Praber friction drive screw presses series suitable for hot forging of complex workpieces or requiring multiple forming steps. The compressive strength is achieved through the transformation into forming work of kinetic energy by means of flywheel accumulation.

Fields of application:

  • Hot forging
  • Cold forging of steel and alloys (cultlery, silverware, pots, etc.)
  • Minting (plates, medals, etc.)
  • Light alloys hot forging (components for cars and motorcycles, shipbuilding, aerospace, watch industry, etc.)
  • Brass hot forging (fittings, wrenches, plates and medals, components for taps and fittings, etc.)
  • Steel hot forging (Valves, screws, universal joints, rods, flanges etc.)
  • Paper industry processing (paper lace manufacturing, etc.)

The “SP” series of screw presses performs long experience in forging; it results in a very precise choice for constructive materials offering the highest working precision and complete strength.
With this new series, Praber Group intends to complete its range of presses at high technologic content, believing that durability, repeatability and flexibility are the most important advantages in all productive fields. The use of SP Praber Screw Press perfectly fits with all productions that require velocity and precision.
“SP” Praber friction drive screw presses series is suitable for hot forging of complex workpieces or requiring multiple forming steps.

Fields of application of “SP” Praber Screw Press:

  • Hot forging
  • Cold forging of steel and alloys (cutlery, silverware, pots, etc.)
  • Minting (plates, medals, etc.)
  • Light alloys hot forging (components for cars and motorcycles, shipbuilding, aerospace, watch industry, etc.)
  • Brass hot forging (fittings, wrenches, plates and medals, components for taps and fittings, etc.)
  • Steel hot forging (valves, screws, universal joints, rods, flanges etc.)
  • Paper industry processing (paper lace manufacturing, etc.)
Type SP150 SP180 SP210 SP250 SP280 SP310 SP330 SP360 SP400 SP450 SP500
Screw diameter (mm) 150 180 210 250 280 310 330 360 400 450 500
Nominl force (kN)) 2400 3400 4800 7200 8000 10000 11500 13500 16000 20000 26000
Max allowable force (kN) 3800 5400 7700 11500 12800 16000 18400 21600 25600 32000 41600
Max force (kN) 4800 6800 9600 14400 16000 20000 23000 27000 32000 40000 52000
Max useful energy (kgm) 1100 1800 2800 5400 6600 11000 14000 18000 24000 31000 45000
Horizontal light (mm)) 400 460 560 640 700 750 820 900 1000 1100 1200
Vertical light (mm) 300 350 400 450 500 500 540 600 700 800 1000
Ram stroke (mm) 300 350 400 450 500 500 540 550 650 700 750
Blows per minute (no.) 52 48 42 35 30 30 25 20 15 12 10
Motor power (kW) 22 30 30 37 45 55 55 75 110 132 160
Weight (ton) 8,5 14 19 30 38 52 65 80 115 170 220

Datasheet:
Presses SP series