Shanghai Honest Compressor Co., Ltd. is a premier British-owned manufacturer dedicated to providing performance-oriented twin-screw air compressor designs. Founded in early 2004, our production base spans the Malu Industrial District in Jiading, Shanghai, shipping dynamic air systems worldwide.
Direct-to-industry solutions designed for heavy continuous cycles, high pressure applications, and extreme operating parameters.
Traditional rotary compressors often face significant efficiency drops due to internal thermal buildup and air leakage paths (blow-hole effect). Our screw compressors utilize advanced 5:6 asymmetric rotor profiles, engineered to minimize volumetric leakage while ensuring a larger containment space per cycle. This configuration allows lower rotation speeds (RPM) while maintaining high displacement rates, decreasing bearing wear, and lowering mechanical noise levels (below 63 dB(A) in standard configurations).
By implementing Two-Stage Compression, the pressure ratio is divided equally across two stages. This reduces the interstage temperature profile, pushing the process closer to isothermal compression—the absolute peak of thermodynamic efficiency. A special inter-cooling system utilizing injected lubricant effectively cools the compressed air between the first and second stages, yielding an energy savings of 15% to 30% compared to typical single-stage layouts.
Tailor-made system architectures meeting localized industrial demands and environmental compliance regulations worldwide.
Specialized 15.5 bar high-pressure air systems deliver clean, dry, oil-free cutting gas. Prevents localized heat distortion and eliminates carbonized edge lines on stainless steel, aluminum, and brass workpieces.
Provides constant-pressure control loops for pneumatic actuators, assembly robots, and process logic controllers, avoiding system downtime from variable air supply or system pressure dropouts.
Heavy-duty diesel-powered rotary screw systems (incorporating Cummins/Yuchai/Weichai engines) ensure operations in locations lacking reliable power grid connections.
The XD-8A represents our core philosophy of space-saving design combined with premium operating stats. Engineered for compact spaces and workshops requiring low-noise operations, it delivers efficient and consistent air delivery under rigorous industrial cycles.
"The integrated elastic coupling direct-drive setup ensures zero energy loss from belt slip, delivering the motor's power directly to the female rotor shaft."
| Parameter | Technical Metric |
|---|---|
| Power Capacity | 7.5kW / 10HP |
| Free Air Delivery (FAD) | 0.8 to 1.2 m³/min |
| Working Pressure Range | 7 to 12 bar |
| Starter System | Star-Delta Starter (Soft transition) |
| Drive Connection | Direct Driven, Elastic Coupling |
| Unit Weight & Dimensions | 178 kg | 850 * 670 * 870 mm |
Shanghai Honest Compressor Co., Ltd. is a leading British-owned enterprise founded in early 2004. Located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China, we operate a large-scale manufacturing facility specialized in high-performance twin-screw air compressors.
As a global supplier of complete air treatment systems, our inventory covers a range of piston air compressors (low pressure, medium pressure, high pressure, oil-free configurations), rotary screw air compressor systems (ranging from 3KW to 480KW), gas separation equipment, refrigerant compressors, cold dryers, line filters, and ceramic membrane filtration systems, alongside premium consumables and accessories.
We actively participate in international exhibitions and industrial summits to demonstrate modern pneumatic developments and dry vacuum technologies. Based on recent MRFR analysis, the dry vacuum pump market size is valued at US$ 5.97 billion in 2024 and is projected to grow from US$ 6.17 billion in 2025 to US$ 8.28 billion by 2034, registering a steady compound annual growth rate. This structural transition to dry/oil-free compressor systems drives our development of energy-saving PM-motor screw systems and oil-free water-lubricated configurations.
Our continuous participation in major trade events highlights our technical contribution to clean, oil-free vacuum technologies.
Explore our customizable OEM systems, multi-stage compression units, and smart variable speed configurations designed for global operations.
By prioritizing smart sensors, low-carbon footprints, and advanced materials, we align our product developments with international carbon-neutral targets.
Continuous analysis of thermodynamic parameters via integrated PLC systems. Enables predictive maintenance notifications, monitoring of separator differential pressure, and remote optimization of energy profiles.
Upgrading water-lubricated technologies for 100% oil-free Class 0 certified air, ideal for cleanrooms, high-grade food processing, and demanding pharmaceutical environments.
Capturing and repurposing up to 75% of waste heat generated during the compression cycle. Recovered thermal energy can heat sanitary water or support industrial heating systems.
To supply global markets, all screw compressor systems undergo strict certification testing, ensuring compliance with international directives and national regulations. We provide certified machines compliant with European CE directives, ISO 9001 quality systems, ASME standards, and regional energy-efficiency mandates.
Whether you require custom wiring configurations (such as 380V/50Hz/3Ph or customized 460V/60Hz profiles) or special explosion-proof protection levels for petroleum and mining applications, our design team coordinates configurations to comply with localized occupational health and safety requirements.
Every unit undergoes a continuous 4-hour dynamic load test before crating and dispatch. Our QC reports detail vibration levels, rotor bearing temperatures, oil separation efficiency, and specific energy consumption metrics.
Answers to key technical questions about rotary screw compressor design, operations, and optimization.
Permanent Magnet Variable Speed Drive (VSD PM) screw compressors adjust motor rotation speeds to match real-time air demands. Unlike fixed-speed units that continue running unloaded (wasting up to 70% of full power without producing compressed air), VSD systems slow down or speed up dynamically. This preserves constant line pressure, prevents unnecessary blow-down cycles, and reduces energy consumption by up to 30%.
Compression generates heat. In a single-stage system, high compression ratios generate significant heat, reducing air density and increasing the power required to compress the air. Two-stage systems divide the work across two distinct chambers, using interstage oil cooling to reduce temperatures between stages. This keeps the air cooler and denser, reducing specific power consumption and saving up to 15% in energy costs.
A "Four-in-One" system integrates the rotary screw compressor, air receiver tank, refrigerated air dryer, and multi-stage particulate filters into a single, compact cabinet. This design reduces installation space by up to 60%, eliminates interconnecting piping pressure drops, and lowers installation costs. It delivers clean, dry air directly out of the box, making it ideal for precision manufacturing, laser cutting, and automotive body shops.
Routine maintenance is essential for peak efficiency: oil filters and air filters should be checked or replaced every 2,000 operational hours. The oil separator element requires replacement every 4,000 hours to maintain low carryover rates (below 3 ppm). In water-cooled variants, regular heat exchanger flushes prevent scale deposits, ensuring stable operating temperatures and preventing automatic thermal shutdowns.
