Skip to content

CR-10 Mod - X Belt straightener - Motor Side

Creation's quality: 5.0/5 (2 votes)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

In my opinion, the Cr-10 suffer of a bad project base about the x and y belts.
All the belts of the machine aren't working in horizontal and parallel to the trolleys movement planes, but are working with inclination.
The inclination generate an error in the positioning of the X trolley (that is not possible to fix completely with the e-step calibration, because is a variable error along the stroke).
from 0 to 150 mm of traveling, the error between 0 and 0.24 mm in the Trolley positioning.
From 150 to 300 mm of traveling, the error is between 0.24 and 0.28 mm (delta is 0.04 mm, due to the belts more horizontal in the second half of the stroke (please see the attached DWG for better explanations....sorry, but for me is a little complicate to explain it in english!).

For avoid what written above, I create a bracket with a double bearing wheel that allow the belt to work in horizontal position, obtaining a significant reduction of the machine traveling error, and making the x e-step calibration basically useless.

No further modifications are necessary for the installation of the system on the machine, only needed 2 bearings MR105 5x10x4mm or MF105ZZ and a screw m5 for fixing the bearings.

Update of 13/04/2019

Major update to match measures of the tensioner on the other end on the X bridge :

Replaced the Bearings with a Idler pulley GT2 16T as per the tensioner.

Needed a M3 screw L= 25 mm

Will also be the last revision for now.

Update of 30/08/2019

Added version with oversized fixing holes, due to a user request.
Holes are dia 6mm against the 5.5 of the "standard" version.
I didn't try this version by myself, so, beware!




  • 3D file format: STL
  • Publication date: 2020/02/06 at 15:22





Best sellers of the category Tool

Add a comment

Would you like to support Cults?

You like Cults and you want to help us continue the adventure independently? Please note that we are a small team of 3 people, therefore it is very simple to support us to maintain the activity and create future developments. Here are 4 solutions accessible to all:

  • ADVERTISING: Disable your AdBlock banner blocker and click on our banner ads.

  • AFFILIATION: Make your purchases online by clicking on our affiliate links here Amazon or Aliexpress.

  • DONATE: If you want, you can make a donation via PayPal here.

  • WORD OF MOUTH: Invite your friends to come, discover the platform and the magnificent 3D files shared by the community!