Oil-free Class 0 Screw Air Compressor

As trusted China Oil-free Class 0 Screw Air Compressor manufacturers, DECHUAN supplies advanced systems with dual permanent magnet inverter drives. This setup prevents pressure fluctuations and cuts energy consumption by up to 35%, helping international factories lower operational costs cleanly.

Cross-Industry Applications

Standard air compressors often leak trace oil vapor through worn seals, ruining sensitive product batches and causing expensive production line shutdowns. The certified air compressor completely removes this risk by using physical isolation seals and water-cooled jackets, making it ideal for the following industrial sectors:

• Electronics & Semiconductor Industry: Used in cleanroom chip fabrication and circuit board blowing. Zero oil presence avoids microscopic dust adhesion on silicon wafers, preventing product batch defects.

• Pharmaceutical & Medical Industry: Powers tablet compression, packaging machines, and hospital breathing air networks. Guarantees 100% pure air compliance to eliminate product contamination risks.

• Food & Beverage Processing: Ideal for product sorting, bottle blowing, and clean packaging. Eliminates food safety hazards caused by traditional compressed air oil mist bleeding into the product lines.

• Automotive Painting & Coating: Supplies high-volume air to automated spray-painting arms. Prevents cratering, fish-eyes, and adhesion failures on automotive surfaces by blocking all oil traces.

Key Technical Parameters

Our heavy-duty structure ensures the Oil-free Class 0 Screw Air Compressor maintains stable performance under continuous 24/7 high-load operations without thermal degradation:

• Displacement Volumetric Range: 4.2 to 148.5 m³/min based on factory system requirements.

• Rated Motor Power Selection: 55 kW to 900 kW high-efficiency industrial motors.

• Air Purity Standard: Certified TÜV Class 0 zero-oil output airflow across all working pressures.

• Inverter Adjustment Flow Range: 20% to 100% adjustable flow rate matching real-time gas usage.

• Working Ambient Threshold: Designed for continuous operation up to 50°C standard plant temperature.

ZR/ZT 75-90 VSD (FF) STD

Performance reference conditions for the unit were measured according to Annex C, 4th edition (2009) of ISO 1217:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C Discharge rate (FAD) was measured at the following operating pressures:

Constant speed type:

·  -7.5 bar type: 7 bar

· -8.6 bar type: 7 bar

· -10 bar type: 9 bar

VSD type:

· -8.6 bar type: 7 bar

· -10.4 bar type: 9 bar

· (2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (using 150 9614/2 sound intensity scanning method). The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

· (3) Weight is for reference only; the actual weight supplied shall prevail.

ZR/ZT 110-160 (FF) STD

ZR/ZT 110-160 VSD (FF) STD

According to ISO 1217 Annex C, 4th Edition (2009), the unit performance reference conditions are as follows:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C

Displacement FAD is measured at the following operating pressures:

Constant speed models:

-7.5 bar models: 7 bar

-8.6 bar models: 7 bar

-10 bar models: 9 bar

VSD models:

-8.6 bar models: 7 bar

-10.4 bar models: 9 bar

(2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (ISO 9614/2 sound intensity scanning method). The newly added correction factor KpAd is uncertain, complying with test code.

(3) V1=380V, V2=400V.

(4) Weight is for reference only; actual weight shall prevail.

ZR/ZT 200-275 (FF)

 ZR/ZT 250-315 VSD (FF)

-Relativehumidity:0%

-Absolute inlet pressure: 1bar

-Inlet temperature:20°℃

Discharge rate (FAD) was measured at the following operating pressures

Constant speed type:

-7.5 bar type: 7 bar

-8.6 bar type: 7 bar

-10 bar type: 9 bar

VSDtype:

-8.6 bar type: 7 bar

-10.4 bar type: 9 bar

(2) Class A weighted emission sound pressure level of the workstation (LpWSAd).

Measured according to ISO 2151:2004(using 150 9614/2(sound intensity scanning method).

The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

(3) Weight is for reference only; the actual weight supplied shall prevail.

ZR 300-750

ZR 355-900VSD

Performance reference conditions for the unit were measured according to Annex C, 4th edition (2009) of ISO 1217:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C Discharge rate (FAD) was measured at the following operating pressures:

Constant speed type:

·  -7.5 bar type: 7 bar

· -8.6 bar type: 7 bar

· -10 bar type: 9 bar

VSD type:

· -8.6 bar type: 7 bar

· -10.4 bar type: 9 bar

· (2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (using 150 9614/2 sound intensity scanning method). The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

· (3) Weight is for reference only; the actual weight supplied shall prevail.

ZR 200X-400X

ZR/ZT 75-160 VSD+ FF

Performance reference conditions for the unit were measured according to Annex C, 4th edition (2009) of ISO 1217:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C Discharge rate (FAD) was measured at the following operating pressures:

Constant speed type:

·  -7.5 bar type: 7 bar

· -8.6 bar type: 7 bar

· -10 bar type: 9 bar

VSD type:

· -8.6 bar type: 7 bar

· -10.4 bar type: 9 bar

· (2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (using 150 9614/2 sound intensity scanning method). The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

· (3) Weight is for reference only; the actual weight supplied shall prevail.

Custom Tooling & Process Flow

1. Dual Permanent Magnet Inverter (IE5): Dual synchronous motors separately adjust high and low-pressure head speeds in real time based on factory demand.

2. Gradual Air Compression & Separation: Features a corrosion-resistant stainless steel tube bundle and robotic-welded, leak-free design. An internal labyrinth-designed water separator removes condensate effectively before distribution.

3. Real-Time Intelligent Monitoring: The integrated Elektronikon® controller monitors the working status of the Oil-free Class 0 Screw Air Compressor and dryers simultaneously, providing proactive maintenance warnings and automated fault shutdowns to stop batch damage.

Mature Z oil-free screw technology, ZR water-cooled models

Custom Tooling & Process Flow

1. Dual Permanent Magnet Inverter (IE5): Dual synchronous motors separately adjust high and low-pressure head speeds in real time based on factory demand.

2. Gradual Air Compression & Separation: Features a corrosion-resistant stainless steel tube bundle and robotic-welded, leak-free design. An internal labyrinth-designed water separator removes condensate effectively before distribution.

3. Real-Time Intelligent Monitoring: The integrated Elektronikon® controller monitors the working status of the compressor and dryers simultaneously, providing proactive maintenance warnings and automated fault shutdowns to stop batch damage.

Global Logistics, Packaging & Service

To secure your factory asset and guarantee an immediate startup, every product order features global logistics monitoring and prompt support:

• Seaworthy Export Packaging: Heavy-duty wooden export framing with interior vacuum moisture-proof film, preventing marine salt-spray rusting and transit impact cracks.

• Rapid Service Response: 10-minute phone support, 1-hour local field deployment in service regions, monthly telephone checks, and quarterly on-site inspection schedules.

• Official Equipment Warranty: 12-month full machine protection for major mechanical assemblies, backed by 100% genuine replacement spare parts.

FAQ

Q: How does the internal jacket design prevent thermal deformation and keep compressed air clean?

A: The Oil-free Class 0 Screw Air Compressor utilizes a dedicated water-cooling jacket wrapped around a unique Z-type seal design. This arrangement physical isolates the gas path from lubrication areas while keeping the second-stage suction temperature stable around 40°C. It stops thermal expansion and ensures zero oil mist enters the output line.

Q: Can this machine adapt to highly fluctuating production demands without wasting air?

A: Yes, our dual permanent magnet variable frequency system allows a broad flow adjustment range from 20% to 100%. Traditional compressors vent unused compressed air into the atmosphere during unloading, wasting over 30% of energy. Our system matches motor speed directly to factory demand, avoiding venting waste entirely.

Q: What specific maintenance intervals are required to keep the compressor running continuously?

A: Because our machine uses oil-lubricated bearings sealed outside the compression chamber, the internal rotors require no contact oil flushing. The embedded controller flags exact component wear points automatically. This completely eliminates traditional line filters, lowering scheduled maintenance downtime by roughly 45% compared to oil-injected models.