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ES Screw Air Compressor
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The ES Series Screw Air Compressor is a high-efficiency permanent magnet variable speed unit for industrial applications. IE4 motor technology with variable speed control matches air output to demand, saving 30–50% energy versus fixed-speed units. Coaxial drive eliminates transmission losses. Liquid-cooled IP65 motor housing provides complete dust and water jet protection for demanding environments.
The compressor features a compact, modern design with easy maintenance access. Available in nine models from 2.1 to 22.5 m³/min at 0.8 MPa, with power ratings of 15–110 kW. Serves chemical, textile, mechanical, automotive, injection molding, rubber, metallurgy, and cement industries. Ideal for facilities seeking reduced operating costs and reliable compressed air supply.
Key Features
IE4 Permanent Magnet Motor With Variable Speed Control
IE4 permanent magnet motor delivers superior efficiency by eliminating rotor losses. Variable speed operation matches air output to actual demand, saving 30–50% energy versus fixed-speed compressors. IP65 liquid-cooled enclosure provides complete dust and water jet protection, ensuring reliable operation in harsh industrial environments including cement, textile, and chemical plants.
Coaxial Drive Design for Zero Transmission Loss
Direct coupling between motor and screw air end eliminates belts, gears, and associated energy losses. Every kilowatt converts efficiently to compressed air. Fewer moving parts reduce maintenance, with no belts to tension or replace. Compact integration also minimizes footprint, simplifying installation in space-constrained facilities while improving reliability and lowering operating costs.
Liquid-Cooled Motor Housing With IP65 Protection
Innovative liquid-cooled housing uses compressor coolant to remove heat, maintaining optimal temperatures in high-ambient conditions. Fully sealed enclosure provides IP65 rating—complete dust ingress protection and resistance to low-pressure water jets. Eliminates cooling fans for quieter operation. Ideal for dusty, humid, or contaminant-rich environments where standard motors would fail prematurely.
Compact, Modern Design With Easy Maintenance Access
Beautiful new appearance combines aesthetics with practical functionality. Strategically placed access panels allow routine maintenance—oil changes, filter replacement, inspection—without disassembly or special tools. Compact footprint frees valuable production floor space. Thoughtful integration of service access and space efficiency prioritizes operator convenience and simplifies facility layout planning.
Wide Capacity Range With Nine Model Options
Nine models from ES-20 to ES-150-2i cover capacities of 2.1–22.5 m³/min at 0.8 MPa discharge pressure, with power ratings from 15 kW to 110 kW. Includes ES-20, ES-30, ES-50, ES30-2i, ES50-2i, ES75-2i, ES100-2i, ES125-2i, and ES150-2i. Select optimal size to avoid oversizing or capacity limitations, simplifying system design for multiple compressor installations.
Energy-Efficient, Low-Noise Design With Smart Control
Combination of IE4 motor, variable speed, and direct drive delivers significant cost savings—typically 1–3 year payback. Liquid cooling and acoustic insulation enable quiet operation suitable for production areas without separate rooms. Optional PLC control with remote monitoring provides real-time data, alarm notifications, and multi-compressor sequencing for predictive maintenance and plant integration.
Technical Specifications
| Model | Discharging Pressure (MPa) | Discharging Volume (m³/min) | Power (kW/HP) | Air Outlet (inch) | Weight (kg) | Overall Dimensions (L×W×Hmm) |
| ES-20 | 0.8 | 2.1 | 15/20 | 1" | 245 | 300x750x1130 |
| ES-30 | 0.8 | 3.4 | 22/30 | 1-1/4" | 325 | 950x820x1150 |
| ES-50 | 0.8 | 6 | 37/50 | 1-1/4" | 460 | 250x900x1300 |
| ES30-2i | 0.8 | 4.3 | 22/30 | Gl-1/2" | 620 | 340*1075*1320 |
| ES50-2i | 0.8 | 6.9 | 37/50 | G1-1/2" | 860 | 1550*1150*1480 |
| ES75-2i | 0.8 | 11.4 | 55/75 | G2" | 1280 | 750*1280*1600 |
| ES100-2i | 0.8 | 14.9 | 75/100 | G2" | 1500 | 1800*1300*1700 |
| ES125-2i | 0.8 | 8.2 | 90/125 | DN65 | 2200 | 2650*1650*1800 |
| ES150-2i | 0.8 | 22.5 | 110/150 | DN80 | 3000 | 2800*1650*1800 |
FAQ
What is a screw air compressor used for?
A screw air compressor provides compressed air for industrial applications including manufacturing, automation, injection molding, textile processing, and pneumatic tools.
What is a permanent magnet air compressor?
A permanent magnet air compressor uses an IE4/IE5 efficiency permanent magnet motor with variable speed control, achieving significant energy savings over standard induction motors.
What is the capacity range of the ES series?
The ES series offers capacities from 2.1 to 22.5 m³/min at 0.8 MPa discharge pressure, with power ratings from 15 kW to 110 kW across nine models.
What is IP65 protection rating?
IP65 indicates complete dust protection and protection against low-pressure water jets, ensuring reliable operation in demanding industrial environments.
How much energy can I save with variable speed control?
Variable speed screw compressors typically achieve 30-50% energy savings compared to fixed-speed units, especially in applications with variable air demand.
What industries can use the ES series?
The ES series serves chemical, textile, mechanical processing, automotive, injection molding, rubber, metallurgy, cement, and food processing industries.
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