Thanks for making this topic simple with animation. Really loved the way you explained.

This is a tremendous help! Thank you!!

Great video.Understood everything you said.

Great video! Thanks!

thanx for these videos :) can you please make video on electrohydraulics and electro pneumatics?

Thanks... I felt very easy after refering to this video....

Very interesting!

Very helpful for video.

Thank you so much

Nice information...

Thanks good information ❤❤

Thank you sir 😊😊

What is the difference between fixed displacement pump and variable displacement pump?

what set of dynamical equations can be used to determine the vaccum pressure in the chambers?

Would you have a video that explains end cushioning ?

what if you put a spring on the load to keep it against the cylinder?

Nice

the music goes hard

Hi, I need some information to connect an electro-hydraulic distributor

What is opposing load and running away load

ı wish we could see the pressure while retracting and extending between relief valfe and pump

That meter out and in is that the turtle and rabbit sign on the panel?

Do you know how to calculate the actuator's operating speed? Under loaded and unloaded conditions.

please upload video hydraulic pressure intensifier animation

Sir, you mentioned on metering out in both directions would cause a significant increase in pressure on the rod end. What it not be better to meter out the bottom end and meter in the rod end? Thank you for any information.

@bobsacamano4648

Жыл бұрын

It is very difficult to match the flow rates of two flow control valves working on both sides of a differential cylinder.

Is this open loop or closed loop system?

Great vedio🇧🇩🇧🇩

The relief valve does not function?

Excellent video, thank you for making this. On a flow control spec that i've found it shows a one directional arrow after the orifice (not 45 deg across as shown in video) perpendicular to the flow path. What is that representing?

@justiceadriel8585

2 жыл бұрын

i dont mean to be so offtopic but does someone know a way to get back into an instagram account?? I was stupid lost my login password. I love any tricks you can offer me.

@denverbrennan6418

2 жыл бұрын

@Justice Adriel Instablaster ;)

@justiceadriel8585

2 жыл бұрын

@Denver Brennan Thanks so much for your reply. I found the site on google and im trying it out atm. I see it takes a while so I will reply here later when my account password hopefully is recovered.

@justiceadriel8585

2 жыл бұрын

@Denver Brennan it did the trick and I finally got access to my account again. Im so happy! Thanks so much you saved my account!

@denverbrennan6418

2 жыл бұрын

@Justice Adriel happy to help =)

Think you too much my favourite teacher's

What software is being used in these videos? The videos are very well made 👌

@lunchboxsessions

4 жыл бұрын

Thanks! We've got some information about how we make these simulations here on our website: www.lunchboxsessions.com/help/what-software-do-you-use-to-make-the-simulations

tq sir

Dear Sir............Example Problem I have a single acting hydraulic cylinder with a stroke of 300 mm, a bore of 18 mm and a rod of 10 mm if the press weight is 10 mm on the Piston Head what is the pressure.....Please explain the calculations

Why oil should go through a check valve only, when return (meter-in), needle valve installed in parallel and it is open as well?

@bobsacamano4648

Жыл бұрын

Oil takes the path of least resistance. In this case the check valve

Hello, i have a cilinder with a simulair movement. When the cilinder is max in and I steer the cilinder out, the first movement is really fast and uncontrolled, after the first steering, it is normal speed how i set with the orifice. Is this the case because of the vacuum/cavitation?

@saleemshaikh1486

3 жыл бұрын

use restrictive valve with 4 mm hole and use counterbalance valve

can you please tell me if my Marine hydraulic crane traverse motor or slewing motor runs jerky when traversing what might be the problem with this?

@lunchboxsessions

7 жыл бұрын

I'll try to help as best I can. Half of the battle in hydraulic system troubleshooting is knowing exactly what 'normal' is. So it will definitely help if you provide even more detail about how the machine has functioned right up until recently and then what exactly you are observing now in the faulted state. You said "traverse motor OR slewing motor runs jerky when traversing" (upper case letters - mine). Does this mean that the traverse function is jerky when traversing only, and that when slewing while traversing, that it is now the slewing motor that is jerky? Are there pressure gauges on the hydraulic system ? If so, do you have any pressure reading data from before and now during the fault? - Carl

@udayanpaul8042

7 жыл бұрын

Hi tnx for reverting back! Actually the crane it self jerky while slewing the slewing motor foundation is OK. Do you think that any problems with the slewing ring or bearing ? Shall I conduct a rocking test. Or might be some other fault in the system line itself ? And none pressure gauge fitted over it.

@lunchboxsessions

7 жыл бұрын

If there is a hydraulic system schematic, please email it to info@lunchboxsessions.com. If there is no hydraulic schematic, I would recommend that you try to obtain one from the crane manufacturer, and or have a schematic made up for you. The schematic is an important tool for troubleshooting. There are a good number of possibilities for this behavior, and yes sometimes a mechanical binding fault outside of the hydraulic system, is the cause. I once had a client with a hydraulic slewing motor that would stall, and every few weeks they would continue to increase the relief valve pressure setting, well beyond the machine manufacturer's specification (very dangerous) to get the motor to turn. They believed there was a hydraulic fault. They later discovered that the slewing bearing lube system had failed. The slewing motor itself may have an internal fault. If there are cross-port relief valve between the motor ports, there may be a fault in them. The list of potential faults is long, if we are just speaking theoretically. It is difficult for me to say exactly what you should do next without specific knowledge of your machine. Is the crane manufacturer still in business? If so, you will want to get them involved. They will have safe and best practices for your next steps. If you have access to a hydraulics maintenance/troubleshooting expert who can come and help you at the site, they will most likely spend some time making sure that the hydraulic system overall is adjusted correctly (pressure control, pump controls, flow settings etc.) before diving into the specific sub-circuit for the slewing system. - Carl

Can I have the program or demo to try which you use to create and simulate your hydraulic diagrams ?

@lunchboxsessions

7 жыл бұрын

bardet hammer We built this software in-house for our own use. It is not available at this time as a user installable package. But you can certainly work the controls and pull the levers yourself when you sign up for a session at LunchBoxSessions.com. Thanks so much for your inquiry.

@karannagvekar2929

5 жыл бұрын

@@lunchboxsessions Can you send me link regarding stimulation where i can work on this?

in your example (3:57) is that a double acting valve or a single acting valve?

@lunchboxsessions

6 жыл бұрын

I'm not sure I understand your question. At 3:57 the 4 port, 3 position directional control valve has returned to it's closed center. It is centered by springs. Is that the valve you are referring to? That valve has two solenoids, one on each end. The solenoids are the valve operators and are the rectangles with the diagonal slash on each end of the valve symbol. Only one solenoid is activated at any one time.

Sir I want to learn difference between external piloting and internal piloting how to work and what is benefir.

Sir my telescopic crane boom is jerking when we getting it out or in. its smoothly coming out about 4mtters after that its start jerking (jumping). same issue in tele1 & tele2. need ur help plaza.

Sir my telescopic crane boom is jerking when we getting it out or in. its smoothly coming out about 4mtters after that its start jerking (jumping). same issue in tele1 & tele2. need ur help plzz

Vinod Habale TYME

Kavit Kadu TYME

Hindi language

very bad demonstrations no need writing onvideo