What does 150 N.M mean exactly?

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Discussion Overview

The discussion centers around the meaning and implications of a torque specification of 150 N·m for a generator's drive shaft. Participants explore the conversion of this measurement to other units, such as pound-force and pound-foot torque, and clarify the relationship between force, distance, and torque in practical applications.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant seeks clarification on what a torque requirement of 150 N·m means in practical terms, particularly in relation to force applied via a torque wrench.
  • Another participant explains that 150 N·m can be achieved through various combinations of force and distance, providing examples of how to apply force at different distances from the shaft.
  • A participant questions whether 150 N·m is equivalent to approximately 110 pound-foot torque, indicating a need for clarity on unit conversions.
  • A later reply confirms that 150 N·m is indeed approximately 110 pound-foot torque and corrects a previous conversion factor mentioned in the thread.
  • There is a note on the proper notation for Newton meters, emphasizing the correct formatting as "N·m" or "N m".

Areas of Agreement / Disagreement

Participants generally agree on the conversion of 150 N·m to approximately 110 pound-foot torque, but there is some confusion regarding the initial conversion factor provided by one participant. The discussion includes varying levels of understanding and expertise among participants.

Contextual Notes

Some participants express uncertainty about unit conversions and the implications of torque in practical applications, indicating a need for further clarification on these topics.

Who May Find This Useful

This discussion may be useful for individuals seeking to understand torque specifications in engineering contexts, particularly those new to the concepts of force and torque in mechanical applications.

captdiverdan
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If I have been provided information that a generator requires a torque/force is 150N.M to turn the drive shaft, what exactly does this mean??

I used an online conversion calculator and I came up with a conversion to pound-force of 33.72. Does this mean it will take approximately 34 pounds of force, such as indicated on a torque wrench, to turn the drive shaft?

Any help would be greatly appreciated.
Thanks
 
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150 N-m
Attach a rod to the shaft sticking out 90degrees from the shaft axis.
Apply
150 Newtons of force on the rod at 1m from the shaft, or
75 Newtons at 2m, or
1 Nt at 150m, or
any combination of force and distance to give 150 n-m
 
Thanks for your help. Please consider that you are talking to a moron when it comes to this stuff. I guess my question is this;

Is 150Newton meters equivalent to approximately 110 pound-foot torque?

I want to use a piece of equipment that has the following specs- resistance force is 1.8R,and torque/force is 150N.M to turn the drive shaft.

What does this mean if you were asked to write about it in Engineering for Idiots?

Thanks for any help you can give.
 
Welcome to PF, captdiverdan! :smile:

Yes, 150Newton meters is equivalent to approximately 110 pound-foot torque.

Note that the conversion factor is not 33.72 as you wrote in the OP, but it is 1.356.
That is, 1 pound-foot torque = 1.356 Newton meter torque.
But I believe you already found this.

As a side note, this would (or should) not be written as N.M.
The proper way to write it is "N m" or "N·m". That is, with a lowercase m.
 
Thanks again for your help. This forum is excellent! What a wealth of information from individuals such as yourself.
 
You're welcome! :smile:
 

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