Designed for continuous industrial duty, integrating a highly reliable double screw air end with an active permanent magnet motor and an optimized frequency inverter system to maximize energy efficiency.
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Features dual compression elements driven directly. The interstage cooling optimization minimizes power usage per cubic meter of air delivered while maintaining extreme reliability.
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Utilizes active oil injection cooling for the permanent magnet motor, protecting the Neodymium magnets against high heat and ensuring reliable operations in high-ambient environments.
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Compact design operating on a single-phase 220V power supply. Provides professional-grade efficiency and pressure output for workshops and small-scale operations.
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An engineering breakthrough coupling two separate permanent magnet motors with twin screw elements. Delivers precise velocity matching for unrivaled energy savings.
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Highly adjustable pressure settings from 0.7 to 1.25Mpa. Adapts dynamic speed parameters to reduce standard unloading energy losses by up to 30%.
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Broad range of power sizes from 10HP to 100HP. Integrated noise suppression enclosure ensures quiet operation within residential-adjacent workspaces.
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Heavy duty 75KW industrial screw compressor configured for medium-to-large fabrication plants. Direct coupled layout eliminates belt friction loss.
Read Technical Specifications >Traditional fixed-speed air compressors operate on a load/unload control cycle that introduces substantial volumetric and thermodynamic losses. When demand drops, the system unloads but continues to run the motor at full speed, consuming up to 30-40% of its rated power without producing useful compressed air. VFD technology eliminates this by dynamically scaling the motor's rotational speed (RPM) to match the real-time air demand. This continuous matching reduces energy consumption, stabilizes system pressure to within ±0.01 MPa, and avoids high-current motor-starting spikes.
Permanent Magnet Synchronous Motors (PMSM) rely on neodymium-iron-boron (NdFeB) high-energy magnets integrated directly into the rotor, eliminating the rotor copper losses associated with standard induction motors. PMSM motors maintain ultra-high efficiency (conforming to IE4 and IE5 standards) even at extremely low rotational speeds. This differs from asynchronous motors, whose efficiency curves drop significantly during partial-load conditions. The lack of slip and rotor magnetization currents also yields a power factor close to 1.0 across the entire operating speed range.
By connecting the motor shaft directly to the male rotor of the screw air end without gears, belts, or pulleys, the system achieves 100% transmission efficiency. Traditional mechanical setups lose 2% to 5% of energy to friction, slip, and radial load stresses on bearings. The direct-drive configuration eliminates these energy leaks while removing wear components like drive belts and radial tensioners. This increases the mean time between failures (MTBF), lowers vibration levels, and reduces ambient operating noise to below 63 dB(A).
| Performance Indicator | Direct-Driven VFD PM Screw | Gear-Driven Fixed Speed Screw | Belt-Driven Asynchronous Screw |
|---|---|---|---|
| Transmission Loss | 0% (Direct Shaft-to-Shaft Alignment) | 1.5% - 3.0% (Gearbox Resistance) | 3.0% - 6.0% (Belt Slip and Elasticity) |
| Motor Efficiency Classification | IE4 / IE5 Ultra-Premium Class | IE2 / IE3 Standard Premium Class | IE1 / IE2 Standard Class |
| Energy Performance under Partial Load | Maintains 95%+ efficiency down to 25% speed | Efficiency drops steeply below 75% load | Substantial energy lost during unload cycles |
| Pressure Stability | ±0.01 MPa (Continuous Modulation) | ±0.05 MPa (On/Off Control Window) | ±0.08 MPa (Wide Control Deadband) |
| Maintenance Requirements | No belts, gears, or coupling bushings to replace | Gearbox oil changes and gear alignment checks required | Frequent belt tension adjustments and regular replacements |
| Acoustic Output | Extremely Quiet (58 - 63 dB(A)) | Moderate (68 - 75 dB(A)) | High (72 - 82 dB(A)) |
High-power fiber laser systems demand stable, high-pressure, moisture-free compressed air (often at 15.5 bar) to clean the cut path and prevent lens contamination. Our specialized 15.5 bar direct-driven VFD screw air compressors deliver continuous volume flow without pressure fluctuations. This helps prevent edge dross and maintains cutting quality across stainless steel, aluminum, and carbon steel plates.
To comply with stringent sanitary regulations, pharmaceutical manufacturers must eliminate any risk of product contamination. Our 100% oil-free, water-lubricated VSDPM screw air compressors provide high-purity compressed air that meets ISO 8573-1 Class 0 standards. These units utilize high-grade components to protect products and packaging from oil vapor, ensuring clean operations.
Modern industrial assembly plants rely on pneumatic actuators, conveyor systems, and robotic arms that operate on variable work cycles. Using standard fixed-speed air compressors often leads to high energy loss during idle times. Our direct-driven VFD permanent magnet compressors adjust their motor output in real-time, matching the system's fluctuating demand. This helps lower overall plant operating costs and improves the efficiency of your equipment.
Founded in early 2004 as a British-owned enterprise, Shanghai Honest Compressor Co., Ltd. has grown to become a leading manufacturer of twin-screw air compressors and advanced air system solutions in China.
Our primary manufacturing facility is located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. Spanning extensive production spaces, we engineer, build, and distribute high-efficiency air delivery systems, including:
The integration of IoT gateways and standard cloud networks enables real-time diagnostic monitoring for modern air compressor systems. Our next-generation smart controllers continuously analyze vital operating parameters, including ambient humidity, inlet pressure, vibration levels, and discharge temperature. Analyzing this sensor data helps identify early signs of potential component wear. This enables proactive maintenance scheduling, reduces unexpected downtime, and optimizes energy efficiency during operation.
We are actively developing and upgrading our PM motors to utilize advanced, high-coercivity Neodymium Iron Boron (NdFeB) magnetic compounds. These materials feature high thermal demagnetization resistance, enabling stable operations even at temperatures exceeding 180°C. This allows our permanent magnet motors to maintain high efficiency and performance levels during prolonged, heavy-load operations, even in challenging environmental conditions.
We are expanding our product lineup with advanced water-lubricated, oil-free VSDPM screw compressors. These units use pure water to seal, lubricate, and cool the rotor chambers. This design delivers clean, oil-free air while maintaining high volumetric efficiency. Eliminating oil lubrication also simplifies maintenance, reduces the environmental impact of oil disposal, and lowers the risk of piping contamination.
High-capacity 110Kw rotary compressor utilizing two-stage compression technology. Combines permanent magnet VFD control with efficient air cooling for demanding industrial applications.
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Designed for critical applications requiring clean, dry air. Uses micro-heat regeneration to minimize purge air losses while maintaining low dew points.
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Provides reliable moisture control down to a 2-10°C pressure dew point. Compatible with eco-friendly refrigerants to ensure safe, stable operations.
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High-power 315kw industrial unit delivering 1.3Mpa pressure. Engineered to meet Level 1 energy efficiency standards for large manufacturing installations.
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Utilizes pure water lubrication to ensure clean, oil-free operations. Ideal for electronics, pharmaceutical, and food-grade packaging processes.
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Designed specifically to meet the high pressure and volume requirements of laser cutting operations, helping ensure clean, precise cuts.
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An integrated station combining a 22kw compressor, an air dryer, an adsorption dryer, and an air receiver tank. Provides a space-saving plug-and-play solution.
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Combines the air compressor, tank, dryer, and filtration system into a single unit. Designed for compact workshops and easy installation.
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