Finemotion SHPR-20E Precision RV Reducer

MANUFACTURER DOCUMENTATION

Overview

Precision RV reducer with speed-dependent torque ratings. The catalog gives 167 Nm at 15 rpm output; its 833 Nm momentary limit must not be used as a continuous rating.

Read original manufacturer specification ↗

Published series specifications

Series ranges describe the product family. They are not interchangeable operating points.

Shaft-rotation ratios: 57 / 81 / 105 / 121 / 141 / 161
Housing-rotation ratios: 56 / 80 / 104 / 120 / 140 / 160
Rated output torque: 167 Nm at 15 rpm output
Backlash: 1 arcmin
Start / stop torque: 412 Nm
Momentary torque: 833 Nm
Mass: 4.7 kg

Design & options

Separate shaft and housing rotation ratios
Published torque-speed table
Dimensioned manufacturer drawing

Applications to discuss

Robot joints
Precision rotary axes

Model configuration table

6 source-backed configurations. Torque is in Nm, input speed in rpm and backlash in arcmin. The note preserves the rating conditions and precision grade.

Model	Ratio	Rated torque Nm	Backlash arcmin	Rated input rpm	Mounting	Rating conditions	Source
SHPR-20E	57	167	1	Not stated	Not stated	Rated at 15 rpm output; shaft rotation ratio	Original ↗
SHPR-20E	81	167	1	Not stated	Not stated	Rated at 15 rpm output; shaft rotation ratio	Original ↗
SHPR-20E	105	167	1	Not stated	Not stated	Rated at 15 rpm output; shaft rotation ratio	Original ↗
SHPR-20E	121	167	1	Not stated	Not stated	Rated at 15 rpm output; shaft rotation ratio	Original ↗
SHPR-20E	141	167	1	Not stated	Not stated	Rated at 15 rpm output; shaft rotation ratio	Original ↗
SHPR-20E	161	167	1	Not stated	Not stated	Rated at 15 rpm output; shaft rotation ratio	Original ↗

Before you specify this gearbox

General-purpose cycloidal reducers and precision RV reducers serve different requirements. Confirm the series, torsional stiffness and allowable moment loads.

Confirm continuous, peak and emergency-stop load limits separately.
Match the motor flange, shaft, mounting orientation and lubrication requirements.
Request the current drawing revision and selection calculation from the manufacturer.

Source & attribution

https://www.finemotion.com.cn/home/Index/product?id=34
Checked 2026-09-22. Image and catalog data: Finemotion.

Related products

Tailong

BXJC-C Precision Cycloidal Reducer

Tailong identifies the BXJC-C series, including BXJ22C, for robot and manipulator transmission. Its product page supplies the manufacturer image; request the exact ratio and load table for the selected size.

Named model: BXJ22C
Transmission: Precision planetary / cycloidal pinwheel
Series: BXJC-C

View specifications →

WANSHSIN

WRA Precision RV Reducer

A precision RV reducer family for robotic transmission. Catalog rows associate individual frames and ratios with rated load, overload torque and rigidity; precision grades need confirmation at order stage.

Rated load: 50–7,500 Nm across the listed family
Precision grades: P0–P2; no numeric backlash assumed
Architecture: Precision RV / cycloidal reduction

View specifications →