What is a rotary screw air compressor?

A rotary screw air compressor uses two meshing helical screws to compress air. They are known for continuous duty operation, energy efficiency, and a steady supply of compressed air.

Why is a refrigerant compressed air dryer important?

A refrigerant dryer cools compressed air to remove moisture, preventing condensation in pipes and equipment. This protects pneumatic tools, machinery, and final products from water damage and corrosion.

What does '7 Bar Pressure' mean?

7 Bar (approximately 100 psi) refers to the maximum working pressure the compressor is designed to deliver. This is a common pressure for many industrial and workshop applications.

Can the included piping be reused?

The included factory piping may be reusable, but its suitability depends on its condition, material, and the buyer's specific layout requirements. It is advisable to inspect it thoroughly or consult with a qualified installer.

What maintenance is typically required for a rotary screw compressor?

Regular maintenance typically includes oil changes, filter replacements (air, oil, and separator), and checking drive belts. The frequency depends on operating hours and environmental conditions.

Is this unit suitable for continuous operation?

Rotary screw compressors are generally designed for continuous, heavy-duty operation, making them well-suited for industrial environments requiring a constant air supply.

Machine d'occasion

Vendu récemment

Vendeur vérifié

Tundra

Name: Tundra
Brand: Tundra
SKU: d1a69640d53a
Availability: SoldOut

Prix : Prix sur demande auprès du vendeur

Used Rotary Screw Air Compressor

Essex, United Kingdom

À 5 756 km

Numéro de modèle

tundra

Numéro de stock

d1a69640d53a

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Providing compressed air for general workshop tools and pneumatic machinery.
Powering industrial processes such as packaging, assembly lines, and material handling.
Supplying air for spray painting booths and surface finishing applications.
Operating control systems and instrumentation in manufacturing plants.

Typical pressure range: Rotary screw compressors commonly operate between 7 to 10 bar (100-145 psi).
Typical flow rate (FAD): For this class of equipment, free air delivery (FAD) typically ranges from 10 to 100 CFM (cubic feet per minute), or 0.3 to 2.8 m³/min, depending on motor size.
Power supply: Units of this type commonly require a 3-phase electrical supply, typically 400V or 415V, 50Hz.
Cooling method: Most rotary screw compressors are air-cooled, though larger units may feature water cooling.
Footprint: The footprint for a standalone unit typically ranges from 1m x 0.8m to 2m x 1.2m, excluding external air receivers or dryers.
Noise level: Modern enclosed rotary screw compressors typically operate at noise levels between 65-75 dB(A).
Air quality: When paired with a refrigerant dryer, as mentioned, the output air quality is suitable for most general industrial applications, reducing moisture content significantly.

A rotary screw air compressor uses two meshing helical screws to compress air. They are known for continuous duty operation, energy efficiency, and a steady supply of compressed air.

Used air compressors for lab and pharma applications are generally valued for reliability and cost savings. Buyers typically prioritize checking maintenance history, confirming pressure ratings meet specific requirements, and verifying oil-free operation where contamination control matters. Key strengths include durability when properly serviced, consistent performance across extended operational hours, and significant capital cost reduction compared to new units. Inspecting seals, checking for corrosion, and confirming recent servicing records are standard considerations when purchasing secondhand.

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