Basics of How Hydraulics Work | How do Hydraulic Machines Work?

Today we're combining heavy equipment with Bill Nye by tackling the basics of how hydraulics work!
I'll answer the question of how do hydraulic machines work in a very high level way.
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[@relitzcc6049]

I loved this, I definitely learned a lot of technical details that explain what I understand from my experience in a machine so far. 👍

[@DieselandIron]

Glad to help! Let me know if you've got more questions and I'll try to get some answers for you.

[@tedfisk1211]

Easy to understand. Thanks

[@DieselandIron]

Glad it was helpful!

[@cliffmathew]

Excellent demo

[@DieselandIron]

Glad it was helpful!

[@ConstructionMachineryChannel]

Good demonstration of hydraulics. Easy to understand 👍🏻

[@DieselandIron]

Thank you!

[@toma0000]

This was the explain easiest to understand how the hydraulic system works.Thank you!

[@DieselandIron]

Glad it was helpful, thanks for watching!

[@maxque2841]

I’m a staff engineer for a geotechnical consultant and these videos are just amazing. I’m glad to learn how this equipment (that I’m seeing in the field) works from a hands-on perspective. This is definitely making me a better engineer. You learn all of this stuff conceptually in school, but they never teach you what it looks like in real life. You have a new fan… subbed!

[@DieselandIron]

Glad the videos have been helpful, thanks for the support and for subscribing!

[@Maximilian_1]

Hi, I've just started working with mobile cranes, and I'm trying to get my head around the basics of how they work, this video was super helpful to understand hydraulics and from my understanding that's mostly what mobile cranes will use for most of their movements. I've had one operator though mention that he needs to wait to get air up to start work once, this was an older crane that had air leaks but I'm wondering where the air comes in if they are mostly hydraulic? It was already set up in position as well so not related to driving it on the road. For added context it's a 10T bubble crane from Kato, roughly 20 years old I believe.

[@DieselandIron]

I don't know for sure but I know a lot of machines will use an air system alongside hydraulic components for certain things. Maybe a slew brake? It could be other systems not related to the actual lifting mechanisms (aka, an offroad crane would need air for the brake system but not for actual lifting).

[@Big.Ron1]

Hydraulics in the real world is the controlled use of a pressurized non-compressable fluid to do work. Like a jet engine hydraulics is a simple concept, it is the components are what makes it complex and hard to understand. I learned hydraulics and pneumatics in the aviation world. Construction equipment and aircraft hydraulics works exactly the same. Watch this as he is 100% correct.

[@DieselandIron]

Thanks for watching brother!

[@aceventura3935]

Wow great channel , just stummbled on it a bit ago and very useful information , much respect to you for taking the time to do these

[@DieselandIron]

Thanks for watching and for the support brother!

[@billp5793]

Very easy to understand, very well done video...Thank you

[@DieselandIron]

Thanks Bill!

[@gibsonlandscapeconstructio7984]

Good demonstration!! Got my new diesel & iron hat in the mail today. Really nice quality. I love it!! Keep the vids coming brother

[@DieselandIron]

Thanks James! I really appreciate all the love brother!

[@gibsonlandscapeconstructio7984]

@@DieselandIron No problem!! Awesome live last night!! Marked the 24th@7:30 on my calendar

[@kingjenkins2878]

So easy to understand, thanks alot 👌👍

[@DieselandIron]

Thanks for watching!

[@DIRT-BOSS]

Awesome video 👍🏼 Good to know about the Kobelco electric swing motor 💪🏼

[@DieselandIron]

Thank you! Ya, that kobelco is sweet

[@EmpyreanLightASMR]

Amazing video. 6:28 This is the part I was confused about because another video completely omitted to mention this. So pressure on the rod side works because the fluid on the piston side is, in fact, returning to the main reservoir. Was sooo confused up until now haha.

[@DieselandIron]

Correct. You have to relieve the force on one side of the piston to allow movement of the rod. Now that you think you've got an understanding of hydraulic systems, engineers complicate this like on the new Hitachi machines. Oil on its way back to the reservoir is actually diverted into other cylinders to help boost the speed of other functions. These new machines have extremely complicated hydraulic systems compared to what I've shown here. Fun stuff!

[@EmpyreanLightASMR]

@@DieselandIron That's actually very efficient and practical of them and hadn't even occurred to me. Man, oil must be going all over the place lol

[@tedzone5544]

Thanks for the video

[@fiskrond9212]

I'm doing some research before buying an RC metal/hydraulic self-build excavator kit... thankyou for explaining and demonstrating in a way I can understand!

[@DieselandIron]

That would be a really fun project! Let me know if you have any questions on hydraulic systems

[@ruslanleoleoleo9505]

what types of hydraulic pump used

[@michaelpark5439]

This was such an excellent breakdown

[@DieselandIron]

Thank you! I appreciate that

[@lucindagalloway3316]

Great video

[@dirty.diggers]

Awesome video! I’m a huge fan of the pilot controls myself lol something I don’t like about EH feels like your separate from the machine someway. With pilot it really makes it feel like your in tune with the machine and sense everything you need to adjust to work the best.

[@DieselandIron]

Thanks man! I 100% agree with you on the EH controls. I have legitimately had to relearn a couple pieces of equipment because my feel was gone. Once I got used to where my brain was getting its information from I was alright but like you said, you still don't feel "in tune" with the machine like you did with a pilot system.

[@ghostgate82]

The human body is the most complex hydraulic system ever conceived.

[@ShootLuckGaming]

13:15 , Best comparison to mechanical valve is motor grader, They still have options for levers and you can actually see the linkages and its kind of easy to picture what mechanical is

[@DieselandIron]

Great point! Thanks for chiming in!

[@jimmyroberson6350]

Well said professor ..... 👍

[@DieselandIron]

Thanks Jimmy!

[@Pretzel114]

Fantastic representation! Thank you!

[@DieselandIron]

Thanks for the feedback! Let me know if there's something you'd like to see.

[@Pretzel114]

@@DieselandIron sure will, thank you.

[@dr.patnesbitt]

Great way to explain things....

[@DieselandIron]

Thanks brother!

[@Adhithya1002]

Very intuitive, thanks sir

[@DieselandIron]

Thanks for watching!

[@egg5364]

Really, really good video mate. Well done and thank you

[@DieselandIron]

Thanks for watching! I appreciate the comment!

[@juanvelasquez9114]

thank you for the video! hydraulics is awesome!

[@DieselandIron]

Thanks for watching!

[@holulu777]

Good explanations, thank you. What kind of microphone do you use ?

[@DieselandIron]

Thank you! I have a Deity 2S shotgun mic for these videos.

[@RC-Heli835]

On the pilot control systems how much pressure is generally on the controls before moving them?

[@DieselandIron]

I honestly couldn't say. That's a good question for a diesel tech

[@comehereshipmate]

wow thanks for the info!! i needed this because im working on helicopters

[@DieselandIron]

Awesome! Happy I could help out!

[@zachary0526]

Genius!

[@DieselandIron]

Thanks for watching!

[@jeangeara4584]

I really appreciate

[@DieselandIron]

You got it!

[@cobraadventures9907]

It’s super easy to understand! I just wanted to know what valves you were using and where I can buy them?

[@DieselandIron]

The syringes I was using can be found at your local Walmart or pharmacy for free. Go up to the counter and ask for some syringes and they will give you some. The larger syringe and the manifold can be found on Amazon. Here's a link to a manifold: www.amazon.com/QMseller-Stainless-Aquarium-Splitter-Control/dp/B07PFPPFDK/ref=sr_1_8?keywords=aquarium+air+manifold&qid=1648217673&sprefix=aquarium+air+man%2Caps%2C112&sr=8-8 They have a ton of options when it comes to size and number of valves. Thanks for watching!

[@lescardy74]

Hi Im looking to alter a hydrauic function on my mini digger and wondered if you would possibly help reading a hydraulic schematic for my machine?

[@DieselandIron]

I am not going to be much help. I would suggest calling up to your dealership and having one of the tech's help you out.

[@EmpyreanLightASMR]

You explain in a comment below why oil is used over water, which is wonderful. Ok, one thing I'd like to know is how hydraulic fluid is put in and then air pumped out (or how is air not put in at all)?

[@DieselandIron]

You don't pump any air out of the system. If you pop open the side panel on a good sized excavator you will have a good idea of how the hydraulic system works. You have a tank that holds a good amount of hydraulic fluid, far more than the system needs during normal operation. This serves two purposes. One, it takes away the issue of having to pump air out of the system to have pure hydraulic oil and two, it helps cool the fluid by shear volume. If you look at the hydraulic feed line to the pump you will notice it draws off of the bottom of the tank. The hydraulic tank at any given time shouldn't fall below half full when running. This means that even with all of the slope work and sloshing, the pump is only pulling in hydraulic oil, no air. Hydraulic oil has additives in it to keep it from getting frothy and picking up lots of air bubbles. Are there still some tiny bubbles that get pulled through the system? Sure, but they are tiny enough they don't cause issues to the system and the operation of the machine. Hope that answers your question!

[@EmpyreanLightASMR]

@@DieselandIron It absolutely does! Which gave me another question: is the pump the actual machine creating the force that moves the oil? If so, can the pump create different levels of force then? Or is the pump diverting oil into another machine that creates the force required to move parts? In other words, in your video, your thumb pushes down on the syringe. Is your thumb the pump? Or your thumb a separate machine using oil that was pumped into its main chamber? I'm just super curious. I happen to be studying fluid statics in a physics class and outside was a hydraulic lift lifting painters all over the top of the building and I decided to google this stuff. Your answers are incredible, so thank you again!

[@thiagoene]

One thing I never understood in hydraulic systems and never found a good explanation: you have to push a piston, which will push the liquid and move another piston or mechanism on the other hand, correct? Why not just use the power to move the part you want to move in the first place? Something still needs to produce the energy and force to push the original piston down, so are you not just transferring energy from one site to another? Dumb question I’m sure 🙂

[@DieselandIron]

Adding this question to my list of ideas for a Down & Dirty topic. Due to lack of time, I'm starting to take consulting calls on the side. If you'd be interested in that, shoot me a message at [e-mail]. Thanks for the support brother!

[@JordanR27]

Yes you are right, you are transferring energy from one site to another. However it's the efficiency of power used to move the object is what matters. Hydraulics takes a pump(small piston) that takes lower power to move and amplifies said power through the pressure the system creates, thus moving the load(large piston). So the more pressure you give the system, the higher the force you get, or the heavier load you can lift. Basically, you gain a mechanical advantage, just like adding multiple pulleys to your lifting device. One part line takes a lot of force to lift an object, but the more pulleys you add, the less force it takes to lift that same object. So you now have a more energy efficient means of moving said object.

[@Vegasman77704]

loved your video keeps things super simple, fyi waters non compressable

[@DieselandIron]

Thanks Chris! You are correct, water is non compressible but the reason we don't use it in hydraulic systems is for a couple reasons. First, the fluid gets hot enough that you have the potential for steam which is compressible. The second you have steam in the system you lose all your power. Second, water doesn't lubricate the pump like hydraulic oil. Finally, water rusts metal...which happens to be what a lot of the hydraulic components are made out of. By using oil we protect the system from corrosion. Thanks for the comment brother!

[@EmpyreanLightASMR]

@@DieselandIron Your comment here is a whole video on its own, glad I caught it.

[@richardghastin6685]

Born in Traverse City!

[@Filzkiiz]

YesSiRr!!😎💯💯🔥🔥👊👍!!

[@DieselandIron]

Always got my back brother! I appreciate you!

[@mrnobody.4069]

Aren't hydraulics mostly vacuum pressure based?

[@DieselandIron]

These systems use positive pressure

[@mrnobody.4069]

@@DieselandIron what systems use negative pressure?

[@herrba]

crazy how the exhaust addicts can't see the obvious pros of electric/hybrid

[@husbandssam]

Hey I have a question man!! I know it won’t be anytime soon but in the future will Construction Equipment Operators and Equipment Technicians still be around cause I’ve been reading a lot that AI and robotics will replace those jobs

[@DieselandIron]

This is a great question that I'm getting asked quite a bit. I think I'm going to do a Down and Dirty on this topic at some point due to the amount I get asked. The short answer is no, not completely. Some jobs will absolutely get replaced with autonomous machines. Rollers, dump trucks (both ADT and quarry trucks), some dozer work and other positions that don't require as much skill will absolutely get phased out. There is a large portion of the work that I don't really see getting replaced. Due to the fact that so much of our industry is based around skill and having a human brain making decisions in real time I don't see the industry dying out due to autonomous machines. Stay posted Sam, I think in the next few weeks I'll record a video on this topic to answer in a bit more detail.

[@husbandssam]

@@DieselandIron Thanks man!! And Happy New Year to you!!

[@JohnYates-n9r]

Hiya mate so I'm going to get some bits from the heard ware shop for the things I need for me to make a basic hydraulics system. Okey so will you put a list of the things that I'll have to get. Please!? & If u want to put down anything else that's I'll benefit from like tips for me then I'm really grateful for your help with this pal & when it's done then I'll let you see what it's Okey top1 bro jonboy

[@DieselandIron]

Go get some 1/8 inch tubing, a handful of syringes (you can get them free from the drugstore if you ask) and you'll need some sort of manifold. That's all I used here.

[@31acruz]

Sounds like you don't understand how hydraulics work, all you did is explain liquid dispersion, big deal a 5 year old can do that. But you never touched probably because you don't know, how a small input multiplies into a bigout put, the "leverage" aspect of it. Don't worry, all the video's on YOU TUBE don't touch that with a 10 foot pole, most so called experts don't know either, how it happens or worse yet how to explain it. Do better. Thumbs down and unsubscribe from me.

[@DieselandIron]

Wow...I didn't realize I was expected to give a college level lecture on hydraulic force multiplication...I realize you unsubscribing was supposed to be some major blow but I'm gaining over 800 subs a month. Putting up with one less entitled armchair professor makes life easier...

[@31acruz]

@@DieselandIron stop trying to hide your ignorance by amplifying your insecurity! do better!

[@osagietimo4678]

To ​@@31acruz open your own channel and go and do better

[@Darjan_Spasojevic]

Hydraulics dont exist without seals

[@DieselandIron]

#savethebabyseals

[@ronniejones8508]

Great video

[@DieselandIron]

Thanks for watching!