Sisma SWT 100 and SWT 150 Mold Repair Laser Welders (Class 1)

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Special Order Item
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Sisma offers a range of laser welders engineered specifically for the repair and maintenance of molds. The range includes the best-selling SWA series for all mold sizes, the SWT series for medium and small molds, and the LM-B series for small molds. Sisma laser welders are used in premier mold & die shops around the world, carrying an excellent reputation for the highest precision and ease of use. All are made at Sisma’s headquarters in Italy, and are backed by a 1-year manufacturer’s warranty.

SWT Class 1 welding laser systems are specifically designed for the maintenance of small/medium-sized molds up to 400mm square (approx. 15.75" square). The robust design and sturdy working table allows the operator to work in outstanding comfort and with minimal vibration. Characterized by a high capacity and axis stroke, the systems have a direct resonator with 3 motorized axes X-Y-Z which are controlled by a joystick. The system contains an optical head with F150 focal lens and a 10X STEREO microscope.

These closed versions provide a Class I welding system for mold repair. The system's ergonomic features allow prolonged or occasional use. The movement of the axes has been designed to ensure durability over time as well as fluid and precise machining. Internet connection for easy check and/or remote service assistance. In/out input of data through a USB key. SWT is also available in a Class 4 open system. See related product below.


  • Advanced software functions such as welding on circumference, line, filling, and rotating spindle management
  • High laser beam quality: new optical design ensures high performance
  • Available with fiber laser source: maintenance free and low power consumption
  • Internet connection for remote control
  • Ergonomic design
  • Heavy duty machinery, fluid and precise movements over the high carrying capacity and high axes stroke.
  • Safety features include proper functioning verification and control.
Find these items on these pages in our catalog:
  • 565
    SWT 100 - Class 1 SWT 150 - Class 1
    Item Number: 830-1740 830-1745
    Source Type: Nd: YAG (flash lamp) Nd: YAG (flash lamp)
    Wavelength: 1064 nm 1064 nm
    Average laser power (max): 100 W 150 W
    Peak laser power (max): 7.5 kW 10.5 kW
    Laser pulse energy (max): 60 J 75 J
    Laser pulse duration: 0.2 ms - 20 ms 0.2 ms - 20 ms
    Spot diameter (with 800 um fiber): 0.3 - 2 mm 0.3 - 2 mm
    X-Y axes stroke: 300 x 200 mm 300 x 200 mm
    Z axis stroke: 320 mm 320 mm
    Axes speed: 0.1 - 25 mm/s 0.1 - 25 mm/s
    Incorporated cooling: Air cooling / Water cooling is integrated. Air cooling / Water cooling is integrated.
    SWT system power supply: 400V±10%, 3PH, 50/60 Hz 400V±10%, 3PH, 50/60 Hz
    Max mold size: 400 x 400 mm (15-3/4" x 15-3/4") 400 x 400 mm (15-3/4" x 15-3/4")
    Max Workpiece Weight: 120 kg (264 lbs.) 120 kg (264 lbs.)
    Dimensions w x d x h: 85 x 120 x 150 cm (2-3/4' x 4' x 5') 85 x 120 x 150 cm (2-3/4' x 4' x 5')
    Weight: 560 kg (1,235 lbs.) 560 kg (1,235 lbs.)
    Warranty: One Year Manufacturer's Warranty One Year Manufacturer's Warranty
    Made In: Italy Italy