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Adjustable Y belt tensioner

by RobPRINT, published

Adjustable Y belt tensioner by RobPRINT Oct 26, 2012

Description

Fast, simple and easy Y belt tensioner! No bushings, springs or multiple parts, just one part easy to mount :)

Recent Comments

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I installed this without even needing the screw/bolt to clamp it on the crossmember threaded rod. I thought it would fall off eventually, but it's still there. My belt is very loose, but this is making the y-travel accurate enough to make another Y-belt tensioner that will put more tension on the belt.
yes, it does, but very, very slowly. I'll upload second version of this thing which now includes bearing
Doesn't this slowly eat through the belt? There is a reason they use roller bearings where the belt raps round the frame.

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Instructions

  1. Print the part
  2. Mount on the rod on the half way between Y motor and roller.
  3. Adjust belt tension with the inclination of your tensioner in respect to the ground
  4. Tighten with M3x20 screw and nut with washer.

Enjoy!

I installed this without even needing the screw/bolt to clamp it on the crossmember threaded rod. I thought it would fall off eventually, but it's still there. My belt is very loose, but this is making the y-travel accurate enough to make another Y-belt tensioner that will put more tension on the belt.
Doesn't this slowly eat through the belt? There is a reason they use roller bearings where the belt raps round the frame.
yes, it does, but very, very slowly. I'll upload second version of this thing which now includes bearing
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