LEISTER | GEOSTAR G7/G7 LQS Hot Wedge Welding Machine

SKU LEI155.152


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The workhorse. Undefeated champion in its weight class (17.7 kg)  With turbo motor and extra large hot wedge (130 x 50 mm) for maximum welding speeds.

The GEOSTAR also features an operating unit with integrated voltage display for permanent monitoring of weld parameters and voltage. The new design makes wedge replacement a cinch and can be accomplished in under a minute. Additional features include: generous material input, smooth-motion gliding of geo-membranes—thanks to new wedge geometry—and three different parking and maintenance positions.


  1. Welding speed up to 12 m / 39 ft. per minute
  2. Digital display of all three critical weld parameters:  heat, speed and pressure
  3. Very high heating capacity / heating power
  4. Welding wedge replacement in under a minute!
  5. Integrated voltage display
  6. Adjustable chassis height
  7. Materials: HDPE 1.0 – 3.0 mm; PP. LDPE, TPO, FPO (others upon request)


Additional information

Voltage (V)

220 – 240

Frequency (Hz)

50 – 60

Power (W)


Temperature (°C)

80 – 460

Wedge (mm)

130 x 50

Max overlap (mm)


Welding pressure (N)

0 – 1500

Weld seam width (mm)

2 x 15

Speed (m/min)

0.8 – 12

Size (L × B × H) (mm)

482 × 278 × 269

Weight (kg)


Conformity mark


Leister Quality System (LQS)

The Leister Quality System (LQS) allows you to compile full quality documentation for all aspects of your welding work. You can document every welding seam as a table, graphic or even with GPS coordinates. The GEOSTAR G7 / G5 LQS provides all the advantages of state-of-the-art technology. It really stands out from the crowd – helping you to win over your client!

  • Welding protocols
  • Easily create DVS reports
  • Intuitively archive data
  • Automatic cloud synchronization
  • Protection from loss and falsification
  • Weld seam Position recording via GPS
  • Wi-Fi technology
  • Automatic device recognition
  • Administer up to 50 devices per account
  • Internal data storage prevents data loss
  • Helps with crew supervision

Product Video 1

Prdduct Video 2

Scope Of Delivery

  1. Automatic welder
  2. transport box – 3 pcs.
  3. hexagon socket wrenches
  4. cleaning brush
  5. Operating Instructions


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