Engineered for absolute silent operations and high thermal efficiency. Features an innovative oil-cooled permanent magnet motor configuration that safeguards against demagnetization.
Designed for heavy industrial applications. Two-stage compression reduces internal compression ratios, lowers thermal stresses, and increases overall volumetric efficiency by up to 15%.
Delivers stable and constant 20 bar compressed air supply necessary for clean, slag-free precision fiber laser cutting. Features highly integrated dynamic filtration systems.
Perfect for light industrial operations or regions where only single-phase power is available. Equipped with intelligent PM VFD technology to dynamically track load demands.
Engineered for extreme reliability in vacuum applications. Micro-oil structure provides optimal sealing performance, low vibration levels, and exceptionally long system lifetimes.
Designed for critical applications in food processing, medical systems, and semiconductor fabrication where absolute purity of air is non-negotiable. Purely oil-free air delivery.
An integrated station combining the screw air compressor, dry purification assembly, and high capacity receiver tank. Space-saving and highly optimized for rapid deployment.
Features a robust direct drive coupling to minimize mechanical energy transmission losses. Fully regulated VSD permanent magnet motor guarantees energy efficiency across fractional load zones.
In the modern industrial paradigm, compressed air is often referred to as the "fourth utility". Across manufacturing, automotive assembly, chemical synthesis, electronic fabrication, and food production, the requirement for reliable, energy-efficient compressed air is paramount. Historically, reciprocating piston compressors dominated small applications, while centrifugal compressors were reserved for immense utility systems. Today, the rotary screw air compressor represents the gold standard for continuous-duty commercial and heavy industrial operations.
The primary technical mechanism of a rotary screw compressor is positive displacement via interlocking male and female helical rotors. As the rotors turn, they reduce the volume of the trapped air cavity, increasing pressure smoothly without the heavy pulsations and mechanical friction seen in reciprocating designs. This allows for 100% continuous duty cycles, allowing factories to run 24/7 without risk of thermal overload.
To understand why international procurement managers insist on VSD PM (Variable Speed Drive Permanent Magnet) configurations, one must look at typical factory air demand profiles. Unlike static mathematical calculations, real-world air demand fluctuates second-by-second depending on machine cycling, tooling, and shifts.
Established in early 2004 as a British-owned enterprise, Shanghai Honest Compressor Co., Ltd. has grown to become one of China's most trusted manufacturing forces in the field of twin-screw air systems. Operating from our state-of-the-art facility at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China, we combine European engineering standards with Chinese manufacturing agility.
Our strategic position in Shanghai allows us to leverage one of the most mature industrial components supply chains in the world. We offer comprehensive, customized ODM/OEM capabilities, allowing international partners to customize machine dimensions, pressure ratings, cooling configurations, PLC controls, and voltage/frequency inputs (including 220v/50hz single phase, 380v/50hz three phase, and 460v/60hz options).
Integrated design including air compressor, dryer, filter, and tank. Highly efficient, saves installation space, and reduces pressure drops.
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Specially engineered for applications requiring 100% oil-free air. Silent operational sound level, robust casing design.
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High-capacity industrial oil-free dry screw compressor. Superior energy efficiency and absolute environmental safety.
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Two-stage rotary screw compression profile. Minimizes energy losses, maximizes volumetric efficiency, and increases durability.
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Combines space savings with premium performance. Low vibration levels, direct coupled efficiency, and user-friendly PLC.
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A compact station featuring integrated air filtration, desiccant air drying, and receiver tanks in a single pre-configured unit.
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Engineered for high-volume mining and heavy industrial sectors. Minimizes pressure drops and lowers thermodynamic wear.
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High power 315kw unit with Permanent Magnet VFD motor structure. Optimal configuration for heavy-duty industrial air loops.
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Reliable fixed speed industrial workhorse. Features a simple electrical system layout for easy maintenance and trouble-free operation.
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Integrated screw air compressor system. wholesale low prices, OEM compatibility. ISO, CE certified with 1-year warranty.
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Model XD-8A, 0.8-1.2m3/min free air delivery. 7-12bar. Direct driven with elastic coupling, automatic PLC controller, and air cooling.
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Oil injection screw air compressor with equal pressure ratio, ultra-small leakage, and low noise. Rotors housed in a single casing.
See more products >Selecting an electric rotary screw air compressor requires matching the machine’s engineering profile to the specific industrial application. We analyze three major application profiles:
In metal fabrication shops, fiber laser cutters require high-pressure auxiliary gases (typically nitrogen or clean air) to push molten metal away during the cutting cycle. If the air pressure fluctuates or contains micro-droplets of oil or moisture, the laser beam will scatter. This causes slag accumulation and degrades cut quality. Our ODM 20bar Screw Air Compressor is engineered specifically for this scenario. It provides a constant, dry, and oil-filtered 20bar flow, preventing slag formation and protecting the sensitive laser head.
In food packaging, brewery aeration, pharmaceutical tableting, and silicon wafer rinsing, any trace of mineral oil carryover will contaminate the final product. For these high-risk areas, standard oil-injected units are not suitable, regardless of the filtration level. The Dry Type Oil-Free Screw Compressor uses special non-wearing polymer coatings on the rotors, keeping the compression chamber completely dry and eliminating the risk of oil contamination.
Vacuum pumps are widely used for pick-and-place robotics, wood routing, food preservation sealing, and chemical distillation. Using a Screw Vacuum Pump instead of liquid ring or vane pumps provides stable vacuum levels, lower utility usage, and longer maintenance intervals.
The compressed air industry is rapidly shifting toward higher energy efficiency, reduced maintenance, and smart system integration. Key technologies defining this development include:
When specifying an ODM or OEM screw compressor, international procurement managers should evaluate the following core parameters:
| Parameter | Fixed Speed Units | PM VSD Units | Two-Stage PM VSD Units |
|---|---|---|---|
| Initial Investment | Low | Moderate | Premium |
| Energy Cost Allocation | High (due to unload losses) | Reduced (by 30-35%) | Optimized (up to 45% savings) |
| Pressure Stability | ±0.5 bar fluctuations | ±0.1 bar stability | ±0.1 bar stability |
| Best Application Scenarios | Continuous, steady 24/7 loads | Varying air demands, multi-shift plants | Large industrial complexes, continuous use |
Two-stage compression divides the compression process into two distinct steps. The air is cooled as it passes between the stages. This intercooling step brings the compression process closer to isothermal conditions, reducing energy consumption and mechanical wear on the rotors.
PM motors use permanent magnets instead of electromagnetic fields to generate rotor rotation. This design eliminates rotor copper losses and slip, maintaining high efficiency even at lower motor speeds. This is crucial for variable-demand applications.
Yes. We supply configurations like the OEM 10A-PM compressor, designed to run on 220v/50hz single-phase power. This is ideal for smaller workshops or facilities without access to industrial three-phase power.
Moisture or oil in the air supply can damage or scatter the laser beam during cutting. Our ODM 20bar compressor is built to supply high-pressure, dry, oil-free air to ensure clean, precise cuts on fiber laser systems.
An integrated station combines the screw air compressor, a refrigerant air dryer, precision filters, and a certified receiver tank into a single compact unit. This setup simplifies installation, reduces space requirements, and minimizes pressure drops across components.
All our systems are manufactured in compliance with ISO9001 and ISO1217 standards, and carry CE certifications. This ensures they meet international safety and environmental regulations for globally exported products.
A space-saving 11kw VSD solution featuring a built-in refrigerant dryer. Ideal for mid-sized workshops demanding constant dry air supply.
Designed for variable operating pressures. Delivers continuous pressure adjustments between 0.7 and 1.25mpa to match fluctuating plant needs.
Heavy-duty 132kw unit built for harsh environments, such as mining and manufacturing operations requiring high volumetric output.
Features dual permanent magnet motors driving separate stages of compression. Optimizes rotational speed to maximize efficiency.
A low-noise, 4-in-1 integrated unit available from 7.5kw to 22kw. Combines the compressor, dryer, filter, and tank into one package.
Designed for wastewater treatment and dry bulk conveyance. Delivers clean, oil-free low-pressure air at high volumetric flows.
High-efficiency screw vacuum pump with variable frequency control. Maintains stable vacuum levels under changing loads.
Dual-purpose engineering configuration suitable for vacuum extraction or air compression. Powered by a high-efficiency PM motor.
Shanghai Honest Compressor Co., Ltd. is a British-owned enterprise. It was founded in early 2004. The production address is located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. It is a large-scale manufacturing enterprise specializing in the production of twin-screw air compressors in China. At the same time, it is also an important supplier of air system solutions.
We provide various types of piston air compressors (low pressure, medium pressure, high pressure, oil-free air compressors), screw air compressor systems (3KW-480KW various screw air compressors, gas separation equipment, refrigerant compressors, cold dryers, filters, ceramic membrane filtration systems) and various equipment accessories and consumables.
According to MRFR analysis, the dry vacuum pump market size is valued at US$ 5.97 billion in 2024. The dry vacuum pump market is expected to grow from US$ 6.17 billion in 2025 to US$ 8.28 billion in 2034, registering a steady compound annual growth rate as industrial sectors transition toward dry, oil-free operations.
Shanghai Honest Compressor Co., Ltd. continuously participates in key domestic and international trade shows, showcasing our latest engineering achievements in high-pressure screw compressors and variable frequency vacuum pump systems.