• ML-2450AH.2550AH


Handy torch type is easy to use with a lightweight!
Anyone can make the laser welding of high quality easily!

Two models which can be chosen according to the application.
It is the most suitable for precision sheet metal welding iron-based, the SUS system work.
Model : ML-2450AH / 2550AH

ML-2450AH/2550AH welders consist of our YAG laser delivering field-proven high performance and a handy torch, allowing users to laser weld manually. They do not require an output unit or the hassle of robot teaching with an XY table, etc. Since the laser light of ML-2450AH/2550AH welders is aimed in whatever direction the user moves their hand, they are ideal for tack welding and correction welding small quantities of various sheet-metal and trial products. Their maximum outputs are 150 W and 400 W. Select the model that meets your needs according to plate thickness. Their high peak power makes it possible to achieve high-speed deep penetration. ML-2450AH/2550AH welders perform stable welding under ideal welding conditions thanks to our unique power feedback control. Welds made with ML-2450AH/2550AH welders have little distortion even in thin-plate welding and have neat welding beads, thereby eliminating the need for after processes, contributing to production efficiency.



  • ◆ High-quality manual laser welding with a handy torch!
  • ◆ Welds have few heat-affected areas (distortion and burns) by making effective use of the characteristics of lasers, eliminating the need for after processes.
  • ◆ Forms neat welding beads by high-speed repeat control.
  • ◆ Welds plates with a thickness of up to 2 mm (for stainless-steel plates). (Please contact us if welding of thicker plates is required.)
  • ◆ Dual safety feature: the presence of a workpiece is detected and the laser is automatically turned off when the torch is moved away from the workpiece while welding.
  • ◆ Improves weld quality thanks to the reduced air sucking that occurs during welding, by the shield-gas jetting feature of the easy-to-use, fully air-cooled torch (ML-2450AH).
  • ◆ Has the lightest torch design with the thinnest grip (Φ26) in the industry.
  • ◆ Improves productivity by simultaneously welding multiple points with up to 4 to 6 time sharing deliveries.* (* Each welder is equipped with one torch unit.)
  • *When the optional isolator is mounted, the laser power output from the fiber decreases by up to 10%.


 Real-time Power Feedback Control

The laser output in the lamp-pumped module is monitored in real time. The monitored laser output is compared with the set waveform and power is fed back in real time, varying the energy input to the lamp to reproduce the set waveform and obtain the ideal laser output waveform.





 Variable mirrors

These mirrors eliminate laser power loss and improve branch balance.




 Waveform control

Equipped with a "fixed mode" that features three-level waveforms, and a "flex mode" to provide more complex waveforms.





Power monitor

Laser energy (J) and average power (W) are monitored to detect abnormalities.






The controller can be detached from the main unit to operate at your hand.



External communications

Configuration of parameters and monitoring of performance can be carried out from a separate location.
- Type: RS-485 compliant, asynchronous, full duplex
- Data speed: 9600, 19200, 38400 bps



This feature avoids marks at the end of seam welding and provides a beautiful finish even for overlapping circumference seam welding sections.



Handy torch

The thinnest and lightest handy torch in the industry


Outstanding usability! The thinnest part of the torch is 26 mm in diameter, and its mass is 260 g (the mass of the torch for the ML-2550AH is 360 g).


Example usage


Example of fillet welding with a handy laser.

Manual welding with a handy laser has the following advantages.


  • ◆ Weld in narrow places and on curved surfaces as the laser can be moved in any direction with any orientation.
  • ◆ A finish without conspicuous welding beads is also possible by repeated sweeps.
  • ◆ Produces little distortion as workpieces are almost completely unaffected by heat, and depending on the thickness of the workpiece, some workpieces can be touched immediately after welding.
  • ◆ Directly welds base metals together, leading to weight saving of workpieces, thereby supporting environment-friendly production.


Two laser welding power supply models are available to suit the application.




The 150-W power supply for a penetration depth of less than 1 mm and the 400-W power supply for sheet metal with a plate thickness of more than 1 mm.
Performs stable welding by reliably generating laser power in accordance with the preset waveform with the aid of the power feedback control function.




Can also be used in automatic processes.


The lightweight handy torch is also suitable for use with an articulated robot.
Welding is more stable with regular welding beads thanks to the dedicated start-stop signal interface.



Visit us for the demonstration!

We always accept requests for sample test at our laboratory. For more information, please contact us.



Tack welding, correction welding, and build-up welding on iron-based and stainless-steel-based thin sheet metal; trial manufacturing; production of small quantities of various thin sheet-metal products; electronic parts; electrical equipment



Model ML-2450AH ML-2550AH
Oscillation wavelength 1,064nm
Maximum average power 150W 400W
Maximum output energy 70J/P 80J/P
Maximum peak power 7kW 8kW
Pulse repetition 1~200pps 1~500pps
No. of programmable schedules 32 (Can be saved to memory)
Optical fiber SI type Φ0.4 SI type Φ0.6
Fiber optic delivery Optical fiber delivery system with up to 6 deliveries. *1 Optical fiber delivery system with up to 4 deliveries. *1
Power supply 3-phase 200V/220V/240V/380V/400V AC ±10% 50/60Hz
Heat exchange metho Water - Water
Dimensions Oscillator machine 495(W) X 995(D) X 990(H)mm 530(W) X 1347(D) X 1170(H)mm
Control Box 75(W) X 320(D) X 320(H)mm
Hand held torch 218(W) X 32(D) X 43.5(H)mm 218(W) X 37(D) X 48.5(H)mm
Weight Oscillator machine 230kg 400kg
Hand held torch 230g 360g

*1: Each oscillator is equipped with one hand unit (additional output units can be used to share deliveries other than those that use the hand unit).

*Specifications subject to change without notice.

▶ Dimensions in mm


【Handy torch】



【Control box】


【Laser oscillator】


Fillet welding



Fillet welding on 0.6-mm and 1.0-mm stainless-steel materials Forms neat welding beads with sufficient strength, thereby eliminating the need for after processing.



Welding on box-type workpieces


Angle welding on box-type 0.6-mm stainless-steel workpieces Achieves bonding with little distortion.



Cross section of penetration portion


Cross section of 1.0-mm stainless-steel materials bonded by lap welding with the ML-2550AH Lap welding achieves deep penetration across each material as thick as 2 mm.



Example of spot welding


Example of lap spot welding on iron-based material



Example of welding aluminum materials


Examples of 0.5-mm fillet and butt welding