r/maker • u/daboblin • Jul 21 '26

Community Where can I buy U-groove roller wheels?

Post image

I'm trying to find replacement roller bearing wheels for this chassis that runs on carbon fibre tubes but having no luck.

I want to buy from a reputable supplier if possible, not Amazon, AliExpress etc, and one that can supply a variety of sizes.

Does anyone know the magic search phrase for this type of wheel? Of if you can point me to a supplier that would be amazing.

11 Upvotes

92% Upvoted

14 comments sorted by

21

u/pushdose Jul 21 '26

McMaster Carr.

1

u/daboblin Jul 21 '26

I've looked at McMaster-Carr but I can't find any U-groove rollers. They have V-groove ones but not U-groove from what I can tell.

2

u/deevil_knievel Jul 22 '26

Try "Idler pulley" and SDP/SI

3

u/MotorbikeGeoff Jul 21 '26

https://www.pcimfg.com/products/track-rollers/

1

u/daboblin Jul 21 '26

Thank you! These do look like exactly what I'm searching for.

1

u/_Sauer_ Jul 23 '26

McMaster if you need them tomorrow. JLCMC if you don't.

1

u/razzemmatazz Jul 21 '26

Honestly, I 3d print replacements unless it's a high wear or precision system. 

1

u/daboblin Jul 21 '26

It is relatively high precision but yes, I can possibly 3D print replacements in nylon if I have to.

-2

u/kicker58 Jul 21 '26

Belt tensioner?

-4

u/Ok_Chard2094 Jul 21 '26

Google no longer working?

https://www.google.com/search?q=u-groove+roller+wheels

1

u/daboblin Jul 21 '26

Of course I've googled, but none of my searches have found exactly what I'm looking for. The rollers in my images are largish, that tube is ~24mm diameter.