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What are alternative designations for 52202 bi-directional thrust bearings?

What are alternative designations for 52202 bi-directional thrust bearings?

(OP)
I need a designation with a smaller outside-diameter, but I'm having trouble tinkering with the numbers.
I keep getting bearings with the wrong bore diameter, or no results at all.

I'm currently working with 52202, which is a bi-directional thrust ball bearing with a 10mm bore diameter.
The problem is that the 52202 has a 32mm outside-diameter, which seems excessively large relative to other uni-directional thrust bearings - and is too large for me to work into my current design for this project.

Is there a different designation that will specify a bi-directional thrust ball bearing with a 10mm bore, and a smaller outside-diameter such as 18mm or 22mm? (as possible examples)
The smaller the better.

I can be flexible with the outside-diameter as well as the height - I just need to know what my options are for reducing the outside-diameter.
I cannot modify my shaft diameter, so I'm stuck with 10mm for the inside bore.

RE: What are alternative designations for 52202 bi-directional thrust bearings?

How small does the OD need to be?
What are your thrust loads, and rpm?
Is there a bearing nearby to handle radial loads ?
How are you going to lubricate it?
Can you tolerate 0.007" axial clearance?

Looks like a A regular old 7200 angular contact bearing is still a whopping 30 mm OD.
http://docs-europe.electrocomponents.com/webdocs/0...

A needle type thrust bearing could be 24 mm OD.
https://www.grainger.com/product/4ZZN4?gclid=Cj0KE...

RE: What are alternative designations for 52202 bi-directional thrust bearings?

(OP)
I should mention, this bearing is for a simplified, scaled-down mini-prototype.
I'll be using a much more sophisticated bearing system in the final product.
This prototype is just to demonstrate that the laws of physics enable my design to operate as expected.

Quote (Tmoose)

How small does the OD need to be?
As small as possible. I'll modify my design to accommodate, but the larger the OD the less effective the result will be - the larger bearing gets in the way of other important things that need the space.

Quote (Tmoose)

What are your thrust loads, and rpm?
Thrust loads might be a couple hundred lbs at the most, but shouldn't be too bad.
I've structured it so the thrust is primarily borne by other pieces of the apparatus - this bearing is just to make sure the axle stays in place for endurance testing.
RPM for my simplified prototype should never get above maybe 2K I think, maximum.

Quote (Tmoose)

Is there a bearing nearby to handle radial loads?
Yes, roller bearings handle the radial load, while allowing for the shaft to expand/contract with heat differences (since the inside races can slide).

Quote (Tmoose)

How are you going to lubricate it?
Axle grease for my simplified prototype.

Quote (Tmoose)

Can you tolerate 0.007" axial clearance?
More clearance is better, since temperature differences can be pretty extreme.
The shaft is well-stabilized by other means (centrifugal force, air pressure, radial bearings, etc.), so I can tolerate higher clearances more easily than lower clearances.

It looks like even the needle roller thrust bearings are uni-directional.
I'll probably just need to use two uni-directional thrust bearings with 18mm ODs, and place them on the axle back-to-back to make them work like a bi-directional thrust bearing.

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