KDOF Series Two‑Stage Oil‑Free Dry Screw Air Compressor｜SEO Product Page Copy
The KDOF Series two-stage oil-free dry screw air compressor delivers 100% pure, oil-free compressed air. Built for high-demand industries where zero contamination and stable efficiency are non-negotiable.
Share your required pressure, air flow, industry and application details. Our team will tailor a KDOF configuration and send you a precise quotation within 24 hours.
Why KDOF Series Wins Industrial Procurement
Frame the offer around purity, uptime, faster approval and easier field deployment so the page feels like a procurement-ready proposal, not just a product introduction.
What Industrial Buyers Usually Worry About
- Compressed air purity requirements that standard oil-injected units cannot meet
- Risk of product contamination in food, pharma or electronics production
- High energy cost from constant-speed compressors under variable demand
- Uncertainty of compliance with local hygiene and safety standards
- Complex maintenance and downtime for multi-stage oil-free systems
- Long lead times and unclear technical support from generic suppliers
How This Product Reduces Procurement & Operation Risks
- ISO 8573-1 Class 0 certified air eliminates contamination risks entirely
- Two-stage oil-free design delivers pure, stable air for sensitive applications
- VSD models automatically adjust airflow to match actual demand and cut energy bills
- CE/ISO certified build meets global hygiene and safety regulations
- Low-maintenance structure with wide service doors reduces planned downtime
- Factory-direct support with quick quotation, custom configuration and after-sales
Recommended Applications
Show buyers the industries and job conditions where this model is usually selected, so the page answers fit questions before they ask.
ISO 8753 Class 0 certificated:
100% Oil-free dry screw compressor produces no pollution, ensuring the purity of compressed air and safeguard your product.
Long-term high efficiency:
Kotech two-stage oil free dry screw air compressor is durable and ensures a long-term and stable compressed air production because of its optimized two stage compression design.
The Kotech two stage rotary screw air compressor have maximum efficiency and performance that can be driven up to 500kw. So it can even meet the volatile compressed air demand requirements.
Chromium Steel Rotors:
The rotors of the two-stage compression are made from stainless steel, which eliminates the risk of rotor seizing or jamming caused by corrosion.
Durable Coating:
The blasted rotors are treated using the special “Ultra-Coat” process to produce an innovative and durable coating which is resistant to temperatures of up to 300°C, because this cost-reducing coating is highly abrasion-resistant, its sealing and protection performance remains consistent even after years of operation.
High efficient air end cooling:
In areas that require cooling, the coolant directly passes through the inter layer of the air-end’s casing, taking away high temperature heat to ensure good heat dissipation and maintain good compression efficiency.
Complete unit:
Oil-free dry rotary screw compressor with two-stage compression; condensate separator, condensate drain and fibre-free pulse dampers for both compression stages; oil tank ventilation with micro-filter, ready for operation, fully automatic and silenced.
Friendly Service:
The oil-free air compressor is designed with a wide maintenance door and a swing-out cooler, which make maintenance so easy.
Siemens control system:
Full-text display, 30 languages available;soft touch icon keys; “traffic light” style, LED to indicate operating status; fully automatic monitoring and control.
Ventilation system:
Powerful ventilation and cold box design gives it excellent heat dissipation effect, ensures the low temperature inside the compressor unit.
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100% Oil Free Dry Screw Air Compressor[/caption]
The main advantages of 100% Oil Free Dry Screw Air Compressor are:
- Adopt oil free GHH air end made in Germany.
- It offers efficient compression with low operational noise, long service life and no air pollution since there is no oil involved.
- Low maintenance costs, as minimal care and maintenance is needed, resulting in lower running costs.
- Oil free screw compressor has various applications in industrial purposes, such as food and beverage, medical, electronics and many more.
- It is compact in design and can fit into any tight spaces.
- It provides a clean and dry compressed air, ideal for sensitive and critical applications.
KDOF Series Quick Selection Table
This table helps buyers quickly compare KDOF models by power, pressure and flow rate for fast configuration selection. It supports bidding documents, project review and preliminary quotation preparation. Leave any field empty to hide it on the front-end.
| Model | Discharge Pressure (Mpa) | Working Pressure (bar) | Discharge Air Volume (m³/min) | Motor Power (kw) | Voltage and IP Grade | Noise | Discharge Pipc.Dia | Dimension(mm)-L | Dimension(mm)-W | Dimension(mm)-H | Weight-Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| KDOF37W | 0.7 / 0.85 | 7 / 8.5 | 6.0 / 5.1 | 37 | 380V IP54 | 80±3 | G1-1/2 | 2247 | 1371 | 1916 | 2387 |
| KDOF45W | 0.7 / 0.85 | 7 / 8.5 | 7.7 / 6.5 | 45 | 380V IP54 | 80±3 | G1-1/2 | 2247 | 1371 | 1916 | 2497 |
| KDOF55W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 9.15 / 9.11 / 7.98 | 55 | 380V IP54 | 80±3 | G1-1/2 | 2100 | 1500 | 1790 | 2600 |
| KDOF75W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 12.51 / 11.60 / 10.81 | 75 | 380V IP54 | 80±3 | DN50 | 2300 | 1600 | 1790 | 2800 |
| KDOF90W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 13.39 / 13.37 / 12.41 | 90 | 380V IP54 | 80±3 | DN50 | 2300 | 1600 | 1790 | 3400 |
| KDOF110W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 19.96 / 18.74 / 16.40 | 110 | 380V IP54 | 82±3 | DN65 | 2800 | 1800 | 1860 | 3400 |
| KDOF132W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 23.58 / 22.13 / 19.89 | 132 | 380V IP54 | 82±3 | DN65 | 2800 | 1800 | 1860 | 3450 |
| KDOF160W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 26.85 / 25.47 / 23.51 | 160 | 380V IP54 | 82±3 | DN65 | 2800 | 1800 | 1860 | 3550 |
| KDOF185W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 29.73 / 29.65 / 26.79 | 185 | 380V IP54 | 82±3 | DN65 | 2800 | 1800 | 1860 | 3950 |
| KDOF200W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 33.49 / 33.35 / 29.89 | 200 | 380V IP54 | 85±3 | DN100 | 3100 | 2150 | 2200 | 4500 |
| KDOF220W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 35.97 / 35.92 / 33.28 | 220 | 380V IP54 | 85±3 | DN100 | 3100 | 2150 | 2200 | 5000 |
| KDOF250W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 42.85 / 42.66 / 38.30 | 250 | 380V IP54 | 85±3 | DN100 | 3100 | 2150 | 2200 | 5200 |
| KDOF280W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 46.73 / 45.64 / 42.61 | 280 | 380V IP54 | 85±3 | DN100 | 3400 | 2400 | 2200 | 6400 |
| KDOF315W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 51.41 / 51.25 / 46.47 | 315 | 380V IP54 | 90±3 | DN100 | 3400 | 2400 | 2200 | 6400 |
| KDOF355W | 0.75 / 0.85 / 1.05 | 7.5 / 8.5 / 10.5 | 58.44 / 57.89 / 50.99 | 355 | 380V IP54 | 90±3 | DN100 | 3400 | 2400 | 2200 | 6400 |
Have Questions? Contact Us
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Frequently Asked Questions
Yes. KDOF compressors are ISO 8573‑1 Class 0 certified with zero oil in the compression chamber, eliminating contamination risks for critical processes.
Perfect for food & beverage, pharmaceutical, medical, electronics, bottling, wastewater treatment, flue gas desulfurization, and cleanroom applications requiring ultra‑pure air.
Power: 37–355kW; Working pressure: 7–11bar; Capacity: 7.98–58.44m³/min; Cooling: air‑cooled & water‑cooled; Drive: fixed speed & VSD available.
Two‑stage compression provides higher efficiency, lower discharge temperature, better stability, and longer service life, especially under high‑pressure and heavy‑duty conditions.
Minimal maintenance: no oil changes, no oil separators. Only routine checks of filters, drains, and cooling system. Wide service doors & swing‑out cooler simplify upkeep.
Yes. We offer VSD models that automatically adjust airflow to match fluctuating demand, saving energy and reducing total operating cost.
