Roller bearing construction

Bounty: $4.80

Posted By: HelpIdentify
Listed: March 09, 2020 Ends: June 07, 2020

I'd Like to Know:

would like to know what these are, and what they used for, please provide a reference to the same

Item History: none

Size: 2-3/8"

Markings: bearing: S6304RS


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Bearings

References:

https://www.amazon.com/6304-2RS-Bearing-20x52x15-Sealed-Bearings/dp/B002BBI8P0

By: Chemists

Submitted on: 01/05/2018 at 08:35AM
Rejected

Reason:
Thank you for your opinion, but I am looking for what is the whole bearing construction that is pictured is called and what it is used for.