Screw Compressors
Industrial-grade rotary screw air compressors by AP Compressors (Aerolith Pneumatics). Energy-efficient, reliable performance with nationwide service support across Nepal including Kathmandu, Pokhara, Birgunj, Biratnagar and all major cities.
Oil-injected rotary screw technology with low specific power consumption for continuous industrial duty
Site assessment, installation, piping design, commissioning, and AMC across all major cities in Nepal
Designed for 60,000–80,000+ hour service life with proper maintenance – built for round-the-clock factory use
| Technology | Oil-injected rotary screw |
| Capacity range | 7 CFM – 500+ CFM |
| Working pressure | 7 bar – 13 bar |
| Power range | 5 HP – 200+ HP |
| Duty cycle | 100% continuous |
| Noise level | 65–75 dB(A) |
| Drive type | Belt drive / direct drive |
| Service interval | 2,000 – 4,000 hours |
| Expected life | 60,000 – 80,000 hours |
1. Calculate your CFM requirement
Add the CFM ratings of all tools and machines running simultaneously, then add 20–25% safety margin. This is your minimum compressor output.
2. Determine working pressure
Most industrial applications need 7–10 bar. Check the highest-pressure tool in your system and size accordingly – do not oversize pressure unnecessarily.
3. Assess duty cycle
Screw compressors are ideal for 100% continuous duty. If your demand is intermittent, a piston compressor may cost less. If demand varies widely, consider a PM VFD model.
4. Plan for air treatment
Most applications need a refrigerated dryer and coalescing filter downstream. Food, pharma, and finishing require higher-grade treatment – factor this into the system cost.
5. Include installation and AMC
Piping design, receiver sizing, commissioning, and a maintenance contract are part of a complete system. AP Compressors includes this support across all cities in Nepal.
| Criteria | Rotary Screw | Piston |
|---|---|---|
| Duty cycle | 100% continuous | 50–70% intermittent |
| Best for | Factories, production lines | Workshops, light use |
| Noise level | 65–75 dB(A) – quieter | 75–85 dB(A) – louder |
| Air delivery | Smooth, continuous flow | Pulsed delivery |
| Maintenance | Every 2,000–4,000 hours | Every 500–1,000 hours |
| Equipment life | 60,000–80,000 hours | 15,000–30,000 hours |
| Energy efficiency | Higher at continuous load | Lower – more heat loss |
| Initial cost | Higher | Lower |
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Support & Answers
Find answers about our air compressors, air dryers, filters, customized compressed air solutions, installation, and maintenance services.
Reach out to our teamRotary screw compressors provide continuous air supply, operate quieter, have fewer moving parts, require less maintenance, and are more suitable for industrial continuous duty applications compared to piston compressors.
Screw compressor sizing depends on your CFM (air flow) requirement, operating pressure, duty cycle, and future expansion plans. Our experts can assess your compressed air demand and recommend the right capacity compressor.
Yes, we provide complete installation, piping design, commissioning, and startup support for all screw compressors. Our technicians ensure proper setup for optimal performance and efficiency.
Regular maintenance includes oil changes, air filter replacement, oil separator replacement, and periodic inspections. We offer comprehensive AMC (Annual Maintenance Contract) services to keep your compressor running efficiently.
Yes, we maintain inventory of genuine spare parts including air filters, oil filters, oil separators, lubricants, and other consumables. We ensure quick availability to minimize downtime.
Absolutely. Screw compressors work perfectly with air treatment equipment like refrigerated dryers, desiccant dryers, and filtration systems to provide clean, dry compressed air for sensitive applications.
