About

About RV-N Series

Nabtesco RV-N is a family of compact cycloidal reduction-gear component sets with solid output shafts and integrated main bearings. It converts motor speed into high-torque precision motion for industrial robot joints and positioning axes. Reinforced eccentric-shaft bearings and an integrated bearing inner ring support compact packaging, while the distributed cycloidal contact withstands shock loads up to five times rated torque.

The named RV-N sizes span 245 to 28,000 Nm rated torque and 3.8 to 544 kg mass, so a particular size must be selected for the axis load and motion cycle. Hysteresis loss is below one arc-minute for the listed smaller sizes and below two arc-minutes for RV-2800N. The component set is integrated with a customer’s motor, input gearing and supporting structure; servomotor selection and service-life calculations remain application-specific.

Hysteresis Loss: <1 arcmin for listed smaller sizes; <2 arcmin for RV-2800N
Rated Torque Range: 245 to 28,000 Nm
Maximum Efficiency: ≤85%
Weight Range: 3.8 to 544 kg
Permissible Acceleration Torque Range: 612 to 70,000 Nm
Shock Load Capacity: ≤5 times rated torque
RV-25N - Weight: 3.8 kg - Rated Torque: 245 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 1,225 Nm - Permissible Acceleration Torque: 612 Nm
RV-42N - Weight: 6.3 kg - Rated Torque: 412 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 2,058 Nm - Permissible Acceleration Torque: 1,029 Nm
RV-60N - Weight: 8.9 kg - Rated Torque: 600 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 3000 Nm - Permissible Acceleration Torque: 1500 Nm
RV-80N - Weight: 9.3 kg - Rated Torque: 784 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 3,920 Nm - Permissible Acceleration Torque: 1,960 Nm
RV-100N - Weight: 13 kg - Rated Torque: 1000 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 5000 Nm - Permissible Acceleration Torque: 2500 Nm
RV-125N - Weight: 13.9 kg - Rated Torque: 1,225 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 6,125 Nm - Permissible Acceleration Torque: 3,062 Nm
RV-160N - Weight: 22.1 kg - Rated Torque: 1600 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 8000 Nm - Permissible Acceleration Torque: 4000 Nm
RV-380N - Weight: 44 kg - Rated Torque: 3724 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 18620 Nm - Permissible Acceleration Torque: 9310 Nm
RV-500N - Weight: 57.2 kg - Rated Torque: 4,900 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 24,500 Nm - Permissible Acceleration Torque: 12,250 Nm
RV-700N - Weight: 102 kg - Rated Torque: 7000 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 35000 Nm - Permissible Acceleration Torque: 17500 Nm
RV-900N - Weight: 157 kg - Rated Torque: 9000 Nm - Hysteresis Loss: <1.0 arcmin - Emergency Stop Torque: 45000 Nm - Permissible Acceleration Torque: 22500 Nm
RV-2800N - Weight: 544 kg - Rated Torque: 28,000 Nm - Hysteresis Loss: <2.0 arcmin - Emergency Stop Torque: 140,000 Nm - Permissible Acceleration Torque: 70,000 Nm

Resources

Curated durable documents and official technical references.

RV-N product catalogue
PDF · RV-N family · Nabtesco Precision Europe
Source

Context

Market context

Compact solid-shaft cycloidal reducer family for high-torque, low-backlash robotic and positioning axes.

Target environment: Industrial robots, machine tools, medical equipment, packaging machinery and heavy positioning systems
Workflow context: Robot-joint reduction, precision positioning, load handling and high-shock-load transmission
Customer context: Robot and machinery OEMs selecting a reducer across a broad torque range while retaining compact joint packaging.
Deployment model: Commercial component-set family with multiple sizes, CAD data, manuals and application support.
Commercial maturity: Commercial series spanning rated torques from 245 Nm to 28,000 Nm with current technical documentation.
Adoption constraints: Selection depends on torque and shock loads, reduction ratio, bearing loads, stiffness, mounting, lubrication, duty cycle and integration tolerances.
Adjacent products: Nabtesco RV-C and RD families, strain-wave reducers and planetary robot-joint gearboxes

Comparable Systems

RV-E Precision Reduction Gear Series
Nabtesco - Component Family