Custom 22kW to 315kW VSD Two Stage Air Compressor

Upgraded from traditional line-contact sealing to advanced surface-contact sealing technology, the rotor structure improves long-term operating efficiency by 5%–10%. Adopting large-diameter, low-speed rotor design, the air end achieves lower running noise and significantly prolonged service life.

Elily customized 22kW–315kW Two-Stage VSD screw air compressors are equipped with professional two-stage compression air ends with dual sets of differently sized screw rotors. This optimized structure realizes uniform pressure distribution and reduces the single-stage compression ratio effectively. Under standard working conditions, the two-stage compression system saves approximately 15% more energy compared with conventional single-stage compressors.

By dividing the compression workload between the first-stage and second-stage rotors, the unit greatly reduces rotor impact load and component thermal load. This structural optimization not only improves overall operating efficiency but also extends the service lifespan of the entire air end assembly.

High‑Efficiency Asymmetric Rotor Profile

The full range of 22kW–315kW two-stage VSD compressors adopts high-efficiency asymmetric rotor profiles and premium cylindrical roller bearings. This structural design enhances overall load capacity, ensures stable rotor operation with minimal abrasion, and lowers daily maintenance costs. The air end maintains durable, reliable and safe long-cycle performance.

Premium Imported SKF Bearings

To satisfy high-standard rotational speed and heavy-load industrial requirements, our compressors are fitted with authentic high-performance SKF bearings. With excellent load resistance and structural stability, the bearings deliver outstanding durability and ultra-long service life under continuous high-load operation.

Product Specifications Table:

Note: Air displacement measured at 0.8 MPa; air flow reduces with higher pressure. Actual parameters subject to specific unit configuration.

Actual Product Photos

Applications:

Textile Industry

Widely applied for air-jet looms, air-jet spinning and synthetic fiber texturing processes. The textile industry features high and continuous compressed air consumption, where the energy-saving advantages of two-stage compression deliver the most prominent economic benefits.

Chemical & Pharmaceutical Industry

Suitable for pneumatic instrument control, fermentation aeration and raw material pneumatic conveying. These production scenarios require long-term, stable and uninterrupted air supply.

Electronics Manufacturing Industry

Ideal for SMT placement equipment, pneumatic actuating components and cleanroom compressed air systems. Electronic production demands extremely stable air pressure to ensure precise processing quality.

Mechanical Processing Industry

Covers CNC machine tools, pneumatic clamping fixtures, equipment air purging and spraying operations. Standard working pressure of 8–10 bar fully meets daily machining production requirements.

Mining & Metallurgy Industry

Applied for pneumatic rock drilling, mineral processing equipment and smelting auxiliary air supply. It adapts to high-power consumption demands and severe, harsh working environments in mining and metallurgical sites.

Food & Beverage Industry

Used for product filling, bottle blow molding, automated packaging and material pneumatic conveying. The system provides high-purity compressed air that complies with food-grade production standards.

Power Industry

Supplies stable instrument air for power plant control systems, pulse-jet dust removal and desulfurization process air supply.

FAQ：

Q: Can two-stage compression truly cut energy consumption by 15% versus single-stage compression?

A: Absolutely. With identical power output and working pressure, two-stage compression reduces the compression ratio of each stage, enabling both compression stages to run within their optimal high-efficiency range. Actual field data collected from numerous clients records energy savings between 12%–18%, with an average saving of roughly 15%. When integrated with permanent magnet VSD technology, the overall energy-saving rate can hit 25%–40%.

Q: What pressure values can be customized?

A: Our standard customizable pressure specifications cover 0.8 MPa, 1.0 MPa, 1.3 MPa and 1.6 MPa. Contact our sales team if you have other special pressure demands.

Q: What bearing brand is fitted inside the two-stage air end?

A: Swedish imported SKF bearings are installed on both the front and rear sides of the air end, featuring superior load capacity and an extended service lifespan.

Q: Does two-stage compression bring higher maintenance expenses than single-stage models?

A: No. Consumables for regular upkeep, such as compressor oil, air filters, oil filters and oil separators, are fully interchangeable with single-stage compressors. Moreover, reduced load on each compression stage extends the service life of the air end and prolongs the cycle between major overhauls, lowering total long-term maintenance costs.

Q: What benefits do permanent magnet VSD motors have over conventional fixed-speed motors?

A: They deliver IE4 ultra-high energy efficiency, soft startup with no mechanical impact, tiny air pressure fluctuation (≤0.02 MPa), and sustain high efficiency even under low-speed operation. Matched with a variable frequency drive (VFD), the system automatically adjusts air output to precisely match real-time air consumption demand.

Q: Does this compressor support IoT remote monitoring functions?

A: Yes. An optional IoT module is available. Users can view real-time operating data including pressure, temperature, electric current and cumulative running hours, as well as receive maintenance reminders via mobile APP. The system also sends instant push alerts for equipment faults.