Hello forum,
I hope you're doing well.
I need your help here I am looking for wheels that can carry tubes from one to 20 tons in aquatic environments (freshwater).
The wheels should not be submerged except in the case of raw water with a rotation 24 hours over 365 days.
If you have leads, contacts, it would be cool.
May the force be with you.
ps/ who will be in PARIS on 12/10?
Hello @OBI WAN
On coronovabien
Just a few questions:
What diameter is the wheel?
To hold the tubes one might think that there are two parallel wheels each holding one end of the tubes. What about?
Does the wheel tube assembly rotate at more than 10 rpm
Kind regards
Hello@Zozo_mp good to see that you are well.
I can't say too much, sorry, very hot project.
the wheels are Ø 250 and 200 but that's modifiable.
There are several wheels 4 below + 2 above.
The speed is variable from 30 to 50 rpm
I have already contacted manufacturers who explain to me that Teflon wheels and 304 stainless steel bearings should do it but he estimates the life of the bearing at 1 year max, it's too fair.
may the force be with you.
Hello @OBI WAN
It lacks a bit of an element to answer you so I'll do this to you at the filling not seeing or an experienced guy like you can have problems ;-) ;-) ;-)
Boat propellers (sea or freshwater) are interesting cases, especially with regard to the bearing and the gland that ensures watertightness. Thus the wheel (which is in my example the propeller) can be either semi-submerged or totally submerged without the bronze bearing being in contact with the water. You also have the different types of rotary joints
Kind regards
PS: tell me in PM where your pb is if my suggestion fell by the wayside ;-)
Hello OBI WAN,
Attached, the reflections that your message inspires in me, on the basis of an imaginary model.
All this while ignoring the problem of immersion.
Kind regards...
Thank you very much for your participation, good job.
Your imagination worked well, this is exactly my case with the type of wheels I use.
The sizing and well my concern is not the mechanical resistance but the resistance over time of the ball bearing in humid environments.
Blickle tells me that gpso type wheels equipped with 304 stainless steel bearings will have a screw life of one year, I would like to increase this duration my rotating element will be 15t (Ø3m x6m) it may be complicated for maintenance and expensive.
may the force be with you.
It is certain that stainless steel bearings are less efficient than standard bearings from the point of view of their resistance, and therefore their lifespan at the same load.
That being said, operating in a humid environment does not mean operating in immersion.
If I use the analogy with a heavy goods vehicle, the operating constraints seem similar (load values, speed, humid environment, etc.), and to my knowledge, although heavy goods vehicle bearings are special in their geometry, they are not stainless steel... They are simply effectively protected and lubricated.
Perhaps we should explore a track of this type, with protected wheel guides.
As far as the manufacturer Blickle is concerned, the maximum effort information it provides corresponds to quasi-static operation, which is probably the case in the majority of applications, especially under heavy load. This is confirmed by consulting the static load capacity values of the bearings used for the guide. This explains the rather short lifespan if you operate close to this limit.
On the loom the work, you must... 
interesting lead.
abandoned the commercial parts to make custom wheels with spinnaker seal to seal everything.
I'll dig deeper.
Thank you for your intervention.
may the force be with you.