# What the heck is mnm? (in relation to stepper motors.)

Posted by Caliber Mengsk
 What the heck is mnm? (in relation to stepper motors.) September 16, 2010 07:39PM Registered: 10 years ago Posts: 11
I understand it's a measurement, just like g/cm or oz/in, but I can't find anything on what mnm is, nor how to convert it to something like g/cm. Any help on this?
 Re: What the heck is mnm? (in relation to stepper motors.) September 16, 2010 09:13PM Registered: 11 years ago Posts: 149
I'm guessing it's actually mNm. I'm guessing that stands for milli-Newton-meters. If I'm correct, you convert to mNm to Nm by multiplying by 1000.

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 Re: What the heck is mnm? (in relation to stepper motors.) September 17, 2010 01:22AM Registered: 13 years ago Posts: 1,094
yep, mNm is milli newton meters. g.cm and oz.in are technically incorrect torque measurements because they refer to weight rather than mass, but if you understand that they're usable enough in conjunction with G=9.8m/s^2.

google calculator is great for pushing units and measurements around.. eg 1400 millinewton meters / (9.8 meters per (second ^ 2)) in kilogram centimeters, and it'll just give search results instead of a numerical result if you messed up somewhere and the units don't match

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 Re: What the heck is mnm? (in relation to stepper motors.) September 17, 2010 03:46AM Admin Registered: 13 years ago Posts: 13,163
... it's common to specify the torque of big/strong steppers in Nm (my CNC-mill-steppers have 1.1Nm, my strongest motors have 4Nm), while the weaker NEMA17 and NEMA14 motors are often specified in mNm ... i have some NEMA17-steppers specified with 260mNm, what's the same as 0.26Nm, so they are 4 times lower in torque than needed for the CNC-mill ...

Viktor
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 Re: What the heck is mnm? (in relation to stepper motors.) December 28, 2017 12:25AM Registered: 3 years ago Posts: 1
Yes, It should be milli-Newton-meters, one-thousandth of moment units (Nm).

Edited 1 time(s). Last edit at 12/28/2017 12:26AM by lilyliu.
 Re: What the heck is mnm? (in relation to stepper motors.) December 28, 2017 02:42AM Admin Registered: 13 years ago Posts: 13,163
... nekroposting or spamming?

Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]
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