Built-in high efficiency refrigeration air dryers, variable speed drive, and oil-cooled IE4 permanent magnet synchronous motor.
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Integrated design combining rotary screw compressor, air receiver tank, refrigerated dryer, and multi-stage precision filters.
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100% oil-free compressed air certified, utilizing water lubricating technology for medical, food, and clean electronics production.
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Two-stage compression minimizes compression ratio across each stage, dramatically reducing energy consumption up to 15%.
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Features premium PM variable frequency motor cooled by lubricating oil, securing low operating temperature and long lifespan.
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Compact scroll compressor featuring continuous compression cycles for ultra-quiet operation and low vibrations.
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Specifically configured for laser cutting applications requiring dry, oil-free high pressure air to protect the optical lens.
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Engineered for sound isolation, featuring heavy-duty acoustic foam casing and low-frequency vibration mounts.
View DetailsIn heavy industrial environments, compressed air is often referred to as the "fourth utility." Selecting the correct horsepower rating is critical to balancing initial capital expenditure with lifelong operational costs. The 75 Hp (55 kW) rotary screw air compressor stands as the industry-wide "sweet spot" for mid-to-large-scale manufacturing operations, packaging lines, textile plants, and chemical processing facilities.
At 75 HP, the compressor delivers an impressive volume of air—typically ranging from 250 to 360 cubic feet per minute (CFM) (approx. 7.0 to 10.2 m³/min) depending on the pressure rating (typically 7 to 13 bar). This volume provides sufficient pneumatic energy to drive heavy automation, high-tonnage presses, large-format sandblasting, and multi-tool manufacturing cells simultaneously without localized pressure drops.
By adjusting motor frequency in real-time, PM VSD systems cut energy consumption by up to 35-50% compared to standard fixed speed compressors under varying air demands.
Dividing the compression ratio into two stages lowers internal friction, improves thermodynamic volumetric efficiency, and reduces thermal stress on rotor bearings.
Optimized internal acoustic air paths, combined with low vibration direct couplings, keep noise levels under 65–68 dB(A), creating a safer working environment.
The following performance matrix defines our heavy-duty industrial 75 HP air compressor configurations. Every machine is calibrated to deliver optimal Free Air Delivery (FAD) compliant with ISO 1217 Annex C guidelines.
| Model Series | Nominal Power (HP/kW) | Working Pressure (Bar/PSI) | FAD Capacity (m³/min / CFM) | Cooling Method | Noise Level (dB(A)) |
|---|---|---|---|---|---|
| HC-75PM-VSD (Standard VFD) | 75 HP / 55 kW | 8 Bar / 116 PSI | 10.2 m³/min / 360 CFM | Air Cooled | 66 ± 2 dB(A) |
| HC-75PM-10 (High Pressure VSD) | 75 HP / 55 kW | 10 Bar / 145 PSI | 9.1 m³/min / 321 CFM | Air Cooled | 67 ± 2 dB(A) |
| HC-75PM-13 (Heavy Duty VSD) | 75 HP / 55 kW | 13 Bar / 188 PSI | 7.8 m³/min / 275 CFM | Air Cooled | 68 ± 2 dB(A) |
| HC-75TS-2 (Two-Stage PM VSD) | 75 HP / 55 kW | 8-10 Bar / 116-145 PSI | 11.4 m³/min / 402 CFM | Air / Water Cooled | 65 ± 2 dB(A) |
| HC-75OF (Oil-Free Water Lube) | 75 HP / 55 kW | 8 Bar / 116 PSI | 9.5 m³/min / 335 CFM | Water Cooled | 64 ± 2 dB(A) |
Founded in early 2004, Shanghai Honest Compressor Co., Ltd. is a British-owned premier manufacturer located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China. Over two decades of specialized engineering, we have consolidated our position as a globally respected twin-screw air compressor manufacturing base.
Leveraging China's world-class industrial cluster, we source raw materials and manufacture high-precision rotary screw air ends with micron-level tolerances. Our state-of-the-art production facility integrates advanced assembly lines, comprehensive testing stations, and quality control systems to ensure every unit leaving our floor exceeds international efficiency indices.
Exporting large industrial machinery requires meticulous compliance with geographical regulations. Shanghai Honest Compressor guarantees that all custom 75 HP compressors are fully built and certified in compliance with:
Operating a 75 HP machine means downtime is not an option. We provide proactive localized support to ensure continuous factory uptime:
How do real-world facilities utilize the reliable airflow of a 75 HP (55kW) rotary screw air compressor? We custom-tailor setups to match strict localized environmental criteria:
Laser cutting requires high pressure (typically 15.5 bar or higher) to blow away molten metal cleanly. A 75 HP system paired with integrated dryers and high-efficiency filtration blocks micro-impurities from contaminating optical lenses.
In assembly shops, pneumatic tools, sprayers, and robotic arms run simultaneously. The 75 HP PM VSD adapts FAD continuously to match fluctuating pneumatic loads without cycling the motor unnecessarily.
Requires clean, dry, oil-free air to prevent contamination. Our 75 HP Water Lubricated Oil-Free Rotary Screw Air Compressor guarantees ISO 8573-1 Class 0 oil-free air, eliminating downstream contamination risks.
The global push towards environmental sustainability is reshaping the engineering of air compressors. Industrial plants are under strict regulatory pressures to lower carbon footprints, putting energy-inefficient equipment under scrutiny.
Modern trends focus on Intelligent Compressor Networks, where multiple VSD units are orchestrated by a central PLC master controller. This setup dynamically allocates load demands, ensuring no single unit runs in an inefficient idle state. Furthermore, heat recovery modules are being integrated into 75 HP oil systems, capturing up to 80% of electrical input energy to heat industrial water or facility interiors, achieving massive energy savings.
We actively showcase our latest compressor technologies worldwide, sharing engineering updates and connecting with global distribution partners. View our trade show highlights below:
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 a high compound annual growth rate. This demand is closely linked to clean industrial dry air requirements, prompting us to expand our smart oil-free technology.
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Heavy-duty dry type oil-free rotary screw compressor designed for textile, food packaging, and chemical industries.
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Compact design, quiet operation, and easy maintenance. Ideal for smaller metal workshops and auto repair garages.
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Integrated with 300L air tank and refrigerated dryer. Plugs directly into your power grid for immediate air supply.
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Highly efficient air compressor range utilizing advanced oil-cooled permanent magnet synchronous motors (PMSM).
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Designed for heavy industrial use where energy supply is constant and fixed air volume output is preferred.
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Heavy-duty refrigerated compressed air dryer designed to lower dew points and remove system moisture.
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Cost-efficient variable speed air compressor systems tailored for emerging industrial markets.
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Designed for heavy industrial mining, delivering high-volume air output at optimal specific power ratings.
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