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.
RA Crossed Roller Bearings are ultra-thin,high-precision bearings specifically designed for compact and lightweight applications.They contain cylindrical rollers arranged at right angles to each other in a 90° V-groove,separated by spacer retainers.Precision grades reach P4/P2,with inner diameters from 50mm to 200mm and section heights of 8mm–13mm.Made of GCr15 high-carbon chromium steel or SUS440C stainless steel,they provide double-seal (UU/U) or open structures.With a runout tolerance ≤0.002mm and surface hardness HRC 60-62,they deliver high rigidity,low friction,and long service life for precision equipment.
Rotary tables of Italian filling machines are core precision rotary components widely used in food,daily chemical,pharmaceutical,and beverage filling production lines.As the"rotary core"of the filling machine,they drive containers (bottles,cups,cans) to rotate stably and accurately,completing multi-station processes such as container feeding,filling,capping,and labeling in sequence.These rotary tables demand ultra-high positioning accuracy,strong structural rigidity,corrosion resistance,and stable low-vibration operation.They must maintain precise indexing and smooth rotation under continuous high-speed operation,humid environments,and contact with liquids,avoiding positioning deviations or vibration that cause filling errors or liquid leakage.
Multi-Directional Load Capacity:Because the rollers are crossed at 90-degree angles,a single bearing can simultaneously support radial,axial,and moment loads from all directions.
Ultra-Thin & Lightweight Design:RA models are the thinnest versions in the crossed-roller lineup,with the thickness of both inner and outer rings reduced to an absolute minimum.This keeps related mechanical structures compact and lightweight.
High Rigidity & Accuracy:Despite the slim profile,the arrangement of the rollers prevents deformation under complex loads,making it possible to achieve stable,micron-level rotational accuracy.
Separable Outer Ring:The outer ring is a single-split type,while the inner ring is an integral piece (though split inner ring variants exist).This separable structure simplifies installation and allows for precise preloading.
Smooth Rotational Torque:Equipped with spacer retainers between the cylindrical rollers,these bearings exhibit a low friction coefficient,resulting in smooth and highly stable rotational torque,even at low speeds.
Key Industry Applications
Industrial Robotics:Extensively used in robot joints,wrists,and waists.Their high rigidity and ability to withstand complex twisting loads make them essential for precise,energy-efficient robotic movements.
Machine Tools:Utilized in CNC indexing heads,rotary tables,and machine tool spindles.They ensure high running accuracy and stability even when machining forces are applied.
Medical & Diagnostic Equipment:Deployed in CT scanners,MRI machines,surgical robots,and endoscopic equipment.Their compact profile allows them to fit within complex articulating arms and deliver quiet,exact motion control.
Semiconductor Manufacturing:Employed in wafer handling robots,photolithography machines,and precision rotary stages where contamination-free and cleanroom-compatible operation is mandatory.
Optical & Measuring Instruments:Used in astronomical telescopes,Coordinate Measuring Machines (CMM),and radar antennas to guarantee steady,exact tracking and measurement over long periods.
RA crossed roller bearings act as the core rotary support for the rotary tables of Italian filling machines,directly determining filling accuracy,operation stability,and equipment reliability.
High Rigidity Ensures Filling Precision:The crossed-roller structure provides excellent rigidity,resisting deformation under the weight of containers and dynamic rotary loads.It ensures the rotary table remains stable during high-speed indexing,preventing deflection that causes filling volume errors or liquid leakage.
Composite Load Capacity Adapts to Multi-Directional Forces:Simultaneously bears radial loads (container weight),axial loads,and overturning moment loads (rotary inertia during indexing),replacing multiple bearings and simplifying the rotary table’s compact structure.This reduces assembly errors and enhances stability during continuous multi-station rotation.
Precise Rotation Enables Accurate Indexing:P4/P2 grade precision and ≤0.002mm runout tolerance deliver exceptional rotational accuracy.This enables the filling machine rotary table to achieve arc-second-level angular precision,ensuring each container is accurately positioned at the filling station.
Sealing & Corrosion Resistance Adapt to Harsh Environments:Double-seal structure prevents liquid splashes and dust from entering the bearing;SUS440C stainless steel material resists corrosion from beverages,detergents,and other liquids,meeting the hygiene and durability requirements of food-grade production lines.
Compact Design Optimizes Equipment Layout:The ultra-thin and lightweight design perfectly fits the limited installation space of Italian filling machines,reducing the overall weight of the rotary system and improving motion agility while optimizing the equipment’s internal layout.
Low Vibration & Smooth Operation Reduces Maintenance:Optimized roller geometry minimizes friction and micro-vibration,ensuring jitter-free rotation.This smooth motion eliminates container shaking or liquid splashing during filling,maintaining consistent production quality and reducing equipment wear.
Long Life Supports 24/7 Continuous Production:Surface-hardened materials enhance fatigue resistance,supporting uninterrupted long-term operation in high-throughput filling lines.This reduces maintenance downtime and ensures continuous production efficiency.
Newbeetrans is a professional manufacturer of RA crossed roller bearings,providing tailored solutions for rotary tables of Italian filling machines and other precision rotary equipment.
Filling Machine-Focused Customization:Offers designs for high rigidity,zero backlash,corrosion resistance,and food-grade lubrication.Supports stainless steel construction,special sealing,and non-standard dimensions;samples ready in 10–15 days.
Precision Manufacturing:Adopts super-fine grinding for P4/P2 grade precision,with strict quality control for critical dimensions.Monthly production capacity exceeds 2 million sets.
Fast Delivery & Global Support Standard:RA series shipped within 72 hours;global logistics support available.
Quality Assurance:ISO 9001 & GB/T 307.1 certified;SGS inspection reports provided.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276