Explore our highly engineered twin-screw configurations. Offering stable performance under heavy duties, optimized for continuous-duty processes.
In modern industrial air delivery, the fixed speed rotary screw compressor stands as a fundamental engineering standard. While variable frequency solutions are appropriate for highly dynamic workflows, a fixed speed screw system remains the engineering baseline for plants that operate continuously at constant flow loads. When a facility demands constant air capacity throughout shifts, the isentropic efficiency of a fixed speed screw air end operating at its nominal sweet spot often equals or surpasses that of frequency-modulated systems operating at lower speeds.
The core mechanic depends on the continuous rotation of intermeshing helical rotors within a stator chamber. The compression process is progressive and non-pulsating. We focus on providing high performance screw blocks with precise rotor profiles (5:6 tooth ratio), mitigating internal blow-hole slippage and maximizing free air delivery per kilowatt of mechanical input. Supported by heavy-duty casting and premium roller bearings, these machines offer decades of reliability under correct service regimens.
A comprehensive technical look at how we design, test, and package our fixed speed rotary assemblies for long-term thermodynamic stability.
Utilizing high-grade asymmetrical profile technology, our air ends minimize internal reverse flow. Every rotor pair is dynamically balanced to reduce noise emission and shaft vibration profiles.
Efficient lubricant injection provides sealing, lubrication, and heat absorption. Advanced thermal valve control maintains the discharge air above dew point to prevent condensation inside the lubricant cycle.
By opting for direct drive models with flexible elastic couplings, we eliminate transmission slippage losses common in belt systems, translating to improved Specific Energy Requirements (SER).
Across general manufacturing plants, chemical processing facilities, mining complexes, and precise laser cutting yards, pneumatic demand patterns vary. A robust air system requires careful sizing of auxiliary processing equipment alongside the primary power unit.
In high precision environments like laser cutting (which demands dry and oil-free air at pressures up to 15.5 bar), standard oil-injected setups can degrade optical lenses. To address this, we engineer integrated multi-stage systems complete with high-efficiency particulate air filters and desiccant dryers. This ensures the output air meets ISO 8573.1 Class 1-2-1 filtration standards. In heavy mining industries, our rugged two-stage 132kW and 315kW options provide raw displacement performance under high dust conditions, using multi-stage cyclone intake filters to preserve internal oil filters and separator elements.
Founded in early 2004, Shanghai Honest Compressor Co., Ltd. is a British-owned enterprise operating in Jiading District, Shanghai, China. Over two decades, the manufacturing plant has focused on expanding twin-screw compressor production, transitioning from simple assembly lines into a vertically integrated air solutions facility.
Our facility at NO. 355 Jiajian Branch Road spans precision assembly bays, motor load-testing booths, and quality control laboratories. We provide standard and specialized piston air compressors, medium and high-pressure setups, and large-scale industrial twin-screw units ranging from 3kW up to 480kW. By maintaining complete control over our assembly processes and component sourcing, we supply OEM products that adhere to strict mechanical tolerances.
Shanghai’s manufacturing base provides our production lines with structural advantages in component procurement, quality control, and logistics. Because we source key components—like high-tensile rotor blanks, IP55 motors, and digital PLC controllers—from local precision manufacturers in the Yangtze River Delta, our lead times remain highly competitive.
This localized supply chain allows us to maintain strict quality standards while minimizing manufacturing bottlenecks. Every compressor that exits our Jiading plant undergoes automated load-testing under simulated industrial conditions. This confirms the machine meets its target specific energy consumption, thermal limits, and sealing parameters before shipment.
We configure our systems to align with international regulatory frameworks, pressure vessel rules, and electrical standards.
All export configurations carry full CE documentation, verifying alignment with European machinery, electromagnetic compatibility, and low voltage directives.
Our integrated air receiver tanks can be fabricated to comply with ASME Sec VIII, simple pressure vessels directives, or national regulations based on the destination market.
We customize electrical cabinets to match local requirements, including NEMA/IEC starters, UL/CSA components, and specific mains inputs (e.g., 380V/50Hz, 460V/60Hz, 220V Single Phase).
Our design, production, and after-sales support systems are audited under ISO 9001:2015 standards, ensuring consistent manufacturing and documentation.
Discover our specialized compressor options, including energy-saving variable speed lines, oil-free configurations, and high pressure packages.
Get professional clarification on selection parameters, design principles, and maintenance programs from our engineering team.