What is Torque? - Fastening Theory Part 1

Рет қаралды 228,586

7 жыл бұрын

www.flexibleassembly.com/
In this educational video we explore the threaded fastener, its relationship to torque, and fastener strength. What is torque? How is it measured? What loads and forces are at play within a bolted joint. How do we achieve clamp force? All these questions and more are covered in part 1 of Flexible Assembly Systems fastening theory video series. See below for a breakdown of the topics covered in this video.
The Threaded Fastener - 0:12
Fastener Strength - 1:00
4 Phases of Tightening - 1:49
What is Torque - 2:25
Nm and lbs. ft. - 4:27
Torque & Clamp Force - 5:04

Пікірлер: 35

@TravisTerrell 6 жыл бұрын

Thanks for these videos. Good explanation of torque, and part 2 really puts the concepts into perspective.

@aluj4498 6 жыл бұрын

Thanks so much, this is just what I needed. I looked every where and wiki only offered text definition of Newton Meter Nm but this picture is much easier to understand for a person with no related learning background like me...

@innocentoctave 7 жыл бұрын

Excellent video. This is the clearest short overview of torque in relation to clamping force that I have found so far on KZfaq. Looking forward to Part 2.

@FlexibleAssembly 7 жыл бұрын

Thank you! That was our goal :) We are very glad you enjoyed it.

@Firebird356 6 жыл бұрын

Brilliant video, thanks !!

@allinalljyo4514 5 жыл бұрын

fantastic, i learnt so much

@WobbleMatic 3 жыл бұрын

Super video, many thanks.

@PrashantKumar-or8bf 5 жыл бұрын

Plz solve some problems on torque.for better understanding. Knowledgeable video.great thanks

@yardlimit8695 5 жыл бұрын

i can't believe it,,,,,,,,,this is the FIRST video i have ever seen with NO negative comments and i must add my POSITIVE comment to this list too. in part 2 i hope you will cover the importance of an accurate torque wrench and the correct way to come up to the final torque on a bolt..........i have torqued bolts on many diesel engines for a lot of years and always tried to be as accurate as possible. so this video was extremely interesting to me ..........thanks very much for a GREAT video.

@FlexibleAssembly 5 жыл бұрын

Thank you! We plan on creating more videos that cover a wide range of fastening theory topics.

@SurajSahu-xh2mj 3 жыл бұрын

Great video thanks

@kanyiism 6 жыл бұрын

Nice explanation

@parfaityemele390 4 жыл бұрын

Excellent video for beginners

@FlexibleAssembly 4 жыл бұрын

Thank you!

@jsmith9049 7 жыл бұрын

This is really a well done video with a great short general explanation. Do you mind if it is used in a training environment?

@FlexibleAssembly 7 жыл бұрын

Thank you! Yes, feel free to use this video as an example for training.

@studmalexy 7 жыл бұрын

do a video on rundown torque thanks and how to calculate it?

@Floodbait_117 3 жыл бұрын

Why am I binge watch vids on the theory behind screws lol

@FlexibleAssembly 3 жыл бұрын

Because we all need to know how the world is kept together. The secret is clamp load ;)

@seannot-telling9806 6 жыл бұрын

Can you do a video on how to do torque math. Things like added and subtracted lengths and the real fun one of offsets and explain why a 90º offset does not change the torque applied to a bolt.

@FlexibleAssembly 6 жыл бұрын

Thanks for the good ideas, I will try to work these into the next video :D

@seannot-telling9806 6 жыл бұрын

I had an instructor in my helicopter portion of my A&P schooling that did a good job of explaining it. I must say I was glad to have him because he would make you do the most you that you could do by pushing you to give your best. I really liked that.

@havehalkow 3 жыл бұрын

The door torque example is clever)

@FlexibleAssembly 3 жыл бұрын

Thank you! I figure everyone has tried at least once to open a door from the "wrong side" and realized how much more force it would have required! It is definitely a good demo of how a longer moment arm creates more mechanical advantage!

@imtiazur22 4 жыл бұрын

What does a torque wrench check- tensile force, twisting force or compression force applied to a nut or bolt?

@FlexibleAssembly 4 жыл бұрын

A torque wrench is usually a device that is able to rundown a fastener to a pre-calibrated torque value. Standard torque wrenches cannot measure force, they use a spring or mechanical mechanism to apply the torque until a certain point. Fancy torque wrenches with transducers such as the Atlas Copco ST Wrench are able to measure applied torque and angle, measure residual torque and more. In order to measure compression force (or clamp load) you would need to use a force gauge between the mating surfaces being fastened together. Tensile force would be measure in a plastic/elastic deformation strain test or something similar.

@rk_travel11 4 жыл бұрын

Hello... My question is..we are using 8.8 grade bolt with size M8 M12 M16... torque also decided for this bolt M8 bolt 40 nm..M12 70nm and M16 170nm..how they decided..this torque and how they calculated this

@FlexibleAssembly 4 жыл бұрын

The max torque spec for your bolts is increasing because the surface area of the threads increase as you move up in size. An M8 doesn't have as much surface area and material as an M16 bolt, so it will fail sooner.

@mullangisaisatyavinay450 5 жыл бұрын

how can i fix the length of the movement arm arm

@FlexibleAssembly 5 жыл бұрын

To change the length of the moment arm you would need a longer "handle" in the case of a torque wrench. The farther away the force is from the object you are trying to rotate, the longer the moment arm is.