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I'm looking for two track rollers or bearings that share an axis, but can roll independently of each other. Ideally, they are compact as well ($\leq 1 \text{ in}.$ diameter) and can handle a moderate load ($50 \text{ lbs}$).

I have found these Track Rollers

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But I only need one pair instead of two pairs. Also I don't know if the left side and right side roll independently.

I want be able to linearly slide two guide rails

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but also pivot them about the shared axis.

To do this, I would put one roller in one guide rail and the other roller in the other guide rail, then each guide rail would be able to slide along its own length and pivot about the shared axis. If there's another way to do this, I would like to know as well.

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    $\begingroup$ Check into the wheel for the sliding drawer. But you have to design the carriage to attach two wheels - they won't separate but would roll independently depending on how you attach the power supplies. $\endgroup$
    – r13
    Commented Jan 31, 2022 at 21:47
  • $\begingroup$ @r13 thanks, can you post a link to an example. $\endgroup$
    – joseville
    Commented Jan 31, 2022 at 22:16

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You can simply google the word "drawer wheels" to get results that fit your need. The one shown has an OD of 1 1/8".

enter image description here

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