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WELDPLAST S4

  • Compact housing design reduces noise and guarantees optimal cooling for the electronics and drive
  • Microprocessor to regulate the welding process and to monitor the tool
  • Menu with function programs
  • Dual-sided, twist-free wire intake
  • Maintenance-free blower

The WELDPLAST S4 is the first extrusion welder of its kind with brushless, maintenance-free motor for generating preheated air. Output of up to 4 kg / 8.8 lbs. per hour is possible thanks to the S4's powerful drive system.


Technical Data

Details WELDPLAST S4 - 230 V / 3680 W / side hot-air guide / EU-plug + +

Article No. *116.948*

Attribute Unit Value
Welding rod inch ∅ 0.12 – 0.16
Voltage V~ 230
Power W 3680
Max. air outlet temperature °F 662
Max. Plastification temperature °F 500
Material PE / PP
Output lbs / hr 3.3 – 8.8
Size (L × W × H) inch 22 × 4.3 × 11.8
Weight lbs 19.2
Conformity mark CE Certification
Protection class I Protection Class I
Details WELDPLAST S4 - 230 V / 3680 W / top hot-air guide / EU-plug + +
Details WELDPLAST S4 - 230 V / 3680 W / top hot-air guide / K15 / EU-plug + +

Scope of delivery

116.948 WELDPLAST S4, side hot-air guide, blank welding shoe, preheating nozzle large, medium and small, storage case
146.813 WELDPLAST S4, side hot-air guide, K15 welding shoe, preheating nozzle medium, storage case
146.812 WELDPLAST S4, top hot-air guide, overlap welding shoe 40 mm, preheating nozzle large, storage case

Additional Products and Accessories

Details General accessories

General accessories

Leister Welding rod Leister Welding rod
144.095 Tool kit wrapped up, for Varimat + More
Leister insulation sleeve Leister insulation sleeve
149.723 Insulation sleeve + More
Details Extrusion welders

Extrusion welder accessories

117.518 Preheating nozzle 25mm, medium + More
117.053 Preheating nozzle 20mm, small + More
117.065 Hot air guide on top WELDPLAST 4 + More
117.064 Hot air guide lateral WELDPLAST 4 complete + More
141.177 Preheating nozzle 35 mm, large + More
Preheat reflector Preheat reflector
136.231 Tool kit wrapped up, for Varimat + More

Welding shoes

144.904 Angled adapter 45° + More
146.232 complete (FWP-Ext.Air) fillet weld 0.8 inch + More
146.240 complete (FWP-Ext.Air) blank 2.9 x 1.96 x 2.28 inch + More
146.247 complete (FWP-Ext.Air) V-seam 1.2 inch + More
146.243 complete (FWP-Ext.Air) V-seam 0.47 and X-seam 1 inch + More
146.242 complete (FWP-Ext.Air) overlap 1.4 inch + More
146.231 complete (FWP-Ext.Air) fillet weld 0.6 inch + More
146.246 complete (FWP-Ext.Air) V-seam 1 inch + More
146.233 complete (FWP-Ext.Air) fillet weld 0.98 inch + More
146.245 complete (FWP-Ext.Air) V-seam 0.8 and X-seam 1.4-1.6 inch + More
145.899 complete (FWP-Ext.Air) overlap 1.6 inch + More
146.234 complete (FWP-Ext.Air) fillet weld 1.2 inch + More
146.218 complete (FWP-Ext.Air) corner short, D=0.8 inch + More
146.244 complete (FWP-Ext.Air) V-seam 0.6 and X-seam 1.2 inch + More
146.241 complete (FWP-Ext.Air) overlap 1 inch + More
146.230 complete (FWP-Ext.Air) corner long, D=0.55 inch + More
angled-adapter angled-adapter
145.705 Angled adapter 90° + More
146.239 complete (FWP-Ext.Air) blank 2.1 x 1.6 x 2 inch + More

Item added to watchlist