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.
Base rotary support serves as the core foundational rotating component of large engineering robots widely used in mine handling,metallurgical dismantling,construction demolition and heavy bulk material transportation scenarios.This base component bears the full dead weight of the entire robot body plus alternating dynamic loads from long boom weight and sudden impact during high-intensity field operations,enabling 360° unrestricted horizontal rotation of the whole robotic equipment.Most engineering robot base spindles are pre-assembled with large reducers and transmission gears before bearing installation,which creates big assembly obstacles for conventional integral bearings.Meanwhile,these robots usually work in harsh open-air sites filled with sand,dust,muddy water and sharp metal scraps,putting strict requirements on the bearing's load capacity,structural rigidity,sealing performance and anti-impact property.The overall stability and positioning accuracy of engineering robots are directly determined by the running status of base rotary support bearings.
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 function as the irreplaceable core supporting parts of large engineering robot base rotary supports and dominate the overall running stability and service lifespan of complete robotic equipment.
Split Outer Ring Simplifies Complex Base Assembly:Thanks to separable outer ring design,RB bearings can be installed around pre-mounted base spindles with fixed reducers and gears without dismantling pre-installed transmission components,greatly shortening robot production cycle and lowering assembly labor costs.
Single-Bearing Integrated Load Bearing Optimizes Base Structure:One RB bearing replaces multiple sets of assorted bearings to bear comprehensive loads from robot self-weight,boom payload and operation overturning moment,simplifying base mechanical layout and reducing overall equipment weight.
Ultra-High Rigidity Restrains Dynamic Deformation & Vibration:Superior structural rigidity effectively offsets bending deformation caused by sudden construction impact and overweight loads,avoiding base shaking and positioning offset during high-load field operation.
High Precision Ensures Stable Whole-Machine Positioning:P4/P2 high-precision grade controls minimal rotational runout,keeping consistent repeat positioning accuracy of robot bases for reliable construction operation.
Diversified Sealing & Material Solves Harsh Working Condition Problems:UU double rubber seal prevents sand,mud and construction waste from entering bearing interior; customized SUS440C stainless steel RB bearings deliver excellent anti-corrosion performance for rainy and damp construction sites.
Enhanced Fatigue Resistance Reduces Unplanned Downtime:Surface-hardened bearing components support long-term 24-hour non-stop heavy-duty construction,cutting regular maintenance frequency and improving customer's production efficiency.
Newbeetrans is a professional RB crossed roller bearing manufacturer,supplying tailor-made bearing solutions specially designed for large engineering robot base rotary supports and various heavy-load precision machinery.
Engineering Robot Targeted Customization:Develop high-impact,high-rigidity RB bearings with heavy-duty dustproof sealing,anti-mud special industrial grease or full stainless steel material as per customer requirements; customized samples can be finished within 10–15 days.
Precision Production Control:All raceways and rollers adopt super-fine grinding technology to achieve P5/P4/P2 precision standards with strict full inspection on critical dimensions;
Fast Global Logistics:Standard in-stock RB bearings can be shipped out rapidly with worldwide multi-channel logistics support.
Authoritative Quality Certification:Products comply with ISO 9001 and GB/T 307.1 standards,and formal SGS inspection certificates are available upon client's request.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276