Ray5 mini/miniS Timing Belt Replacement

The timing belt is a key component responsible for transmitting motion between the motor and the X/Y axes. Over time, belts can wear out, loosen, or break, leading to issues such as inaccurate positioning, skipped steps, or uneven engraving.

Replacing the timing belt ensures smooth motion, precise alignment, and consistent engraving quality on your Ray5 mini/miniS.

1. Remove the Laser Module

• Disconnect the laser cable
• Loosen the M3×14 screws or L-shaped hand screws
• Remove the laser module

Ray5 mini/miniS 2.5/3.5W

Ray5 mini/miniS 5.5/10W

2. Remove the Top Cover (Ray5 miniS only)

• Remove the top acrylic cover
• Unscrew 12 screws to access internal components

Top acrylic cover

3. Remove the Slider Components

• Use a 2mm hex wrench to loosen the four screws
• Remove:
  • Slider plastic part (mini)
  • Metal slider with plastic part (miniS)

Ray5 mini/miniS 2.5/3.5W 

Ray5 mini/miniS 5.5/10W

4. Remove the Timing Belt

• Use a hex wrench to loosen the screws securing both axes:
  • X-axis: 2 screws
  • Y-axis: 4 screws (2 front + 2 rear)
• Carefully remove the timing belt

⚠️ Important:

• Do not miss the T-slot screws that secure the belt

5. Install the New Timing Belt

• Thread the new belt through the pulleys and connecting shaft in order
• Ensure the belt is properly seated on the shaft

💡 Tip:

• Use a screwdriver to guide the belt
• Slightly move pulleys left and right to help the belt pass smoothly

6. Tension and Secure the Belt

• Insert one T-slot screw into the profile along the X-axis
• Press the belt onto the screw and tighten it
• Pull the belt tight on the opposite side
• Insert the second T-slot screw and tighten

Check after installation:

• The belt should have proper elasticity
• Pulleys should move smoothly without sticking

7. Reinstall Components

• Reinstall the slider and plastic parts
• For Ray5 miniS, reinstall the top acrylic cover

 Mini：

MiniS：

Conclusion

Replacing the timing belt on the Ray5 mini/miniS is essential for maintaining precise motion control and high engraving accuracy. Proper installation ensures smooth operation, reduces mechanical errors, and extends the lifespan of the machine.

Regular inspection and timely replacement of the timing belt will help maintain consistent performance and reliable engraving results.