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40 Bar Oil-Free PET Blowing Air Compressor
A 40 bar (580 psi) oil-free compressor for PET blowing delivers clean, high-pressure air using lubrication‑free technology (e.g., PTFE rings or water injection). Unlike oil‑lubricated units, it eliminates any risk of oil contamination, providing 100% oil‑free air that meets food and pharmaceutical standards. This makes it ideal for producing high‑quality PET bottles for beverages, cosmetics, and medical containers where purity and stable pressure are essential.
Product Parameters
| Model | Air delivery (m³/min) | Working Pressure (Bar) | Motor Power (kW) | Speed (RPM) | Dimensions (mm) | Weight （kg） | ||||||||||||||||||||||||
| RKL-20/40 | 20 | 40 | 200 | 470 | 4650*2200*2780 | 7800 | ||||||||||||||||||||||||
| RKL-22/40 | 22 | 40 | 220 | 500 | 4650×2200*2780 | 8000 | ||||||||||||||||||||||||
Key Advantages of Rocky Compressors Compared to AF Models
Similar Operational Stability
Rocky provides a level of operational stability very close to that of AF, ensuring dependable round‑the‑clock performance in PET blow molding applications.
Reduced Maintenance Expenses
Its streamlined design leads to noticeably lower costs for maintaining accessories and spare parts.
Enhanced Energy Efficiency
State‑of‑the‑art variable frequency drive (VFD) technology cuts energy usage dramatically — typically 25–40% less than standard fixed‑speed systems.
Greater Overall Cost Advantage
Shorter lead times, adaptable OEM supply arrangements, and a reduced total cost of ownership (TCO) position Rocky as a compelling, budget‑friendly alternative to AF.
Main Applications
Food & Beverage Industry – Core application area for PET container production.
Bottled water (drinking, mineral, purified water)
Carbonated soft drinks (cola, soda, etc.)
Juices & tea drinks (non-carbonated beverage bottles)
Edible oils & condiments (cooking oil, soy sauce, vinegar, etc.)
Dairy products (milk, yogurt PET bottles)
Pharmaceutical & Medical Industry – For high-purity medical and drug containers, meeting ISO 8573-1 Class 0 oil-free standard.
Drug packaging (oral liquids, syrups, tablets)
Medical device components or packaging
Health supplement containers
Cosmetics & Personal Care Industry – For plastic packaging of daily chemical products.
Shampoo & body wash (PET bottles)
Skincare & perfume (creams, lotions, perfumes – odor-sensitive applications)
Other daily chemicals (laundry detergent, dish soap, etc.)
Industrial Manufacturing & Testing
Industrial pressure & leak testing (pressure vessels, pipelines)
PET bottle manufacturing & blow molding (core function)
Automotive industry (blow-molded parts like air ducts, fluid containers)
Electronics & high-tech industries (oil-free air for component production lines)
Petrochemical industry (high-pressure, oil-free processes)
Paper & textile industry (clean air for pneumatic equipment)
