Custom 22kW to 315kW VSD Two Stage Air Compressor

The technological upgrade from line contact to surface contact sealing improves long-term efficiency by 5%–10%. The large-diameter, low-speed rotor design ensures low noise levels and an extended service life for the airend.

The Custom 22kW to 315kW VSD Two Stage Air Compressor utilizes a two-stage compression airend featuring two sets of screw rotors of different sizes. This configuration achieves optimal pressure distribution and reduces the compression ratio at each stage, resulting in energy savings of approximately 15% compared to single-stage compression under normal operating conditions. By splitting the compression process between the first and second-stage rotors, the system significantly reduces impact loads on the rotors and thermal loads on components; this not only boosts efficiency but also effectively extends the airend's service life.

High-Performance Rotors
The Custom 22kW to 315kW VSD Two Stage Air Compressor features an asymmetric profile for high operating efficiency and utilize cylindrical roller bearings to enhance load-bearing capacity. This design ensures reliable rotor operation with minimal wear and low maintenance costs, resulting in an airend that is durable, reliable, and safe.

Imported Bearings
To meet demanding speed and load requirements, the product employs high-quality SKF bearings. These bearings offer exceptional load-bearing capabilities, ensuring a long service life.

Product Specifications Table:

Note: Air delivery is measured at an operating pressure of 0.8 MPa; air delivery decreases correspondingly as pressure rises. Please refer to the actual configuration for specific parameters.

Actual Product Photos

Applications:

Textile Industry: Air-jet looms, air-jet spinning, and synthetic fiber texturing; characterized by high, continuous air consumption, where the energy-saving benefits of two-stage compression are particularly significant.
Chemical & Pharmaceutical: Pneumatic instrumentation, fermentation aeration, and material conveying; requires stable, long-term operation.
Electronics Manufacturing: SMT placement machines, pneumatic components, and cleanroom air supply; demands high pressure stability.
Machining: CNC machine tools, pneumatic fixtures, air purging, and spraying; requires standard operating pressures of 8–10 bar.
Mining & Metallurgy: Pneumatic rock drilling, mineral processing equipment, and smelting air assistance; involves high power requirements and harsh operating conditions.
Food & Beverage: Filling, blow molding, packaging, and pneumatic conveying; requires high air purity.
Power Industry: Instrument air, pulse-jet dust cleaning, and air supply for desulfurization processes.

FAQ：

1. Can two-stage compression really save 15% more energy than single-stage compression?
Yes. At the same power and pressure, two-stage compression lowers the compression ratio for each stage, allowing both stages to operate within their high-efficiency ranges. Field data from multiple users shows energy savings of 12%–18%, averaging around 15%. When combined with permanent magnet variable frequency technology, total energy savings can reach 25%–40%.

2. What pressure ranges are available for customization?
Standard customizable options include 0.8 MPa, 1.0 MPa, 1.3 MPa, and 1.6 MPa. Please consult our sales team regarding other specific pressure requirements.

3. What brand of bearings is used in the two-stage airend?
Imported SKF bearings (from Sweden) are used at both the front and rear ends of the airend, offering high load-bearing capacity and a long service life.

4. Are maintenance costs higher compared to single-stage compression?
No. Routine maintenance requirements (oil, air filters, oil filters, and oil separation elements) are essentially the same for both two-stage and single-stage systems. Furthermore, because the load on each stage is lower, the airend lasts longer and the interval between major overhauls is extended, resulting in lower long-term maintenance costs.

5. What are the advantages of permanent magnet variable frequency motors over standard motors?
They offer higher efficiency (IE4 class), smooth startup without mechanical shock, minimal air pressure fluctuation (≤0.02 MPa), and maintained high efficiency even at low speeds. When paired with a variable frequency drive (VFD), the system can precisely match air supply to actual air demand.

6. Is IoT-based remote monitoring available?
Yes. An optional IoT module allows you to monitor pressure, temperature, current, running time, and maintenance alerts in real-time via a mobile app; it also supports push notifications for fault alarms.