belt tensioner for rostock max

by barnett, published

belt tensioner for rostock max by barnett May 11, 2013
1 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag


Thing Statistics

5411Views 792Downloads Found in 3D Printer Parts


My timing belts were scooting over and rubbing against the side of the idler bearings. It wears out the belts and can make a howling sound.

The solution is to make sure the bearing is level, but I was having a hard time simultaneously tightening the screw, holding the nut, applying upward pressure to the bearing and making it perfectly level.

Others have machined solutions similar to this, or used mirror clamps. I wanted to try something I could print.

Note: On my kit, the holes in the melamine above my idler bearings are the same size as the holes for the idler bearings. I think some kits have larger holes above where the idler bearings go. If you have the larger holes there, the brackets might need to be sized differently.


Print 12 tensioner brackets and three spacers. Mine are ABS infill at 33% and they seem strong enough.

I replaced the 6-32 socket head screws holding the idler bearing with phillips head 6-32 1 3/4 inch screws because they are a bit longer. Same screws for the top brackets. The screws to pull the brackets together are 3/4 inch 6-32. My rostock max kit came with many extra washers and 6-32 lock nuts, so I'm using them.

More from 3D Printer Parts

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

This is fantastic! Will have to see if this works on my labs printer. I have a very difficult time tuning the tension and because of this the prints are skewed and sloping. Also, please could you provide some links to those additional screws/nuts ?! I am not at all wary of american conventions and sized. Would be grateful if you can help!

Again, thanks for this idea and design.


This is great, thanks