| Quantity: | |
|---|---|
Dry-type, oil-free screw air compressors utilize a technology that compresses air using two precisely matched, non-contacting male and female rotors (screws). During the compression process, no lubricant is required within the compression chamber, ensuring that the compressed air produced is 100% oil-free.
Compressors in the 250-315kW range are medium-to-high power, typically used in central air supply systems, meeting the centralized air needs of medium- to large-scale factories. This power range corresponds to an exhaust volume of approximately 40-60 m³/min (cubic cubic minutes), making them core power equipment in the industrial sector.
Advantages and Features
1. 100% Oil-Free Air:
◦ High Air Quality: Produces compressed air that meets ISO 8573-1 Class 0 (oil-free) standards, completely eliminating the risk of oil contamination affecting product quality, production processes, and equipment.
◦ Reduced Back-End Costs: Eliminates the need to install and replace expensive oil removal filters, reducing ongoing maintenance costs and energy loss (filters generate pressure drop).
2. Ultra-High Reliability and Long Life:
◦ Ruggedness: Models ranging from 250 to 315 kW are designed for heavy-duty continuous operation. The core screw rotors are typically made of high-strength stainless steel or specially coated for wear and corrosion resistance, with a design life of over 25 years.
◦ Precision Technology: Extremely small clearances between the rotors and between the rotors and the housing, and a precision gearbox maintains synchronous transmission, ensuring long-term, efficient operation without wear.
3. Excellent Energy Efficiency (under specific operating conditions):
◦ Although its absolute power consumption is high, its dry, oil-free design avoids the efficiency degradation caused by oil contamination. In applications requiring a continuous, stable, high-flow, oil-free gas source, its total lifecycle energy consumption and costs are often lower than those of a "diesel engine + multi-stage oil removal and filtration" solution.
◦ Machines in this power range are often equipped with intelligent control systems that automatically adjust the load based on actual gas usage, avoiding wasted idle time and further saving energy.
4. Low Maintenance Cost
◦ No oil filter, oil-air separator element, or compressor oil need to be replaced. Routine maintenance primarily involves regular replacement of the air filter, oil filter (for gearbox lubrication), and coolant, simplifying maintenance and reducing overall maintenance costs.
◦ Downtime caused by oil deterioration, carbon deposits, and other issues is avoided.
5. Environmentally Friendly
No oil discharge occurs, and treated condensate can be directly discharged, eliminating the need for additional oil-water separation equipment, making it more environmentally friendly.
Technical Parameters
| Model | Air Delivery (m3/min) | Power (kW) | Noise dB(A) | Outlet diameter | Dimension (mm) | Weight (Kg) | ||||
| 7bar | 8bar | 10bar | Air-cooled | Water-cooled | Air-cooled | Water-cooled | ||||
| RDO-250A/W | 27.3-46.0 | 25.3-42.8 | 22.7-38.2 | 250 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5700 | 5200 |
| RDO-280A/W | 31.6-48.6 | 30.9-47.5 | 29.3-45.0 | 280 | 76±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5800 | 5300 |
| RDO-315A/W | 34.1-52.5 | 32.9-50.6 | 31.5-48.5 | 315 | 77±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 6000 | 5400 |
Application Industries
Dry oil-free screw compressors in this power class are the preferred choice for the following industries with stringent air purity requirements:
• Food and Beverage Industry: Used in applications such as bottle blowing, filling, packaging, mixing, and fermentation, where direct contact with the product is essential. Oil contamination prevents product deterioration or non-compliance with safety standards.
• Pharmaceutical and Biotechnology Industry: Used in drug production (raw material handling, process fermentation), packaging, and laboratory equipment, where GMP (Good Manufacturing Practice) oil-free requirements must be met.
• Electronics and Semiconductor Industry: Used in chip manufacturing, PCB cleaning, and photovoltaic panel production, where even trace amounts of oil can lead to a sharp drop in product yield.
• Chemical and Petrochemical Industry: Used in instrument air, process air, and material handling, where oil must not react with process media or contaminate products.
• Medical and Healthcare Industry: Providing central air supply to hospitals (operating rooms, ICUs, and dental equipment), directly impacting patient safety.
• Other Critical Industries: Applications include automotive painting, precision instruments, and aerospace.
Dry-type, oil-free screw air compressors utilize a technology that compresses air using two precisely matched, non-contacting male and female rotors (screws). During the compression process, no lubricant is required within the compression chamber, ensuring that the compressed air produced is 100% oil-free.
Compressors in the 250-315kW range are medium-to-high power, typically used in central air supply systems, meeting the centralized air needs of medium- to large-scale factories. This power range corresponds to an exhaust volume of approximately 40-60 m³/min (cubic cubic minutes), making them core power equipment in the industrial sector.
Advantages and Features
1. 100% Oil-Free Air:
◦ High Air Quality: Produces compressed air that meets ISO 8573-1 Class 0 (oil-free) standards, completely eliminating the risk of oil contamination affecting product quality, production processes, and equipment.
◦ Reduced Back-End Costs: Eliminates the need to install and replace expensive oil removal filters, reducing ongoing maintenance costs and energy loss (filters generate pressure drop).
2. Ultra-High Reliability and Long Life:
◦ Ruggedness: Models ranging from 250 to 315 kW are designed for heavy-duty continuous operation. The core screw rotors are typically made of high-strength stainless steel or specially coated for wear and corrosion resistance, with a design life of over 25 years.
◦ Precision Technology: Extremely small clearances between the rotors and between the rotors and the housing, and a precision gearbox maintains synchronous transmission, ensuring long-term, efficient operation without wear.
3. Excellent Energy Efficiency (under specific operating conditions):
◦ Although its absolute power consumption is high, its dry, oil-free design avoids the efficiency degradation caused by oil contamination. In applications requiring a continuous, stable, high-flow, oil-free gas source, its total lifecycle energy consumption and costs are often lower than those of a "diesel engine + multi-stage oil removal and filtration" solution.
◦ Machines in this power range are often equipped with intelligent control systems that automatically adjust the load based on actual gas usage, avoiding wasted idle time and further saving energy.
4. Low Maintenance Cost
◦ No oil filter, oil-air separator element, or compressor oil need to be replaced. Routine maintenance primarily involves regular replacement of the air filter, oil filter (for gearbox lubrication), and coolant, simplifying maintenance and reducing overall maintenance costs.
◦ Downtime caused by oil deterioration, carbon deposits, and other issues is avoided.
5. Environmentally Friendly
No oil discharge occurs, and treated condensate can be directly discharged, eliminating the need for additional oil-water separation equipment, making it more environmentally friendly.
Technical Parameters
| Model | Air Delivery (m3/min) | Power (kW) | Noise dB(A) | Outlet diameter | Dimension (mm) | Weight (Kg) | ||||
| 7bar | 8bar | 10bar | Air-cooled | Water-cooled | Air-cooled | Water-cooled | ||||
| RDO-250A/W | 27.3-46.0 | 25.3-42.8 | 22.7-38.2 | 250 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5700 | 5200 |
| RDO-280A/W | 31.6-48.6 | 30.9-47.5 | 29.3-45.0 | 280 | 76±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5800 | 5300 |
| RDO-315A/W | 34.1-52.5 | 32.9-50.6 | 31.5-48.5 | 315 | 77±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 6000 | 5400 |
Application Industries
Dry oil-free screw compressors in this power class are the preferred choice for the following industries with stringent air purity requirements:
• Food and Beverage Industry: Used in applications such as bottle blowing, filling, packaging, mixing, and fermentation, where direct contact with the product is essential. Oil contamination prevents product deterioration or non-compliance with safety standards.
• Pharmaceutical and Biotechnology Industry: Used in drug production (raw material handling, process fermentation), packaging, and laboratory equipment, where GMP (Good Manufacturing Practice) oil-free requirements must be met.
• Electronics and Semiconductor Industry: Used in chip manufacturing, PCB cleaning, and photovoltaic panel production, where even trace amounts of oil can lead to a sharp drop in product yield.
• Chemical and Petrochemical Industry: Used in instrument air, process air, and material handling, where oil must not react with process media or contaminate products.
• Medical and Healthcare Industry: Providing central air supply to hospitals (operating rooms, ICUs, and dental equipment), directly impacting patient safety.
• Other Critical Industries: Applications include automotive painting, precision instruments, and aerospace.
