GRF PET Blow-Moulding Oil-Free Piston Compressors
SWF / WW / MW frames, 12 models, 1.5–28 m³/min at 40 bar, all oil-free — clean high-pressure air dedicated to PET blow moulding.
GRF PET Blow-Moulding Oil-Free Piston Compressors
SWF / WW / MW frames, 12 models, 1.5–28 m³/min at 40 bar, all oil-free — clean high-pressure air dedicated to PET blow moulding.
Overview
Blow moulding demands oil-free air at a steady 40 bar. Cylinders and packing run oil-free; three-row double-acting cylinders balance reciprocating forces for low vibration and long wear-part life, and sensible stage pressure splits keep discharge temperatures low. Small SWF sets are air-cooled skids; WW water-cooled sets and the large MW symmetric-balanced machines share a common baseframe, with optional wireless remote monitoring so running data can be analysed at the factory.
Key features
Oil-free cylinders and packing — no contamination of preforms or bottles.
Balanced stage pressures keep discharge cool and blowing pressure stable.
Balanced inertia, low vibration, VSD-ready for energy saving.
Full protection set; optional wireless monitoring and data analysis.
Model data
Models in this family
| Model | FAD (m³/min) | Pressure (bar) | Power (kW) | Weight (kg) | Lubrication | Cooling | L×W×H (mm) |
|---|---|---|---|---|---|---|---|
| SWF-1.5-40 | 1.5 | 40 | 18.5 | 1560 | Oil-free | Air cooled | 2000×2300×1750 |
| SWF-2-40 | 2.0 | 40 | 22 | 1720 | Oil-free | Air cooled | 2000×2300×1750 |
| WW-3-40 | 3.0 | 40 | 37 | 4000 | Oil-free | Water cooled | 2500×2300×1750 |
| WW-4-40 | 4.0 | 40 | 55 | 5000 | Oil-free | Water cooled | 2500×2400×1850 |
| WW-5-40 | 5.0 | 40 | 75 | 6000 | Oil-free | Water cooled | 2500×2400×1850 |
| WW-6-40 | 6.0 | 40 | 75 | 6000 | Oil-free | Water cooled | 2500×2400×1850 |
| WW-8-40 | 8.0 | 40 | 110 | 6500 | Oil-free | Water cooled | 2800×2400×1850 |
| WW-10-40 | 10.0 | 40 | 132 | 7000 | Oil-free | Water cooled | 2800×2600×1850 |
| WW-12-40 | 12.0 | 40 | 160 | 7000 | Oil-free | Water cooled | 2800×2600×1850 |
| MW-22/40 | 22.0 | 40 | 220 | 20000 | Oil-free | Water cooled | 5500×3300×2550 |
| MW-25-40 | 25.0 | 40 | 250 | 20000 | Oil-free | Water cooled | 5500×3000×2550 |
| MW-28-40 | 28.0 | 40 | 280 | 20000 | Oil-free | Water cooled | 5500×3000×2550 |
