Genmitsu Laser Rotary Roller Engraving Module User Guide


1. Application: This machine can work with the LE5040 to engrave on materials with a cylindrical shape.

2. Engraving Size: Cylinder diameter 22-125mm, length 20-220mm, material length/material diameter>1.0

3. The Rollers can be set at 5 different distances, each one 15mm further than the last. The adjustable range is 30-90mm.

4. Motor: NEMA17 34mm Stepper Motor; Phase Current: 1.33A

5. Pulse Parameter Setting: 84PULSE/mm

6. Maximum Load Weight: 5 KG

7. Dimensions: 270mm*145mm*65mm

Note: The front roller is a fixed roller and cannot be moved, only the rear roller can be adjusted.

Step 1: Adjust the Spacing Between Rollers

1. Place the engraving material between the two rollers and confirm whether they are far enough apart to support your cylinder without lifting it up too high. Generally the lower the cylinder sits, the better.

2. When the distance between rollers is not correct remove the 4 fixing bolts at the left and right ends of the adjustable support shaft, and rotate the fixing bolt of the tensioner one turn counterclockwise.

3. Move the adjustable roller to adjust the distance between it and the fixed roller according to the actual situation. When the distance is appropriate, tighten the adjustable roller fixing bolts.

4. Move the tensioning wheel assembly to make the synchronizing wheel under tension, and tighten the fixing bolts.

5. Rotate one of the rollers by hand, and check whether the other roller and the synchronous wheel of the motor rotate together as one. The movement should be smooth, if it is not you may need to reduce the belt tension slightly.

Step 2: Installation Guide for Using on the LE5040

1. Place the LE5040 laser engraving machine on a flat surface, unplug the Y-axis stepper motor cable and use 4 equal height supporting brackets to raise each corner of the machine.

2. Place the rotary axis in an appropriate position on the table, and connect the machine Y axis motor cable to the rotary axis stepper motor.

3. Adjust the position of the rotary axis so that your cylinder is paralell to the X-axis and that the laser beam axis is perpendicular to the axis of the engraving object.

Note: The 4 equal height supporting brackets are not included. The height of the supporting brackets is determined by the diameter and length of the engraving object.

Step 3: Install, Connect to and Configure LaserGRBL

1. If you do not already have LaserGRNL installed, download it from here.

2. In LaserGRBL select your com port, set your baud rate to 115200 and press the connect button to the right of the baud rate value. If sucessful, console should show "grbl 1.1f"

3. There is a bar which says "type gcode here," select it, type $101=84 and hit enter.

Note: The original value of $101 is 80, you will want to change this back in the same way when not using the rotary axis.

Step 4: Focusing your Laser with a Fixed Focal Length

1. In order to bring the laser into focus with a fixed focus laser module, you will need to take the metal focusing tool and stack flat objects under the rotary axis until the distance between the laser and the cylinder is the length of the metal focusing tool.

2. Test fire your laser at a low power, 5% or less, and make sure that your laser is focused to a tiny point.

Step 5: Focusing your Laser with an Adjustable Focal Length

1. For this laser type you will need to have the laser firing while you focus your laser point on the stock cylinder. Do not fire at any more that 5% power.

2. With the laser visible, twist the round black knob at the bottom of your laser clockwise to adjust the focus of the laser. Your goal is to make the laser point as small as possible.

If you over-focus then twisting clockwise to go backwards can be used.

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