Engineered for clean-air environments, this oilless industrial rotary screw air compressor is a core supplier-grade solution with high water lubrication efficiency.
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Heavy-duty dry type oilless industrial rotary air compressor, ideal for mass production requiring zero risk of oil contamination.
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Highly robust, fixed speed design providing consistent, non-stop compressed air supply for compact industrial workshops.
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Supports R22/R134A/R407c/R410A refrigerants. High efficiency air drying unit to protect downstream pneumatic pathways.
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Utilizes smart permanent magnet variable frequency vectoring to minimize energy consumption and system wear during variable demands.
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High-precision filtration consumables and separator elements to maintain system pressure and purity standards.
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Heavy duty utility-class AC power screw compressor built for multi-shift factories needing relentless uptime and volume delivery.
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Energy saving VFD integration providing up to 30% reduction in power loss. Designed for dynamic flow demands.
View Product DetailsIn the landscape of modern heavy industrial engineering, medium-to-high pressure compressed air systems—particularly operating at 30 Bar (435 PSI)—serve as critical power vectors. Standard low-pressure screw compressors typically max out between 7 and 13 Bar, which is sufficient for simple pneumatic tools and instrumentation. However, critical processes such as pet bottle blowing, high-power fiber laser cutting, and specialized pressure testing require the thermodynamics and volumetric stability only a dedicated 30 Bar compression loop can sustain.
As global manufacturing transitions toward high automation and energy-efficient parameters, the demand for high-quality ODM 30 Bar air compressors has accelerated. Relying on booster compressors on top of standard low-pressure loops often introduces system complexity, thermodynamic inefficiency, and multiple points of failure. By engineering a native two-stage, high-pressure rotary screw compressor system, industrial operations secure a high volumetric output, enhanced safety metrics, and a drastically reduced power consumption footprint.
Optimal pressure range for high-capacity PET bottle forming & deep fiber laser purging.
Achieved via Variable Speed Drive (VSD) and Permanent Magnet (PM) synchronous motors.
Minimizes the compression ratio per stage, reducing internal leakage and heat stress.
Meets strict global safety directives for high-pressure manufacturing operations.
Established in early 2004, Shanghai Honest Compressor Co., Ltd. is a distinguished British-owned manufacturing powerhouse. Our state-of-the-art facility is strategically positioned at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. Over the past two decades, we have matured into a leading large-scale enterprise specializing in the production of twin-screw air compressors, positioning ourselves as an indispensable global supplier of sophisticated air system solutions.
Our product portfolio is engineered to support a diverse spectrum of pressures and applications. We offer comprehensive solutions, including medium/high-pressure piston air compressors, oil-free water lubricating and dry-type screw compressors (ranging from 3KW to 480KW), high-pressure gas separation systems, refrigerant compressors, refrigerated air dryers, precision coalescing filters, and advanced ceramic membrane filtration systems. With integration at our core, we serve as the OEM/ODM backbone for numerous international blue-chip brands, ensuring strict adherence to global safety and quality protocols.
Below is a visual cross-section of our production floor, showing the high-precision rotor machining and structural assembly lines that drive our 30 Bar air compressors and vacuum equipment:
Space-saving design that integrates the rotary screw air compressor, refrigerated dryer, precision filter, and air receiver tank into a single high-performance frame.
Offers certified Class 0 oil-free air delivery. Specially engineered rotors ensure ultra-quiet operation for sensitive laboratory and medical manufacturing settings.
High-capacity dry-screw block intended for heavy industrial chemical processing, pharmaceutical lines, and semiconductor clean rooms.
Equipped with a dual-rotor assembly that optimizes pressure ratios, delivering higher volumetric efficiency and significant energy savings over single-stage units.
Combining a premium motor and compact dryer setup, this model minimizes pressure drops and delivers continuous, clean utility air.
Integrated explosion-proof design. Highly reliable for manufacturing setups with limited footprint availability and strict installation times.
Engineered for large-scale operations. Excellent isothermal efficiency via interstage cooling liquid injection, dropping thermodynamic losses to near-zero levels.
Combines permanent magnet variable frequency vector control with dual-stage compression. Optimal speed regulation yields minimal offload energy wastage.
A classic workshop workhorse utilizing robust belt/direct coupling configurations to guarantee long bearing lifetimes and trouble-free operations.
Ultra-silent design featuring sound-dampening enclosures, integrated air dryers, and a 1-year warranty. Perfect for local workshop installation with no separate plant room.
Model XD-8A, direct-coupled elastic connection, Star-Delta starting method, IP55 protection rating, and automatic PLC control interface.
Dual-rotor design mounted in a single casing, driven by a smart front gear assembly to balance rotor line speed and optimize energy saving parameters.
When pushing air pressure to 30 Bar, standard single-stage rotary compressors experience a steep loss of thermodynamic efficiency. In single-stage systems, the compression ratio is high (typically around 30:1 if drawing from atmospheric air), which leads to extreme exit temperatures, high rotor thermal expansion, and increased air leakage slippage back across the rotor lobes. This heat buildup breaks down lubricating oils rapidly, creating a severe risk of varnishing and premature bearing failure.
To combat this, Shanghai Honest's ODM 30 Bar screw compressors utilize Two-Stage Compression technology. By splitting the pressure escalation into two steps (e.g., stage one compresses from atmospheric pressure to approximately 6 Bar, and stage two compresses the pre-cooled air to 30 Bar), the compression ratio per stage remains between 5:1 and 6:1. This reduces the volumetric leakage across rotor gaps and ensures the internal air temperatures remain well below critical limits, resulting in a system that consumes up to 15% less power than single-stage boosters.
| Performance Indicator | Single-Stage Configuration | Two-Stage 30 Bar Screw System | Operational Advantages |
|---|---|---|---|
| Compression Ratio | High (~30:1) | Balanced (~5.5:1 per stage) | Less internal slippage; longer rotor lifespan |
| Discharge Temperature | > 110°C (requires extreme cooling) | 75°C - 85°C (after interstage cooling) | Prevents lubricant degradation and varnish |
| Specific Power Consumption | High (~9.2 kW/m³/min) | Low (~7.8 kW/m³/min) | Reduces factory electricity bills by up to 15% |
| Volumetric Efficiency | 72% - 78% | 90% - 94% | Delivers more actual flow per horsepower |
Operating air machinery at 30 Bar pressure introduces strict safety and regulatory demands. Every system manufactured by Shanghai Honest is subjected to rigorous finite element analysis (FEA) to confirm the pressure vessel safety thresholds. Our manufacturing framework is fully compliant with the European Union's CE-PED (Pressure Equipment Directive), and our storage tanks can be ordered with ASME certification to satisfy North American safety codes.
Additionally, the air purification system must match the operational requirements of downstream equipment. High-pressure air carrying residual compressor oil can ruin expensive PET injection molds, contaminate pharmaceutical batches, or block delicate laser cutting optic heads. Our 30 Bar compression configurations incorporate active multi-stage coalescing filtration and integrated air-cooled refrigerated dryers, maintaining pressure dew points of 2-10°C and ensuring air purity levels meet the ISO 8573-1 Class 1 or Class 0 specifications.
Our ODM 30 Bar air compressors are utilized globally across several high-performance industries:
As industrial plants adopt digitalization and Industry 4.0 frameworks, Shanghai Honest is integrating IoT monitoring modules directly into our 30 Bar screw compressors. By utilizing vibration sensors and real-time thermal analysis on the screw rotors, the compressor's controller can predict potential bearing wear or lubrication issues before they cause downtime. These smart algorithms dynamically adjust the variable frequency drive speed to match load changes, eliminating unnecessary motor starts and reducing overall mechanical stress.
We are also focused on developing sustainable, high-pressure water-lubricated oil-free systems. By utilizing water as both a cooling medium and a lubricant inside the rotor housing, we eliminate oil contamination risks, making these systems highly suited for the chemical, food, beverage, and medical sectors.
A two-stage rotary screw compressor provides a continuous, high-volume flow of air with low vibration and high thermodynamic efficiency. A booster pump, which is often a reciprocating piston system, operates in pulses, requires more maintenance, and consumes more energy when handling large volumes of air. The integrated two-stage system simplifies piping, reduces maintenance points, and lowers overall energy consumption.
Our manufacturing facilities are ISO 9001 certified. The high-pressure receiver vessels and internal systems are designed and built in accordance with CE-PED (Pressure Equipment Directive) and ASME code requirements, allowing for import and installation across Europe, the Americas, and Asia.
VFD technology adjusts the compressor's motor speed to match real-time demand. This avoids the energy loss from standard on/off cycles, reduces start-up currents, and protects mechanical components, saving up to 30% on energy costs in facilities with varying air demand.
We recommend a minor service (replacing oil, air filter, and oil separator cartridge) every 2,000 to 3,000 operating hours. A major service, including bearing inspections, alignment checks, and safety valve recalibration, should occur every 8,000 operating hours or annually to maintain safety and efficiency.
Shanghai Honest participates in global trade shows to present our latest developments in compression technology. Our engineering teams regularly showcase our dry vacuum pumps and high-pressure screw compressors at major manufacturing and automation expos.
According to MRFR analysis, the dry vacuum pump market is valued at US$ 5.97 billion in 2024. The market is projected to grow from US$ 6.17 billion in 2025 to US$ 8.28 billion by 2034. Our development team is aligned with this growth, introducing specialized high-efficiency dry pumps to serve these evolving industrial demands.
A low-noise, constant frequency system built to provide stable utility air for general industrial applications.
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Engineered specifically to supply auxiliary assist gas for precision sheet metal laser cutting systems.
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A space-saving 4-in-1 integrated design featuring a fixed speed screw pump, dryer, filter, and receiver tank.
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Features permanent magnet variable frequency control to deliver high efficiency in compact spaces.
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A single-phase, high-torque compressor designed for workshops and smaller manufacturing setups.
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Equipped with a high-efficiency double screw air end and dynamic variable speed drive control.
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An energy-efficient progressive screw vacuum pump designed for reliable vacuum supply in industrial lines.
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A large-capacity, air-cooled system featuring permanent magnetic variable frequency drive operating at 380V.
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