---
publication_id: "OT-2026-000000843"
title: "Servo reducer"
published_at: "2026-09-15T19:03:28.673292Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000843"
categories:
  - "industrial-motion-power-transmission/rotary-motion"
keywords:
  - "f16h57/12"
  - "f16h1/20"
  - "f16h2057/02034"
  - "f16h2057/127"
  - "f16h57/021"
---

# Servo reducer

## Abstract

A servo reducer includes a motor gear connected to a driving motor, a support structure, a first-stage gear set, a first-stage shaft, a second-stage gear set, a second-stage shaft, a third-stage gear set, a third-stage shaft, and an output gear meshed with the third-stage gear set. The first-stage shaft, the second-stage shaft, and the third-stage shaft are mounted on the support structure. The first-stage gear set is mounted on the first-stage shaft and is meshed with the motor gear. The second-stage gear set is mounted on the second-stage shaft and is meshed with the first-stage gear set. The third-stage gear set is mounted on the third-stage shaft and is meshed with the second-stage gear set. When an external load exceeds an allowable limit of a gear strength, external load energy is converted into friction heat between the teeth and consumed, so no backlash is defined.