Heavy Duty 40 bar Oil-Free Piston Compressor for Stretch Blow Molding Machine

A 40 bar high-pressure piston compressor is a reciprocating machine specifically designed to deliver compressed air at 40 bar (580 psi) for PET stretch-blow molding applications.

  • Working Pressure:40[ bar ]580[ psig ]
  • Free Air Delivery:300~1059[ cfm ]8.5~30[ m3/min ]
  • Working Power:90~315[ kw ]125~420[ hp ]

Product Details

RKL-30-40 (22).jpg


Product features

1. Superior Energy Efficiency & VFD Integration 

Energy Saving: Equipped with high-efficiency Permanent Magnet (PM) motors and VFD technology, achieving up to 20-30% energy savings during partial load conditions compared to fixed-speed AF models.

Optimized Compression: Precision-engineered 3-stage compression ratios that minimize heat loss and maximize volumetric efficiency.


2. 100% Oil-Free Certified Air Quality 

Class 0 Certified: Guaranteed ISO 8573-1 Class 0 oil-free air, ensuring zero risk of oil contamination in the PET bottles—essential for food and beverage safety.

Non-Lubricated Design: Utilizing advanced self-lubricating piston rings and specialized seal materials to prevent any lubricant carry-over.


3. Vibration Control & "Plug-and-Play" Installation 

Low Vibration: Dynamic balancing design with opposed cylinder configuration significantly reduces inertia forces, eliminating the need for heavy, expensive concrete foundations.

Compact Footprint: A more compact, integrated skid-mounted design that saves up to 15% of floor space compared to traditional AF layouts.


4. Smart Control & Industry 4.0 

IoT Ready: Integrated Smart PLC with cloud-based remote monitoring, providing real-time data on pressure, temperature, and power consumption.

Predictive Maintenance: AI-driven diagnostics that alert operators before a failure occurs, reducing unplanned downtime significantly.


5. Cost-Effective Maintenance & Rapid Response

Lower TCO: Spare parts are priced 30-50% more competitively than AF, with longer service intervals for critical valves and wear parts.

Technical Parameters

ModelAir delivery
(m³/min)

Working
Pressure
(bar)

Motor
Power
(kW)
  Speed
(rpm)
Dimensions (mm)Weight(kg)
RKL-8.5/408.5 40 90 450 4050*1750*23805500 
RKL-10/4010 40 110 500 4050*1750*23805800 
RKL-12/4012 40 132 580 4050*1750*23806000 
RKL-16/4016 40 160 390 4650*2200*27807400 
RKL-18/4018 40 185 440 4650*2200*27807600 
RKL-20/4020 40 200 470 4650*2200*27807800 
RKL-22/4022 40 220 500 4650*2200*27808000 
RKL-25/4025 40 250 390 4950*2690*29808500 
RKL-28/4028 40 280 440 4950*2690*29808800 
RKL-30/4030 40 315 470 4950*2690*29809000