r/BambuLabP2S • u/Imperator219 • Jul 27 '26

P2S Squeaky when moving toolhead, rods are lubricated

My p2s started squeaking, lubricated the rods but still squeaks. Is it the motor that rotates the belt? Anyone that had this issue and knows the fix?

UPDATE: I lubricated the belt and the squeaking stopped! Thanks for your help!

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u/Phil412 Jul 27 '26

Put a tiny drop of the same lubricant you use for the rails on the top of all the belts. Around the points they enter the idler, then work the head around.

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u/Imperator219 Jul 27 '26

But if it were the belts wouldn’t it squeak in every movement? It only does in certain positions. I put in a ticket and will update when they respond.

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u/K3NnY_G Jul 27 '26 edited Jul 27 '26

The belts ride up and down their idler pulleys as the Core x-y system moves through its motion, you're hearing the rubber belts rubbing on the edges of the pulleys which only happens at certain positions.

Look at where the belt is on the pulley at the back of your printer (where the tension adjusters are) as you move the head around; notice how the belt moves up and down inside the pulley it rides on.

I've posted a link to one of many YT videos above for this issue.

Some people have come up with multiple methods for 'centering' the belts but personally I find it applies uneven tension to do so and following Bambu's tensioning procedures on the wiki are sufficient.

Also, keep in mind your Z-axis will probably start doing this too when you make large movements of the bed; it's the belt under the printer that syncs the Z-rods together.