55-900kw Oil-Free Screw Air Compressor

Partnering with premier China 55-900kw Oil-Free Screw Air Compressor suppliers like DECHUAN gives you access to robust, factory-tested aerodynamic engineering. The machine features premium rotor coatings and isolated cooling jackets that prevent thermal distortion under high compression ratios, ensuring a stable, non-contaminated air supply for continuous industrial lines.

Core Operational Advantages & Design Efficiency

Oil contamination in an air system causes catastrophic product defects, clogged instrumentation valves, and unscheduled line stoppages. This industrial-grade air compressor provides complete protection through mechanical isolation:

• Z-Type Carbon Ring Seals: The compression chamber is separated from the lubricated gear housings by multiple non-contact carbon ring seals. Air pressure barriers ensure zero oil molecules migrate past the seals.

• Premium Wear-Resistant Rotor Coating: Our proprietary rotor coating maintains precise clearances and high compression efficiency over thousands of operating hours without peeling or wearing down.

• Zero External Air Loading Valve: The inlet and vent valves are mechanically interlocked. This setup requires no external instrument air to actuate, reducing mechanical failure points.

How Does Air Contamination Cost Your Business?

In sensitive sectors like chemical processing and steel manufacturing, even a minute fraction of airborne oil oil-mist can ruin entire batches of chemical reactants or foul precise pneumatic control valves. This leads to unscheduled downtime and expensive pipeline decontamination procedures.

Choosing the right 55-900kw Oil-Free Screw Air Compressor eliminates these risks completely:

• TÜV Tested Zero-Oil Flow: Rigorously inspected by independent labs across variable thermal ranges, proving zero trace oil components in the discharge airflow.

• Premium Rotor Surface Treatment: The high-grade wear-resistant coating maintains optimal tolerances over decades, preventing internal air slippage.

• Corrosion-Proof Internals: Stainless steel cooling tube bundles prevent moisture corrosion from contaminating your downstream process line.

Core Technical Specifications

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

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)

-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

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

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 Trade Solutions & Process Optimization

• Site Assessment & Flow Sizing: Our engineering team analyzes your plant's peak and baseline air consumption to select the exact kW configuration.

• Integrated Controller Tuning: The Elektronikon® controller is programmed at our facility to interface with your factory's existing central control bus using standard industrial protocols.

• Comprehensive Skid Customization: For limited spaces, we can configure integrated internal configurations including pre-assembled water separators and drainage systems.

How DECHUAN Optimizes Your Supply Chain

DECHUAN serves as a comprehensive supply chain manager and import/export agent based in Shanghai. For every international 55-900kw Oil-Free Screw Air Compressor order, we organize customized trade solutions including customs clearance, rigorous pre-shipment inspection, and sea freight logistics. We offer a 10-minute technical phone response and a comprehensive spare parts supply chain to minimize your global procurement overhead.

FAQ

Q: How does the premium rotor coating maintain its compression efficiency over years of continuous use?

A: Unlike cheap Teflon coatings that bubble and peel under thermal stress, our advanced rotor coating uses an automated thermal molecular bonding process. It resists extreme temperatures and pressure drops, maintaining tight tolerances between the interlocking screw profiles to prevent internal compressed air blow-by.

Q: What makes the mechanical add/unload valve superior to pneumatic solenoid valves?

A: Pneumatic solenoids frequently fail or stick when line moisture increases, causing the compressor to short-cycle or fail to load. Our mechanically interlocked intake and vent valves rely on direct kinetic links driven by the main pressure changes, ensuring 100% reliable loading with incredibly low unloading energy draw.

Q: Does this 55-900kw Oil-Free Screw Air Compressor require specialized oil filters in the downstream piping?

A: No, downstream oil-removal filters are completely unnecessary because the air never comes into contact with oil within the compression chamber. This saves your procurement team thousands of dollars annually in replacement element costs and prevents downstream inline pressure drops.