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May be you right. And It can suitable for my need. I have one more question What about hall effect sensors? Can they measure micro movements? I should put it in maximum 10x10mm space.

The auttocube sensors are looks good, but they are too big. Do u khow smaller one? Something like a board module?

Hi I'm looking for a high accurate distance sensor to detect very low movements. (0.1 to 200 micrometer). It can be a light sensor or anything eles. I want it to measuring very low material deflections. Do u have any idea?

Hi everyone I want to make a hydraulic vise for a tension-pressure load frame. How can I calculate needed apply hydrolic force to holding sample along test?

This is the answer that I was looking for. So there is no way to eliminate vibeartion totally. It seems l have to use high precision series of ball bearings. This project is prototype and I don't know the the allowed limit of vibration yet. Thank u and the others for your help

My question is simple HOW CAN MAKE A BEARING JOINT FOR ROTATING A SHAFT WITHOUT ANY VIBRATION? I think, i defined every thing about this, very well. The hydrostatic bearings need power pack to supply hydraulic pressure. Anyway thank u

If you don't know the solution , there is no need to post a comment. Try to find out and learn new things...

I wanted to know is there any other way for rotation without ball bearings? The ball bearings are some unsteady.(or radial/axial play as you said) It's very low but it is and preload can't remove it perfectly. I was thinking about grinding shaft and use submersible Brass bush or something like...

The weight is not matter. It is vory low. Maximum 200 grams. The vibration while moving is important. It can affect on load cell measurement.

It's a belt conveyor and does not desing yet. I prefer to use a DC motor with geabox. The speed can be variable. My problem is how to choose bearings for it? Ball bearing? needle bearing? or something else?

This mini conveyors dimention is 250x100x10 mm. The super precision means that, this is a scaling conveyor and the scale tolerance is 0.1 gram. It means that any unwanted vibration affets on scaling precision. I khow that nothing is perfect but I want to reach smooth movement as much as possible.

Hi every one I want to design a super precision mini conveyor that has no vibration while moving. The ball bearings has a little backlash that can affect on precision. whats your suggestion for it ?

Through Holiday ?! never mind ! I did it about 2 weeks ago. But I didn't find free time to post it here. unfortunately, I haven't picture right now,but I can share new cage model picture. Happy new year

Hi everyone Finally I could overcome the problem with these steps : 1) Decrase cylindrical bearings number and replace half of them with ball bearings. 2) Change cage material with Plexiglass. 3) Change design of bearing cage, so the bearings are in middle of cage and they can't pull out their...

By the way I have to change and replace some parts. Then try again. In this case I don't believe , the test conditions have much effect on result. Because I did my best and considered many points ,even balancing the surface before loading. Finally, I wish It will not lead to waste time and...

I'm sorry ! You right. I'm Spanish and my English language is not very well [tongue]

I used surface grinding for roller plates and now Ra is 1.6 The black pipe is a good idea. I've never heard of it. But unfortunately in this case I can't use that, because :(1)It increases layers distances. (2)It make vibration along movement that shouldn't be happen. unless I Lathing them...

I know what's your mean. The plate that putted on top of first frame is solid .In addition,I putted some added plates to distribute the load. However the uniform loading mighit not obtained. But differences are very low. In the other hand, even in this state It shouldn't lock the frame. It may...

The layers should be close to each other (about 5 mm) . because of that I can not use swivel skates,Linear guides, or something like that. Although may be the force doesn't distribute complete uniformly, but I think It shouldn't cause of full lock. Because I tried to don't let that happen. All...