Original Nabtesco RV Reducer RV-E/RV-C/RV-N Series for Heavy-Duty Robotic Joints
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Highlight
Original Nabtesco RV Reducer
,RV-E heavy-duty robotic reducer
,RV-C series servo drive motor
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Repeatability± 30 Arc-sec
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Torsional RigidityHigh Stiff Design
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Lost Motion< 1 Arc-min (Ultra-low Backlash)
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Impact Resistance500% Rated Torque (Instantaneous)
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SealingIntegrated High-Quality Oil Seals
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Compatible BrandsABB, Fanuc, KUKA, Yaskawa, Kawasaki
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Shipping TermInternational Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
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Freight ChargeFor 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
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Place of OriginJapan
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CertificationISO 9001 / ISO 14001 、CE、RoHS、Japan Precision Engineering
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Model NumberRV-E、RV-C、RV-N
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Minimum Order Quantity1
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Price$1,000 - $8,000
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Packaging DetailsOriginal
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Delivery Time3-5Workdays
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Payment TermsL/C,D/A,D/P,T/T,Western Union
Original Nabtesco RV Reducer RV-E/RV-C/RV-N Series for Heavy-Duty Robotic Joints
Original Nabtesco RV Reducer RV-E/RV-C/RV-N Series for Heavy-Duty Robotic Joints
Nabtesco is the undisputed global leader in precision cycloidal speed reducers, with over 10 million units shipped worldwide. The RV-E (Standard), RV-C (Hollow Shaft), and RV-N (Compact) series are the industry benchmarks for heavy-duty industrial robots, CNC machines, and medical positioning equipment. Featuring a unique two-stage reduction structure, these reducers offer exceptional impact resistance, high torsional rigidity, and extremely low lost motion, maintaining micrometer-level positioning accuracy even under extreme heavy-load conditions.
Product Highlights
- Extreme Rigidity & Torsional Strength: The cycloidal design distributes force across multiple contact points, ensuring minimal deformation under high loads.
- Ultra-Low Lost Motion: The entire series maintains lost motion within 1 arc-min, ensuring absolute precision and repeatable stopping positions.
- Massive Load Capacity: Integrated large-diameter angular contact ball bearings support massive external moments and axial loads directly without additional support.
- Superior Impact Resistance: Capable of handling instantaneous torque up to 5 times the rated value, ideal for emergency stops and high-inertia robotic movements.
- Compact & Proven Durability: Backed by over 30 years of field performance, the compact design ensures a design life exceeding 10,000 hours.
- Versatile Configurations: Available in various formats, including large hollow shafts for cable management and ultra-slim profiles for space-sensitive applications.
Core Parameter Table (RV-E Series)
| Model (Size) | Rated Torque (Nm) | Max Impact Torque (Nm) | Gear Ratio | Lost Motion | Outer Diameter (mm) |
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| RV-20E | 196 | 980 | 41/81/121 | < 1 arc-min | 145 |
| RV-40E | 392 | 1,960 | 81/105/121 | < 1 arc-min | 170 |
| RV-80E | 784 | 3,920 | 81/105/121 | < 1 arc-min | 215 |
| RV-160E | 1,568 | 7,840 | 81/105/121/153 | < 1 arc-min | 240 |
| RV-320E | 3,136 | 15,680 | 81/118.5/153/192 | < 1 arc-min | 315 |
Application Fields
- Heavy-Duty Industrial Robots: J1 (Base) and J2 (Lower Arm) joints for automotive assembly and palletizing robots.
- Precision Positioners: High-capacity multi-axis rotary tables in automated welding lines.
- CNC Machine Tools: B-axis and C-axis rotary heads for 4-axis and 5-axis machining centers.
- Satellite Antenna Positioning: High-precision elevation and azimuth tracking systems.
- Large Medical Imaging: Gantry rotation for CT scanners and positioning for proton therapy systems.
Frequently Asked Questions
Q: How do you guarantee the authenticity of Nabtesco reducers?
A: We source directly through authorized Nabtesco distributors. Each unit features a unique barcode and serial number for verification via the official website or local branches.
Q: What is the main difference between RV-E and RV-C series?
A: RV-E is a solid shaft unit, while RV-C features a large hollow shaft, allowing laser beams, cables, or air hoses to pass through the center for simplified design.
Q: Do these reducers require manual lubrication?
A: Most units are shipped without lubricant. We strongly recommend filling with the specified VIGO GREASE RE0 after installation as per the official manual.
Q: What are the installation requirements for precision?
A: Requirements are very high. Flatness and perpendicularity of the mounting surface directly affect service life. Detailed installation guides are provided.
Q: Can you provide matching motor flanges?
A: Yes, we offer customized motor flanges and input gears compatible with major brands like Fanuc, Yaskawa, Siemens, and more.
Q: What is the expected service life of an RV reducer?
A: Under standard rated conditions, the L10 design life is typically 6,000 to 10,000 hours. Proper lubrication can significantly extend this duration.
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