5-17 Z-Axis Belt Tension Adjustment

Description

Adjusting the belt tension ensures the belt is neither too loose nor too tight. This document explains how to adjust the Z-axis lifting platform belt in detail. If you encounter any of the following issues:

• Loud, abnormal noise when the Z-axis moves up or down
• The Z-axis gets stuck halfway
• The Z-axis lifting height is incorrect
• The Z-axis belt slips or misses teeth

…you can usually fix these by adjusting the belt tension.

＊Notice：

• If the Z-axis gets stuck or makes loud noise at high speeds, we recommend loosening the belt tension.
• If the Z-axis gets stuck or the belt slips (missing teeth), we recommend tightening the belt tension.

Applicable Firmware Version: v6.0.10

Tools Needed

• 4 mm Hex wrench

Step 1 – Power Off the Machine

Before making any adjustments, make sure the machine is completely powered off.

Step 2 – Remove the Honeycomb Board and Platform Bracket

Step 3 – Locate the Adjustment Area

Find the belt tension adjustment wheel. It is located in the lower-right area of the machine. Follow the axis of the tension adjustment wheel to locate the locking screw on the underside of the machine.

Step 4 – Adjust the Belt Tension

4-1 Loosen the locking screw

Using the 4 mm Hex wrench, slightly loosen the locking screw by about one and a half turns. There’s no need to remove it completely.

4-2 Move the tension adjustment wheel

While the locking screw is loosened, place your 4 mm Hex wrench on the screw and simultaneously push the tension adjustment wheel structure inside the machine. This allows the belt tension wheel to slide back and forth.

4-3 Tighten the locking screw

Once you’ve found the appropriate position, retighten the locking screw by 4mm hex wrench. Make sure it’s secure and won’t loosen on its own.

• Moving the tension wheel in the blue-arrow direction loosens the belt.
• Moving the tension wheel in the red-arrow direction tightens the belt.

Step 5 – Test

After adjusting, put the honeycomb board and platform bracket back in place. Be sure to run the “Z-axis Platform Speed Test” in the Hardware Settings to confirm that the lifting platform moves smoothly. If it does not operate correctly, repeat Step 4 to readjust the belt tension.

Q1. How can I check if the lifting platform is operating correctly?

When you press the “Test” button, the Z-axis lifting platform will first move to the bottom position to home. After homing, it will raise and lower once at the set speed. Throughout the homing and lifting process, watch the knob at the lower-left side of the machine to see if it rotates normally. If it does, your belt tension adjustment is correct.

Q2. Do I need to use high speed for the test?

Not necessarily. If a low-speed test works without issues, you can simply use the low-speed setting. Only if you need higher speeds (for instance, when using curved-surface engraving) do we recommend setting it to high speed.

Factors affecting Z-axis stability include motor speed, the weight on the platform, and belt tension. To maintain stability at high speeds, you’d typically reduce platform load and slightly loosen the belt tension. However, if the belt is too loose, it may skip or miss teeth during lifting. Therefore, the optimal speed and tension depend on your specific application needs.