---
title: "Nabtesco RV-42N cycloidal reducer specs"
description: "Cycloidal / Premium actuator from Nabtesco (Japan). Peak torque 2060 Nm, rated 412 Nm, weight 6300 g, torque density 327 Nm/kg, price quote only."
canonical: https://actuatorlist.com/actuators/nabtesco-rv-42n
last-updated: 2026-11-01T14:05:43.000Z
---
# RV-42N (RV-N cycloidal reducer) by Nabtesco

> Cycloidal / Premium actuator from Nabtesco (Japan). Peak torque 2060 Nm, rated 412 Nm, weight 6300 g, torque density 327 Nm/kg, price quote only.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Cycloidal / Premium |
| Peak torque | 2060 Nm |
| Rated torque | 412 Nm |
| Max speed | n/a |
| Gear ratio | 141:1 |
| Weight | 6300 g |
| Torque density | 327 Nm/kg |
| Price | quote only |
| Price per Nm | n/a |
| Backdrivable | no |
| Backlash | 1 arcmin |
| Voltage | n/a |
| Peak current | n/a |
| Communication | n/a |
| Control modes | n/a |
| Encoder | n/a |
| Integrated driver | no |
| Availability | in production |
| Data status | Catalog headline specs spot-checked: confirm revision |

## Size a joint

- [Motor torque calculator](/tools/motor-torque-calculator?solve=power&t=412): **412 N·m** rated; add a speed for its shaft power.
- [Robot arm torque calculator](/tools/robot-arm-torque-calculator?L=0.4,0.35,0.12&m=1.2,0.8,0.3&a=6.3,0.5,0&p=2): **54.7 N·m** at the shoulder with its 6300 g at the elbow of a 2 kg-payload arm.

## Use cases

- industrial robot joint
- cobot joint
- heavy arm

## Notes

Nabtesco RV (Rotate Vector) two-stage cycloidal precision reducer - the gear used in the shoulder/elbow/base joints of most industrial robots (Nabtesco holds a large share of that market). This is a GEARBOX, not an integrated actuator: no motor, driver, encoder or voltage of its own (paired with a customer servomotor), hence those fields are null and integrated\_driver false. RV-42N: 412 N.m rated output torque, momentary maximum (emergency-stop) torque 5x rated (~2060 N.m), available ratios up to ~185:1 (141:1 shown), \<1 arcmin backlash, mass 6.3 kg, OD 159mm. Torque density is computed from momentary max torque over mass. Quote-only pricing.

## Sources

- [https://www.nabtesco.de/en/product/rv-42n](https://www.nabtesco.de/en/product/rv-42n)
- [https://precision.nabtesco.com/en/products/detail/RV-N](https://precision.nabtesco.com/en/products/detail/RV-N)
- [https://www.abi.nl/assets/uploads/Downloads/Aandrijvingen/Precisievertragingen/Nabtesco%20cycloide%20vertragingen/RV-N%20serie/RV-N\_Rev.9\_EN\_no\_drw\_nabtesco.pdf](https://www.abi.nl/assets/uploads/Downloads/Aandrijvingen/Precisievertragingen/Nabtesco%20cycloide%20vertragingen/RV-N%20serie/RV-N_Rev.9_EN_no_drw_nabtesco.pdf)

## Similar Cycloidal / Premium actuators

- [DM-J10010-2EC (DAMIAO (DMBots))](https://actuatorlist.com/actuators/damiao-dm-j10010-2ec): 101 Nm/kg
- [DM-J8009-2EC (DAMIAO (DMBots))](https://actuatorlist.com/actuators/damiao-dm-j8009-2ec): 44.6 Nm/kg
- [SCA QDD-Lite-NE30-36 (INNFOS (Mintasca))](https://actuatorlist.com/actuators/innfos-sca-qdd-lite-ne30-36): 43.1 Nm/kg
- [M107 Joint Motor (Unitree Robotics)](https://actuatorlist.com/actuators/unitree-m107): n/a
- [GIM8115-36 (SteadyWin)](https://actuatorlist.com/actuators/steadywin-gim8115-36): n/a

## Machine-readable

- JSON: https://actuatorlist.com/api/v1/actuators/nabtesco-rv-42n
- Catalog index for agents: https://actuatorlist.com/llms.txt