Series L model roller welder SDPR L120

Series L model roller welder SDPR L120 with 120KVA power at 50%

The SDPR L120 roller welder is made of machined electro-welded sheet and structural steel which underwent severe normalization treatments so that high precision, excellent rigidity and resistance to stress can be ensured. Roller holding heads with rolling bearings, friction contacts machined which ensure a proper electric contact for the welding current, cooled by cooling liquid circulation. The heads are moved by a three-phase asynchronous motor activated by an inverter to precisely regulate welding speed and movement. Water cooled and vacuum impregnated transformer to ensure sport-welding continuity. MICRO8 Rulli weld control board of synchronous type with a microprocessor controlled in 5 steps. It controls timing which is synchronous with the network frequency, of the various phases of the cycle (docking, welding, cold time and maintenance) and the regulation of welding current by digital measuring. Spot-welding can be continuous or pulsed. It offers the dual program as standard. Multi-turn potentiometer for the adjustment of the roller rotation speed with the possibility of reversing.

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Technical features SDPR L60 SDPR L80 SDPR L120
Rated power at 50% ED 60 KVA 80 KVA 120 KVA
Max power of short circuit 72 V 96 V 144 V
Primary rated voltage 400 Hz 400 Hz 400 Hz
Rated frequency 50 Hz 50 Hz 50 Hz
Secundary voltage 4,3 KA 5,27 KA 7,62 KA
Permanent secundary current 12 KA 14 KA 16 KA
Short circuit current 16 KA 21 KA 28 KA
Max secondary current of welding 12 KA 14 KA 16 KA
Connection power 67 KVA 96 KVA 136 KVA
Section power cables (≤40 int. line) 35 mm² 50 mm² 75 mm²
Electrode pressure at 6 atm. 450 daN 450 daN 900 daN
Max welding capacity on mild steel “S” 1,2+1,2 mm 1,5+1,5 mm 2+2 mm
Movement (*) 1/2/3 1/2/3 1/2/3
Welding speed 1÷500 mm/s 1÷500 mm/s 1÷500 mm/s
Activation pneumatic
Cooling water
Useful depth (**) S/M S/M S/M
Diameter arms
Diameter high rollers 200÷300 mm 200÷300 mm 200÷300 mm
Diameter lower rollers 80 mm 80mm 80 mm
Stroke rollers 80 mm 80 mm 80 mm
Air consumption (mc / 1000 points) 4,6 4,6 9,2
Water consumption 4 l/min 4 l/min 5 l/min
Air pressure included ( 1 bar = 100 kpa) 600 KPa 600 KPa 600 KPa
Version “S” dimension B x L x H (**) 1260x790x1590
mm
1260x790x1590
mm
1260x790x1735
mm
Version “M” dimension B x L x H (**) 1800x790x1590
mm
1800x790x1590
mm
1800x790x1735
mm
Version “S” weight (**) 960 Kg 1010 Kg 1030 Kg
Version “M” weight (**) 1120 Kg 1170 Kg 1190 Kg
(*) Movement 1 Upper head    –    2 Lower head    –    3 Upper/Lower head with differential mechanical device
(**) Depth “S”  L=450 mm    –    “M”  L=1100 mm

“MICRO 8” WELDING CONTROL

Welding control mod. Micro8 Rulli, synchronous control board with a microprocessor in 5 steps. Provides timing, synchronous with the network frequency, of the various stages of the cycle (docking, welding, cold time and maintenance), and the adjustment of the welding current by partialization with continuous or impulsive selection of the spot. It offers the dual program as standard. Multi-turn potentiometer for the adjustment of the roller rotation speed with the possibility of reversing.

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