Recent content by malek340

Yup. It's better if it's transparent. So the acrylic piece of 25mm thickness would do the job? As for the motor speed, it's not that high.

I am wandering if acrylic piece of 25mm thickness would be strong enough to be used as shaft walls that has 15kg radial force acting on it. If it's not, what material is the best to be used? For those who don't understand or want to know more, look at my picture.

This is my object specifications Mass of object= 18kg Mass of load=10kg Target tension(t)=4kg So this is what he mentioned, the total mass of the object, together with the load of 10kg, would be 32kg(18+10+4). So he assumed that 32kcm^3 of air would make it float with 4kg lift/tension...

T would be the tension of object floating in water

I believe that T=PV-M. P is density of fluid surrounding the object, v is volume of object and M is the mass of object. So i have this object which is able to float due to air trapped inside it. This object is able to carry an extra load of 10 kg. So my formula would be, T= [p*(vol of...

What is the formula of the velocity and time taken of an object faling in water? I have the mass, the density, the volume of the object and the height distance of the falling object. I know that the drag force is included in the formula but i have idea how to calculate it. So anyone knows this?

I have no idea how to calculate the bushing load which is stated in catalogues in unit N/mm^2 and KgF/cm^2. Anyone knows how?

I just recently found out about polyacetal bushing but am not too sure yet. Any thoughts?

Shaft and bushing underwater Recently i found a polyacetal bushing from Misumi and planning to use it for my underwater application(please do tell me if it can't be use when submerged in sea water). I'm planning to a attach it to a stainless steel shaft which will be rotated by a motor. Do u...

I'm seriously becoming desperate. I need a bushing or bearing that is able to work without sealing it. Is there really nothing that can work underwater just like that?

Is there a known bearing that is made up from stainless steel 316? Btw bearings needs oil to be lubricated..So is it impossible to place it under sea water? Is there a way to use bearings underwater

But won't stainless steel still rust that fast? I resesrched and found that it still rust. My application would be using a bearing or bushing that is attached to a shaft for a motor tp run underwater. The equipments will be placed underwater for quite a long time

I'm currently finding a bearing or bushings that can work underwater without a housing with minimal rust. Do anyone have an idea if it can? If there is, pls give me the details of the bearings or bushings?

I believe that the way to calculate buoyancy is buoyancy force-weight of object= upward force, which is PVg-mg= upward force. If I'm wrong please tell me. I set a target of 147N(15kg) upward force for my project product. Is it that strong? Give me your thoughts.

The blue strips is actually the base of the cylinder that i highlighted. I want a flat board(not in the picture) to be tighted and fastened on the base without the use of any scew and can be disassembled/taken out easily.