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International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge
For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
Brand Name
NSK
Model Number
VNR/NRXT
Certification
ISO 9001 / ISO 14001、JIS、RoHS、Global Reliability Standard
International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge
For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
Brand Name
NSK
Model Number
VNR/NRXT
Certification
ISO 9001 / ISO 14001、JIS、RoHS、Global Reliability Standard
Original NSK Crossed Roller Bearing VNR/NRXT - High Load Capacity for Robots
NSK (Nippon Seiko K.K.), Japan's first and one of the world's top three bearing manufacturers, offers a depth of technical expertise that is second to none. While others may focus on variety, NSK crossed roller bearings excel in "ultimate material life" and "industrial-grade extreme load capacity." The NSK VNR and NRXT series serve as the performance foundation for high-performance industrial robots, precision rotary tables, and large-scale medical imaging equipment. By arranging cylindrical rollers alternately at 90-degree angles in a V-groove raceway, NSK bearings handle radial, axial, and moment loads simultaneously within a single structure, ensuring exceptional fatigue life and low startup torque.
Product Highlights
World-Class Bearing Steel: Utilizes NSK's patented high-purity vacuum-degassed steel, offering extreme wear resistance and fatigue strength that far exceeds industry standards.
Exceptional Moment Rigidity: The preloaded crossed roller layout eliminates internal clearance, maintaining micron-level rigid support even when subjected to tons of overturning moment.
Accuracy Meets Longevity: NSK's proprietary precision machining ensures that the bearing maintains its initial rotational runout accuracy even after tens of thousands of hours of operation.
NRXT Economic Efficiency: The NRXT series, optimized for general industrial automation, provides high cost-effectiveness while retaining NSK's core precision DNA.
Optimized Low Friction Torque: Micro-optimization of roller and cage shapes enables extremely smooth startup rotation, ideal for precision control requiring frequent starts and stops.
Comprehensive Size Range: With outer diameters ranging from 40mm to 700mm+, NSK meets the requirements for everything from small robotic arms to massive radar antennas.
Core Parameter Table (Key Series)
Series
Structural Features
Precision Class (ISO)
OD Range (mm)
Typical Advantage
Typical Application
VNR
High-Precision Standard
Class 5 / 4 / 2
40 - 600
Peak Rigidity & Accuracy
Robot Main Joints, Tables
NRXT
Compact & Economic
Class 5
40 - 200
Lightweight, Cost-Effective
Automated Indexing, Arms
RV Series
Reducer Compatible
Special High-Res
Varies
Matches RV Reducers
Heavy-Duty Robot Joints
Custom
Mounting Holes / Large
Custom
Up to 1000+
Simplified Install
Medical CT, Radar Bases
Application Fields
Medium & Large Industrial Robots: Critical components for axes 1, 2, and 3, which must withstand massive moments.
Medical Imaging Equipment: CT scanners and large X-ray gantries, requiring extreme silence and smoothness.
Radar & Communication Antennas: Support for ultra-large antennas and ground tracking system bases.
Semiconductor Manufacturing: Large wafer handling platforms and high-vacuum rotary actuators.
Frequently Asked Questions
What is the difference between NSK and IKO crossed roller bearings?
IKO has highly specialized sub-lines (like super-slim types). NSK focuses on reliability and extreme lifespan for medium-to-large sizes, maintaining an excellent reputation in heavy-duty, 24/7 industrial environments.
Are the NSK bearings you sell 100% genuine Japanese products?
Absolutely. We provide only genuine NSK products with laser-coded tracking and original factory batch verification.
Why is a crossed roller bearing better than a standard thrust bearing?
Thrust bearings can only handle axial force. An NSK crossed roller bearing can replace two bearings by handling both radial and axial loads, with several times the resistance to overturning, drastically reducing the size of the mechanism.
What should I keep in mind during installation?
These bearings require extremely high flatness of the mounting surface. Any unevenness will cause uneven load distribution on the rollers, severely affecting life. Precision-ground mounting surfaces are recommended.
Does NSK provide long-life grease?
Yes. Units are typically pre-filled with NSK's specialized long-life grease. For special environments (like high vacuum or cleanrooms), we can request specific aerospace-grade lubricants.
What is the lead time for VNR models?
We maintain stock for common VNR specifications (1-2 weeks). Large or custom models typically have a factory lead time of 12-16 weeks.
