporting parts for radiation therapy rotary treatment racks.Their overall performance is closely linked to radiotherapy accuracy,patient safety and long-term stable operation of medical equipment.
Simplify Complex On-site Assembly:The separable outer ring can be mounted directly on pre-fitted spindles with gears and reducers.There is no need to remove pre-installed transmission parts,which effectively shortens the equipment assembly cycle and reduces production and after-sales maintenance costs for medical device manufacturers.
Withstand Complex Eccentric Loads:One RB bearing replaces multiple traditional bearing sets to bear the overall weight of the rack and dynamic overturning loads simultaneously.It simplifies the internal mechanical structure of the rotary rack and makes the equipment layout more compact and reasonable.
Guarantee Precise Radiotherapy Positioning:P4 and P2 high-precision grades control tiny rotational runout,ensuring consistent positioning accuracy of the rotary rack.Accurate angle control is the key to targeted radiation therapy,which effectively avoids treatment deviation caused by positioning errors.
Enable Low-Vibration & Low-Noise Operation:Excellent structural rigidity restrains micro-vibration during rotation.The optimized roller structure reduces operating noise,creating a comfortable and safe treatment environment for patients and stable operating conditions for medical staff.
Comply with Medical Hygiene Standards:Multiple sealing options effectively prevent grease leakage and external dust intrusion.Optional SUS440C stainless steel and special medical-grade lubricants avoid pollution,fully complying with strict hygiene requirements of medical workshops and treatment rooms.
Extend Equipment Service Life & Reduce Downtime:Outstanding fatigue resistance enables 24-hour uninterrupted operation of radiotherapy equipment.It cuts the frequency of bearing replacement and routine maintenance,ensuring medical services can be provided continuously and stably.
Newbeetrans is a professional manufacturer of RB crossed roller bearings.We provide customized bearing solutions tailored for radiation therapy rotary treatment racks and various heavy-duty precision equipment.
Medical-grade Customization:We develop zero-leakage,low-noise RB bearings matched with medical special lubricants.Full stainless steel and enhanced sealing structures are available to meet medical standards.Custom 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.Every product undergoes full dimensional inspection,and our monthly production capacity exceeds 2 million sets.
Fast Global Logistics:Standard RB bearings are kept in stock for prompt shipment.We provide complete multi-channel logistics services for global customers.
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