High-efficiency, industrial-grade rotary screw air compressors, frequency inverter PM VSD systems, and auxiliary compressed air purification equipment manufactured under strict ISO9001:2015 quality standards.
Founded in early 2004, Shanghai Honest Compressor Co., Ltd. stands as a premier British-owned enterprise specializing in high-performance twin-screw and single-screw air compressor manufacturing. Headquartered at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China, our state-of-the-art facility merges British precision design with China’s advanced supply chain ecosystems.
Fully compliant with ISO9001:2015 Quality Management Systems, we strictly monitor every stage of design, component sourcing, rotor profiling, and assembly line testing. Verified by the National Compressor Inspection Center, our machines consistently outperform national energy efficiency standards. We engineer comprehensive air system solutions spanning 3kW to 480kW with discharge capacities from 0.5m³/min to 75m³/min.
Understanding the physics of compression: Why single-screw engagement mechanics deliver unmatched axial force balance, reduced acoustic friction, and operational longevity.
The single-screw configuration utilizes one central main screw engaged with two symmetrical star wheels. This symmetrical layout cancels out radial loads acting upon the rotor shaft. The compression chambers on opposing sides reach peak pressure simultaneously, eliminating severe bearing stress and delivering ultra-long operational lifespans exceeding 100,000 continuous hours.
Integrating Permanent Magnet (PM) Variable Speed Drive (VSD) technology allows the compressor shaft speed to dynamically match real-time air demand. By eliminating idle power dissipation and soft-starting without current spikes, energy consumption drops by 30% to 45% compared to conventional fixed-speed industrial units.
Our OEM water-lubricated single-screw designs utilize purified water as the sealant and cooling medium inside the compression cavity. Operating at ultra-low thermal gradients (below 50°C compression discharge), it eliminates oil contamination entirely, delivering ISO 8573-1 CLASS 0 certified air for pharmaceutical, food, and electronics applications.
In standard twin-screw designs, asymmetric rotor geometry induces strong unidirectional radial loads, requiring complex multi-row angular contact ball bearings. Single-screw architecture distributes compression across dual engagement planes, allowing hydrostatic water film lubrication to replace mechanical contact entirely in oil-free setups. This lowers mechanical losses by up to 12% at partial load points.
| Compressor Type | Power Range (kW / HP) | Discharge Pressure (Bar) | Lubrication / Medium | Drive Mechanism | Target Sector Application |
|---|---|---|---|---|---|
| VSD PM Single Screw | 7.5 kW – 132 kW (10-175 HP) | 7.0 – 13.0 Bar | Synthetic Fluid / Water | Direct PM Drive | General Industry, Electronics, Automation |
| Water-Lubricated Oil-Free | 11 kW – 160 kW (15-215 HP) | 7.0 – 10.5 Bar | 100% Pure Water (Class 0) | Direct Co-Axial Drive | Pharma, Food & Beverage, Cleanrooms |
| Two-Stage Heavy Duty Screw | 55 kW – 480 kW (75-650 HP) | 8.0 – 13.0 Bar | Premium Lubricant | Direct Gear / PM Direct | Mining, Chemical, Heavy Manufacturing |
| Integrated 4-in-1 Compact Unit | 7.5 kW – 22 kW (10-30 HP) | 7.0 – 10.0 Bar | Oil-Injected / Rotary | Belt / Direct Drive | Laser Cutting, Automotive Repair, OEM Plants |
Why Fortune 500 companies and regional industrial distributors partner with Shanghai Honest Compressor Co., Ltd. for scalable contract manufacturing and tailored engineering.
Located in Jiading District, Shanghai, our plant houses high-precision five-axis rotor grinding machines, automated coordinate measuring machines (CMM), and specialized assembly lines. Vertical integration ensures 100% quality control over rotor tolerances, thermal treatment, and housing alignment.
We supply fully white-labeled or co-branded industrial compressor systems. Global buyers customize electrical enclosures (IP54/IP55/NEMA4), PLC controllers (Siemens, Schneider, or custom UI), target operating pressures (up to 40 bar or low-pressure 2-3 bar), and custom skid-mounted packages.
Exported machines meet rigorous international regulatory standards including CE declaration of conformity, ASME pressure vessel standards, UL/CSA electrical compliance, and ISO 8573 air quality metrics. Built to operate smoothly across worldwide grids (220V/380V/415V/460V at 50Hz or 60Hz).
From heavy industrial plants to precision cleanrooms, our compressed air architecture powers critical infrastructure worldwide.
Demands total freedom from hydrocarbon vapor contamination. Our water-lubricated oil-free screw compressors deliver guaranteed Class 0 air for pneumatic conveying, tablet coating, sterile bottling, and nitrogen generation systems.
Requires consistent high-pressure clean air (16-30 bar) free of moisture and oil trace. Our 4-in-1 integrated screw compressor stations pair low-dewpoint refrigerated air dryers with multi-stage high-efficiency ceramic filtration elements.
Demands severe-duty reliability under dusty, high-ambient thermal environments. Two-stage compression units powered by IP55 heavy-duty PM motors ensure continuous 24/7 air supply for pneumatic drilling and material displacement.
Expert technical answers addressing engineering selection, maintenance intervals, OEM branding, and international logistics.
Explore our extended industrial machinery line, including oil-free vacuum pumps, specialized air receivers, air dryers, and OEM replacement consumables.
