# What does 150 N.M mean exactly?

1. Jul 24, 2011

### captdiverdan

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

2. Jul 24, 2011

### 256bits

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

3. Jul 24, 2011

### captdiverdan

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?

4. Jul 24, 2011

### I like Serena

Welcome to PF, captdiverdan!

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.

5. Jul 25, 2011

### captdiverdan

Thanks again for your help. This forum is excellent! What a wealth of information from individuals such as yourself.

6. Jul 25, 2011

### I like Serena

You're welcome!