Fixed Speed Screw Air Compressors
AIRNOVEX manufactures fixed speed screw air compressors for factories and industrial facilities that need a steady compressed air supply, straightforward operation, and predictable maintenance.
These compressors operate at a constant motor speed and are typically used where air demand remains relatively stable throughout the production shift. Rotary screw compression provides continuous airflow with lower vibration than traditional reciprocating compressors, making it well suited to manufacturing environments and multi-shift production.
AIRNOVEX supplies compressors for end users, distributors, OEM customers, and industrial projects in North America, Europe, and other international markets.
Fixed Speed Screw Air Compressor at a Glance
A practical configuration for industrial plants with consistent air consumption and long operating hours.
Fixed Speed Screw Air Compressors Overview
A fixed speed screw compressor uses an electric motor running at a constant speed to drive a pair of precision-machined screw rotors. Air enters the compression chamber, its volume is progressively reduced between the rotors, and compressed air is then delivered to the plant air system.
Because the motor operates at a fixed speed, this design is especially suitable for production lines where compressed air demand remains fairly constant rather than changing sharply throughout the day.
Typical reasons factories use fixed speed compressors
- Continuous production with predictable air consumption
- Stable pressure requirements during operating shifts
- Lower initial equipment complexity than VSD systems
- Simple operation and familiar maintenance procedures
- Reliable performance in general industrial environments
Key Features of AIRNOVEX Fixed Speed Screw Air Compressors
Component selection and system layout are focused on stable operation, service access, and the demands of everyday industrial use.
Screw Air End
Precision rotor geometry supports stable compression performance and continuous operation under normal industrial duty cycles.
High-Efficiency Motor
Industrial electric motors are selected to provide dependable power transmission and consistent compressor performance.
Stable Air Delivery
Fixed-speed operation is well suited to facilities where production equipment requires a steady compressed air supply.
Intelligent Controller
The control system monitors key operating conditions and provides operators with access to compressor status and protection functions.
Service-Friendly Layout
Internal components are arranged to make routine inspection, filter replacement, and scheduled maintenance easier to carry out.
Industrial Enclosure
A compact enclosed structure helps reduce installation footprint and provides a cleaner equipment layout inside compressor rooms.
Fixed Speed Screw Air Compressor Specifications
The values below represent common industrial configurations rather than final model commitments. AIRNOVEX can configure compressors according to required airflow, system pressure, electrical standard, and installation conditions.
| Model | Motor Power | Working Pressure | Typical Air Flow | Cooling | Typical Application |
|---|---|---|---|---|---|
| AIRNOVEX AN-30 | 30 kW | 8–10 bar | Approx. 5–6 m³/min | Air Cooled | Small and medium production facilities |
| AIRNOVEX AN-37 | 37 kW | 8–10 bar | Approx. 6–7 m³/min | Air Cooled | General manufacturing |
| AIRNOVEX AN-45 | 45 kW | 8–10 bar | Approx. 7–9 m³/min | Air Cooled | Processing and machining operations |
| AIRNOVEX AN-55 | 55 kW | 8–10 bar | Approx. 9–11 m³/min | Air / Water Cooled Options | Medium industrial plants |
| AIRNOVEX AN-75 | 75 kW | 8–10 bar | Approx. 13–15 m³/min | Air / Water Cooled Options | Larger production facilities |
Industrial Applications
Fixed speed screw air compressors are commonly used where pneumatic equipment operates for long periods and overall air consumption remains relatively predictable.
AIRNOVEX Industrial Screw Air Compressor Manufacturing
AIRNOVEX supplies industrial compressed air equipment for end users, equipment distributors, project contractors, and OEM customers. Product configurations can be adapted to different electrical standards, pressure requirements, operating environments, and commercial programs.
- Fixed speed and variable speed screw compressor ranges
- OEM and private-label cooperation
- Voltage and frequency configurations for different markets
- Technical documentation for international projects
- Spare parts and after-sales support
Manufacturing and Quality Control
Compressor reliability depends on component consistency, correct assembly, and operating checks before shipment. AIRNOVEX uses defined production and inspection steps during compressor assembly.
Key components are checked before entering the assembly process.
Air end, motor, cooling system, electrical components, and piping are assembled according to the selected configuration.
Basic operating parameters and system functions are checked before the compressor is prepared for delivery.
Units are prepared with appropriate packaging and documentation for the destination market.
How to Select the Right Fixed Speed Screw Air Compressor
Compressor selection should be based on actual plant demand rather than motor power alone. Correct sizing helps maintain system pressure while avoiding unnecessary capacity and operating cost.
Add the air consumption of connected machines and tools, then account for simultaneous operation and reasonable reserve capacity.
Select pressure based on the highest actual requirement at the point of use, including expected pressure losses through dryers, filters, piping, and fittings.
Plants running long shifts or continuous production should consider compressor duty cycle, ventilation, maintenance access, and backup capacity.
Fixed speed compressors are generally a practical fit when air demand remains stable. Strongly fluctuating demand may justify evaluating a VSD compressor.
Confirm supply voltage, phase, and frequency before ordering, especially for international projects.
Consider planned production equipment and expected air consumption growth when sizing the overall compressed air system.
Fixed Speed vs. Variable Speed Screw Air Compressors
Neither design is automatically the right choice for every facility. The better configuration depends primarily on the shape of the plant's air demand.
| Factor | Fixed Speed Screw Compressor | Variable Speed Screw Compressor |
|---|---|---|
| Motor Operation | Runs at a constant operating speed | Motor speed changes with system demand |
| Best Air Demand Pattern | Stable and predictable demand | Frequently changing demand |
| Initial Equipment Cost | Typically simpler and lower | Typically higher due to drive technology |
| Part-Load Operation | Less flexible when demand changes substantially | Designed to respond to varying air consumption |
| Typical Installation | Continuous production and steady plant loads | Facilities with significant load variation |
Installation and Maintenance
Correct installation conditions have a direct effect on compressor operating temperature, service access, and long-term reliability.
- Provide sufficient ventilation and cooling airflow around the compressor.
- Install the unit on a stable, level surface with adequate service clearance.
- Keep the air intake area clean and away from excessive dust or heat sources.
- Use appropriately sized piping to limit unnecessary pressure loss.
- Follow applicable electrical and safety requirements for the installation location.
Routine service typically includes
- Checking lubricant level and condition
- Inspecting and replacing air filters
- Servicing the oil filter and separator element
- Cleaning coolers and ventilation surfaces
- Checking belts, couplings, connections, and electrical components where applicable
- Reviewing operating temperature, pressure, and service alarms
Frequently Asked Questions About Fixed Speed Screw Air Compressors
What is a fixed speed screw air compressor?
A fixed speed screw air compressor uses a constant-speed electric motor to drive a rotary screw air end. It is commonly used where compressed air demand remains relatively steady during production.
When should I choose a fixed speed compressor instead of a VSD compressor?
A fixed speed compressor is usually worth considering when air consumption is stable for long periods. A VSD compressor is generally more suitable when demand changes substantially throughout the operating shift.
What size screw compressor does my factory need?
Sizing depends on total airflow demand, required pressure, operating hours, simultaneous equipment use, pressure losses, and planned future capacity. AIRNOVEX can review these values before recommending a configuration.
What is the difference between an 8 bar and a 10 bar screw compressor?
The difference is the discharge pressure the compressor is configured to provide. Higher pressure generally affects available airflow and power consumption, so the system should be selected around the actual pressure required by the equipment.
Can a rotary screw compressor run continuously?
Rotary screw compressors are commonly used for long-duty industrial operation. Appropriate sizing, cooling, ventilation, maintenance, and installation conditions are important for reliable continuous service.
What maintenance does an oil-injected screw compressor require?
Routine service normally includes lubricant checks, air filter replacement, oil filter and separator servicing, cooler cleaning, and inspection of mechanical and electrical components.
Does AIRNOVEX provide OEM screw air compressors?
Yes. AIRNOVEX supports OEM and customized compressor projects, including selected electrical specifications, branding requirements, documentation, and other project-specific configurations.
Can AIRNOVEX supply compressors for the U.S. and European markets?
AIRNOVEX works with international customers and can discuss electrical configuration, documentation, packaging, and other requirements according to the destination market and project.
What information should I send when requesting a quotation?
Provide the required airflow, working pressure, voltage, frequency, daily operating hours, application, installation environment, and destination country. If airflow is unknown, equipment air consumption data can also be used for preliminary sizing.
Discuss Your Compressed Air Requirements With AIRNOVEX
Send us your required pressure, airflow, electrical supply, application, and operating schedule. AIRNOVEX can help identify a suitable fixed speed screw compressor configuration for your project.
