Genmitsu LE5040 User manual
Laser Rotary Roller Engraving Module
User Guide
Genmitsu
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Overview
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: 5KG
7. Dimensions: 270 x 145 x 65mm
Note: The front roller is a fixed roller and cannot be moved, only the rear roller can
be adjusted.
Adjustable Range 30-90mm
270 mm
15 mm
147 mm
65 mm
Non-adjustable
Adjustable
Ø12.00 mm
Ø12.00 mm
Tensioning Wheel
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 1 Adjust the spacing between rollers
Engraving Material
Fixed Support Shaft
Stepper Motor
Adjustable support shaft
Tensioning
Wheel
Assembly
Synchronous
belt
Fixed Bolt Fixed Bolt
Tensioning Wheel Fixed Bolt
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 2 Installation Guide using the LE5040
Laser Beam X axis direction
Supporting
Brackets
Cylinder Engraving Object Axis of Rotation
Y axis
Stepper
Motor
LE5040
Laser
Machine
1. If you do not already have LaserGRNL installed, download it from http://lasergrbl.com/
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 3 Install, Connect to and Configure LaserGRBL
Scan QR code to learn more details about how to use your
Rotary Axis for the LE5040 with LaserGRBL
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 4A Focusing your Laser with a Fixed 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.
STEP 4B Focusing your Laser with an Adjustable Focal Length
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