270 degree thrust bearing solutions?

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Discussion Overview

The discussion revolves around the design and availability of a 270-degree thrust bearing, specifically one that features a central hole and allows for rotation. Participants explore various design considerations, potential solutions, and the feasibility of such a bearing in practical applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses a need for a thrust bearing with a central hole that allows for 270 degrees of rotation, questioning the feasibility of such a design.
  • Another participant suggests using a standard bearing with a stop to limit rotation, but raises concerns about ball retention and friction if the design is altered.
  • A different viewpoint proposes that the stop could be placed outside or inside the bearing race to prevent flexing.
  • One participant advocates for sintered bearings as a reliable solution for 270-degree thrust bearings, citing their durability and flexibility.
  • Another participant describes their own solution involving a 270-degree ring fixed between gears, indicating a departure from traditional bearing design.
  • Discussion includes considerations for multiple thrust bearings in applications like crankshafts and the idea of a non-loadbearing path for ball recirculation in thrust bearings.
  • Some participants mention the availability of specialized bearings in the market and request specific manufacturer information.
  • One participant questions the authenticity of a thrust bearing image shared, suggesting it may have been altered to show internal structure.

Areas of Agreement / Disagreement

Participants express various opinions on the design and feasibility of a 270-degree thrust bearing, with no clear consensus reached on the best approach or solution. Multiple competing views remain regarding design modifications and the practicality of existing products.

Contextual Notes

Some limitations in the discussion include assumptions about design feasibility, the need for specific dimensions, and the potential for friction in modified bearing designs. There are also unresolved questions about the availability of suitable products in the market.

Jarfi
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I need a thrust bearing, it has to be like the one in the picture as in it needs to have a hole in the middle(a circle). However all the non 360 degrees thruster bearings I googled are not circle shaped, but I need free space, it would preferably have the same diameters as the pic but just 270 degrees..

not sure if it's even possible but yeah I need something along those lines.

EDIT. It only needs to be able to rotate 45 degrees.
 

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I'm not sure I understand what you are looking for, but why not just use what is pictured with a stop at the appropriate angle?
 
etudiant said:
I'm not sure I understand what you are looking for, but why not just use what is pictured with a stop at the appropriate angle?

I don't think that'd work, say I cut 45° of the circle. the balls would fall out, and if I closed the ends so they couldn't fall out, the balls would not be able to roll forward to let the bearing top slide in a circular motion because they'd be p ushed to the ends and they'd hit the ends causing some friction, which wouldn't make a good bearing.

It's hard to explain without drawing it up in solidworks. I am not even sure if what I am asking for exists, or can be made
 
I was not thinking of having the stop on the bearings race, but either inside or outside it, whichever works.

The race has to go all around anyways, just to keep things from flexing.
 
etudiant said:
I was not thinking of having the stop on the bearings race, but either inside or outside it, whichever works.

The race has to go all around anyways, just to keep things from flexing.

And as a physicist you have reached the end of my vocabulary.
 
Thanks a lot for sharing! I think sintered bearing are best for 270 degree thrust bearing solutions...The sintering make it reliable and durable with very much flexibility!
 
What turbocharger are you working on?
 
HowlerMonkey said:
What turbocharger are you working on?

I'm not, I'm not even working on a car, I ended up creating a wholly different system in SolidWorks, I can't really call it a bearing anymore but the problem is solved regardless.
 
HarpreetS said:
Thanks a lot for sharing! I think sintered bearing are best for 270 degree thrust bearing solutions...The sintering make it reliable and durable with very much flexibility!

What I ended up doing was simply a 270 degree ring, that was fixed between gears so it could slide back and fourth.
 
  • #10
Realistically, you need at least two thrust bearings on a crankshaft. Have a buddy depress the clutch and check for endplay. If it wiggles, you have a problem.
 
  • #11
The nut used on a ballscrew recirculates the balls from one end of the nut to the other. You could do the same with a thrust bearing by having a non-loadbearing path as a ball reservoir and return path.
 
  • #12
Renukanissi said:
These type of bearing is available in market. Some of the manufacturers are specialized in this types of bearings.
Can you please provide a link to the manufacturer and a series or part number.
 
  • #13
I am not positive but You can try Thrust Air bearing. oav thrust air bearing may work well for your application, http://oavco.com/thrust.html
 
  • #14

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