Search results for query: *

The oil enters the chamber in the top part of the cylinder

Hi, I have a cylinder that is only using the small chamber. When I turn on the hydraulic unit, the oil fills the small chamber and the cylinder retracts. Using a system of pulleys, an elevator cabin goes from the first floor to the second floor when the cylinder retracts. If I want the cabin to...

http://www.volcanomotor.com/products/24v_2400rpm_1hp_brushless_dc_motor-en.html What I understand from your answer is that the first method is flawed and that what I have to do is since the torque calculated from the 2nd method is Tm=6.29Nm, I have to go to the motor chart and see if a certain...

Hi everyone, Im trying to select an appropriate dc brushless motor to design a Power Soccer wheelchair. I already did my calculations, but I did it 2 ways and my answers are not the same. Please help. Here is the design problem: I have the "cart" weighs 150 kg and has to be able to have 150 kg...

I am designing a dumbwaiter that will be used to transport food supplies 6 meters vertically into a third floor. Im planning to use an electric winch to do this. However, the winch has a work rate of 20% at 10 mins, so its able to work for 2 mins before having to rest 8 mins. It takes 36 secs...

Hey guys, just bringing you an update. We ended up not having to change the hoses. After we replaced the tank and fill it with hydraulic oil, we tested and the right cylinder was not extending. It turns out the cylinder chamber that isnt being used had a leak in the o-ring/seals. Additionally...

Thanks akkaman! that test is really useful, i hadnt thought of that! I had also thought of adding the needle valve, thanks for the suggestion!

We found there were aditional issues with the system. The plastic tank of the hydraulic unit was broken and was the place where oil was leaking. We believed the leak was in the hoses that we were unable to reach/inspect. We will replace the tank first, then test. If the problem persists we will...

Thanks for all the help! I really appreciate it. The ramp is actually lifted to the point its completely horizontal, then a second actuator (a garage door opener) slides the ramp inwards. Thats why it looks shorter.

Heres a picture of the ramp. Im not really sure if it would deflect the load or balance out. What do you think?

i dont know the total pressure. It must be close to 270 psi by measuring the time it takes for the cylinders to fill up, the volume of the cylinders and the 3/4 hp hydraulic unit used and solving for the pressure using a 70% efficiency. The flow rate is about 4.25 gpm using the same time and...

I have 2 hydraulic cylinders that work in parallel to lift a steel ramp. We are replacing some old hoses that are damaged and are hard to reach. The current hoses have a tee that divides the flow right at the middle and then two hoses that have the same length go to each cylinder. But the...