How To Replace The Small X Axis Belt Loop

The small X axis belt can sometimes become 'noisy' enough to warrant replacing. This is often mistaken for bearing noise.

 This noise will sounds like squeaking, growling, like a bearing. But the bearings are likely okay and no lubrication is required here. 

Here is what the noise typically sounds like:

This belt usually gets changed for that reason and not due to a critical failure. There is sometimes a spare belt in the toolbox that came with your laser.

Here is how to replace it:

Gauge the belt tension prior to beginning the process and take some pics of the assembly for reference, just in case

Loosen 4 motor mounting bolts

the 4 bolts (A) are accessed from the bottom side

Adjust tension screw to remove belt

Turn tension screw (B) counter-clockwise until there is enough slack to remove the belt

Install new belt

Remove the old belt and replace with the new one

Tighten the tension adjustment screw.

Adjust the tension screw clockwise until the belt is properly tensioned

Tighten the 4 motor bolts

Tighten the 4 motor screws to lock it down

• Related Articles

• Example of Belt wear on a Thunder Laser Nova Series Machine

  Preface: This article covers what worn belts may look like on your Nova series machine. Odometer Reading: Using Lightburn's "Get Controller information" we can take a peak at the odometer of the machine. The Nova 51 has over 5000 hours of movement ...

• How to Replace a Nova Z Axis belt

  Preface: This article is basically a copy paste of the attached PDF that covers how to replace the Z axis belt on your Nova series laser. It is currently a work in progress. This work should be performed with the machine powered off and unplugged. ...

• How to replace the Long X Axis belt

• Y Axis Motion Noise

  When you move laser head front and back, two couplings make a lot of noise. Both sides of transmission shaft are not aligned. How to fix it? 1.Turn off the whole machine power. 2.Take out the belt by taking down the motor. Loosen three screws A ...

• NOVA series How To replace the 24VDC Controls Power Supply

  This article covers how to replace the 24V Power supply that powers the controls for your NOVA machine. Note that this was done on a NOVA35. Larger Machines like the NOVA63 will have this Power Supply by it self not hidden by the 36V power supply. ...