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CROWN gear pump
Gear Pump (polymer melt pump)

The gear pump is a precise method to ensure constant polymer melt flow, which contributes to the highest quality output. Used in pumping, gauging and pressurizing all high/low viscosity plastic melt


Function
  1. The pressure is measured before the fluid enters the gear pump
  2. Extrusion speed is adjusted by PLC
  3. Constant melt pressure and stable flow rate maintained


Features
  • Housing is made of chromium-nickel alloy, nickel-base alloy or titanium alloy
  • Gear and bearing are made of graphite, NIAG, zirconium oxide or quench tool steel

Benefits
  • Improves product quality by eliminating variations in output pressure
  • Guarantees accurate gauging
  • Ensures constant pressure after pump

Technical Data (download gear pump technical datasheet)

Gear Pump Data For PP, PS, PB, TPE, High Shear Sensitive 0.73g/cm³
Pump Size Volume cm³/rev Speed (min [rpm]) Speed (max [rpm]) Output (min [kg/hr]) Output (max[kg/hr])
CGP-50 40 10 120 16 190
CGP-70 100 10 110 40 440
CGP-82 150 10 100 60 600
CGP-110 400 10 90 160 1,440
CGP-130 700 10 90 280 2,240

Gear Pump Data For PE, HD, LD, LLD, HIPS, ABS Shear Sensitive 0.75g/cm³
Pump Size Volume cm³/rev Speed (min [rpm]) Speed (max [rpm]) Output (min [kg/hr]) Output (max[kg/hr])
CGP-50 40 10 100 17 170
CGP-70 100 10 90 42 378
CGP-82 150 10 80 63 504
CGP-110 400 10 70 165 1,155
CGP-130 700 10 60 288 1,728

Gear Pump Data For PET, PBT, PC, PA, PMMA, Low Shear Sensitive 1.15g/cm³
Pump Size Volume cm³/rev Speed (min [rpm]) Speed (max [rpm]) Output (min [kg/hr]) Output (max[kg/hr])
CGP-50 40 10 90 23 207
CGP-70 100 10 80 58 464
CGP-82 150 10 70 88 616
CGP-110 400 10 60 235 1,410
CGP-130 700 10 50 411 2,055