Screw Compressor

Discover high-performance rotary screw compressors designed to meet the demands of modern industries. Whether you run a workshop, manufacturing line, or precision facility, our screw compressors deliver a reliable air supply with reduced maintenance and a long service life.

What is a Screw Compressor?

A screw compressor is a type of positive displacement air compressor. It compresses air using two interlocking helical rotors - one male and one female - housed within a sealed chamber. As the rotors turn, air is drawn in, trapped, and compressed along the rotors' length. The result is a steady stream of high-pressure air.

Screw compressors differ from piston compressors in their ability to run continuously without overheating. They operate with fewer parts in motion, resulting in reduced vibration, lower wear, and smoother operation.

Oil-Injected vs Oil-Free Models

• Oil-Injected Screw Compressors: These models use oil to cool, seal, and lubricate the compression chamber. They are ideal for general industrial use where trace oil in the air is acceptable.
• Oil-Free Screw Compressors: These do not use oil during the compression process. They are essential for industries that demand 100% clean air, such as pharmaceuticals, electronics, and food processing.

Benefits of Rotary Screw Compressors

Rotary screw compressors are a popular choice due to their performance and efficiency. They provide numerous advantages for operations that rely on uninterrupted compressed air.

• Continuous Operation: Screw compressors offer a 100% duty cycle. They can run non-stop without losing performance or overheating, making them suitable for continuous production environments. 
• High Efficiency: With tight internal tolerances and fewer moving parts, rotary screw compressors reduce energy waste. Variable speed drive (VSD) models adjust motor speed based on air demand, improving energy savings. 
• Low Noise Output: Thanks to their enclosed design and internal damping, these compressors operate at lower decibels than piston compressors. This makes them suitable for indoor or noise-sensitive environments. 
• Long Service Life: With robust components and reduced friction, screw compressors often exceed 50,000 hours of operational life with proper maintenance. 
• Minimal Vibration: Lower mechanical movement results in less vibration, reducing wear on parts and surrounding equipment. 
• Compact Design: Despite their power, screw compressors take up less space and are easier to install in confined or modular environments.

Why Choose a Rotary Screw Compressor?

Choosing a screw compressor offers long-term benefits for businesses that rely on air-powered tools or systems. Key reasons include:

• Stable Air Pressure: Maintains constant pressure even during peak demand.
• Low Maintenance: Simple design reduces maintenance intervals.
• Lower Lifecycle Cost: High efficiency reduces energy bills over time.
• Cleaner Output: Inline filtration and aftercoolers improve air quality.
• Fewer Breakdowns: Reduced heat and wear result in fewer mechanical issues.

How to Select the Right Screw Compressor

Selecting the correct compressor ensures performance, efficiency, and longevity. Consider these factors before purchase:

Air Flow Requirements

Measure your demand in litres per second (L/s), cubic feet per minute (CFM), or cubic metres per hour (m³/h). Choose a unit that meets or slightly exceeds your total demand.

Operating Pressure

Different tools and systems require different pressures, typically measured in bar or PSI. Confirm the pressure range your operation needs before choosing.

Duty Cycle

If your system needs continuous airflow, a rotary screw compressor is the right choice. For intermittent use, piston models might be more cost-effective.

Space Constraints

Check dimensions and access space for installation, servicing, and ventilation.

Air Quality

Choose oil-free units for clean air environments or where air comes in direct contact with products.

Where Are Screw Compressors Used?

Rotary screw compressors support a wide range of industries. Their durability, efficiency, and airflow capacity make them suitable for demanding applications.

Manufacturing & Production: From assembly lines to CNC machines, manufacturing processes rely on compressed air for tool operation, automation, and product packaging. 

Automotive & Garages: Used in body shops, tyre services, and assembly facilities. Compressors power spray guns, impact wrenches, air ratchets, and lifts. 

Food & Beverage Processing: Oil-free compressors ensure product safety in bottling, packaging, and processing lines. Air purity is vital to avoid contamination. 

Pharmaceuticals & Healthcare: Used in cleanrooms, tablet production, and hospital facilities. Only oil-free compressors are permitted in these regulated environments. 

Electronics & Precision Engineering: Supports pick-and-place machines, semiconductor manufacturing, and electronics cleaning where pure, dry air is critical.

Why Buy from Machinery On Sale?

Trusted Supplier in Singapore: We supply genuine rotary screw compressors backed by expert knowledge and reliable after-sales service. We support small workshops and large factories with equal dedication. 

Competitive Pricing: Our clearance and promotional deals offer unbeatable value. Get high-performance compressors at prices that suit your budget. 

On-Ground Service & Warranty: Our team offers maintenance, repairs, and spare parts directly from Singapore. We also provide installation support and training. 

Wide Product Range: From 3HP to 50HP models, we carry a range to meet any requirement. Custom solutions are available on request. 

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