Engineered for extreme longevity, this direct-drive rotary screw machine spans power ranges from 7.5kw up to 535kw. Ideal for high-pressure operations requiring 7 to 13bar limits with maximum thermodynamic output and low energy loss.
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Designed for continuous duty cycles under standard environments, the E-22 belt drive series balances economic entry pricing with reliable performance, utilizing premium-grade drive belts and optimized tension systems.
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Featuring a two-stage thermodynamic compression design alongside permanent magnet (PM) motor dynamics and precise VSD inverter control, this 75HP system maximizes volumetric efficiency and reduces energy waste by 35%.
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This single-stage scroll compressor relies on innovative oil-cooling channels alongside a permanent magnet variable frequency control set to achieve ultra-quiet and smooth gas compression cycles.
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Specifically developed for high-precision laser cutting operations requiring high pressure. It delivers ultra-clean, moisture-free compressed air consistently at 20 bar to protect focusing lenses and ensure clean cuts.
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An all-in-one heavy-duty solution featuring integrated refrigeration, adsorption drying systems, and an integrated air tank. Best suited for compact factory floors requiring immediate plug-and-play dry clean air.
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High-grade twin-screw dry vacuum pump matching variable frequency motor controls. It offers stable, oil-free vacuum generation, minimizing environmental footprint in process manufacturing plants.
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A low-friction, air-cooled, two-stage direct-drive design. Features advanced dynamic thermal routing to guarantee optimal cooling rates and long rotor life under extreme environments.
View Details>Within the heavy-duty manufacturing and processing landscape, the 250 HP (horsepower) compressor system represents a vital operational link. Producing air deliveries generally ranging from 950 CFM to 1,200 CFM (Cubic Feet per Minute) based on operating pressures between 7 and 13 bar, these systems drive critical plant infrastructure. Engineering a unit of this capacity demands high volumetric efficiency, thermal regulation, and structural safety to prevent downtime.
For engineering departments, selecting the proper drive structure (direct drive, variable speed drive, or two-stage tandem air ends) is vital. Standard single-stage screw profiles work well under fixed load patterns. However, modern facilities increasingly deploy VSD PM (Variable Speed Drive Permanent Magnet) motors and two-stage air ends. By dividing the compression ratio across two distinct air ends, internal volumetric leakage is significantly reduced, yielding energy savings of 10% to 15% compared to single-stage equivalents.
A typical 185 kW (250 HP) compressor operating at a standard 8.5 bar output must manage high thermal loads. Industrial screw compressors from Shanghai Honest Compressor Co., Ltd. utilize high-precision rotors with asymmetrical profiles (5:6 ratio) to ensure continuous operational stability. Below is a comparison detailing the operational performance of different 250 HP configurations:
| Parameters | Standard Fixed-Speed | VSD Permanent Magnet (Single-Stage) | Two-Stage VSD PM Compressor |
|---|---|---|---|
| Nominal Power | 185 kW / 250 HP | 185 kW / 250 HP | 185 kW / 250 HP |
| Volumetric Flow (FAD) | ~1050 CFM (29.7 m³/min) | 320 - 1100 CFM (Variable) | 350 - 1180 CFM (High Output) |
| Specific Power Consumption | 6.4 kW/(m³/min) | 5.9 kW/(m³/min) | 5.4 kW/(m³/min) |
| Motor Insulation | Class F | Class H (IP55/IP65) | Class H (IP65 Oil-Cooled) |
| Startup Mode | Star-Delta (High Current Spike) | Soft Start (Zero Surge) | Soft Start (Zero Surge) |
"Selecting the proper compressor design directly impacts your plant's operating costs. Modern two-stage VSD systems can save tens of thousands of dollars annually in energy expenses, while also reducing wear on mechanical components."
Sourcing an ODM 250 HP compressor from China offers clear advantages in terms of manufacturing scale, component sourcing, and technical integration. As a leading manufacturer, Shanghai Honest Compressor Co., Ltd. operates a large-scale manufacturing enterprise in Malu Town, Jiading District, Shanghai. By keeping core casting, precision machining, rotor balancing, and motor production in-house, Chinese factories can deliver high-performance units at competitive prices.
These supply chain advantages include:
At 250 HP, these systems deliver the high air volume and pressure needed for heavy industrial applications:
International procurement requires compliance with local standards. Shanghai Honest Compressor Co., Ltd. customizes its systems to meet specific market regulations:
Founded in early 2004, Shanghai Honest Compressor Co., Ltd. is a British-owned enterprise. The manufacturing plant is located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. We have grown into a leading manufacturer of twin-screw air compressors in China and a trusted supplier of air system solutions globally.
We provide a comprehensive range of air compression systems, including piston compressors (low, medium, and high pressure, oil-free designs), twin-screw compressors (3KW-480KW), gas separation equipment, refrigerant compressors, refrigerated air dryers, line filters, and advanced filtration systems.
Shanghai Honest Compressor Co., Ltd. regularly participates in major industrial exhibitions worldwide to showcase our latest compression technologies and connect with global partners.
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 steady growth driven by demands in semi-conductor, chemical and pharmaceutical processes.
Shanghai Honest Compressor continues to innovate in screw vacuum pump manufacturing to support this transition toward dry, oil-free vacuum solutions.
Single-stage compressors compress air to the target pressure in a single compression cycle. A two-stage compressor divides the process between two separate sets of rotors. This design lowers the compression ratio per stage, which minimizes volumetric leakage, reduces thermodynamic stress, and increases energy efficiency by 10-15%.
Traditional fixed-speed compressors run at a constant speed, venting excess air when demand drops. A VSD system uses an inverter to adjust the motor's speed to match the plant's real-time air demand. This eliminates wasteful unload cycles and can reduce energy consumption by up to 35%.
We customize the electrical panels and controls for our export models to meet the requirements of the destination country, including UL/cUL certifications for North America, CE compliance for the European Union, and specific regional voltages like 380V, 415V, 460V, or 575V at either 50Hz or 60Hz.
Daily checks should monitor oil levels and discharge temperatures. Air filters should be serviced or replaced every 2,000 operating hours. Oil filter and separator elements should be replaced every 4,000 hours, along with a complete oil change, depending on environmental conditions and the type of lubricant used.
Our production facility is located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. We stock a complete range of spare parts, including rotors, filters, separators, and valves, which can be shipped globally via air express to minimize customer downtime.
Designed for critical applications in food, pharmaceutical, and electronic manufacturing. Uses water lubrication to deliver 100% oil-free Class 0 certified compressed air.
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Features dual permanent magnet motors that drive the first and second stages independently. This allows each stage to run at its optimal speed, maximizing energy savings.
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A heavy-duty 132kW (180HP) two-stage compressor built for demanding mining and industrial operations that require continuous reliability under heavy loads.
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Designed for hazardous environments. Features an explosion-proof design that integrates the screw compressor, dryer, filters, and air receiver into a single, compact footprint.
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Combines double-screw design with a VSDPM motor and precision inverter control to maintain stable system pressure and reduce energy consumption under varying load patterns.
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Designed for operations with steady, continuous base-load air demands. Offers high reliability and simplified maintenance across a capacity range of 7.5kW to 400kW.
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A compact 10HP (7.5kW) rotary screw compressor designed for light manufacturing and automotive workshops requiring reliable, continuous-duty air.
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A space-saving 4-in-1 system that integrates a 7.5kW compressor, integrated air dryer, particulate filters, and receiver tank for plug-and-play installation.
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