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Two stage compression Permanent Magnet Inverter Screw Air Compressor 
Product Description
Permanent magnet variable frequency screw air compressor:
1. Constant pressure control: It can realize high-precision constant pressure control with a pressure fluctuation range of 0.01 MPa;
2. Variable frequency soft start: Eliminate the peak current when starting, avoid grid impact, avoid current impact through step-by-step speed adjustment, and improve flexibility
3. Prevent no-load: The compressor is no-load during operation, reducing ineffective energy consumption;
Permanent magnet motors use high-efficiency rare earth magnets, no loss of magnetism at 180°C, and long service life; energy saving is about 6% to 7% compared with ordinary frequency conversion motors;
It can exert the highest efficiency in a wider range and make the air compressor more energy-saving.
Two stage air end
Feature:Two-stage compressor air-end
Advantage:Low compression ratio, Low temperature rising, Low air leakage
Benefit:15% energy-saving
High-efficiency Motor
Feature:IE4 permanent magnet motor/IE4 High-efficiency motor
Advantage:Motor efficiency 97%
Benefit:5% energy-saving
Intelligent control
Feature:VFD system
Advantage:Constant pressure output to remove pressure fluctuation and off-load, Constant temperature output at 9-~85°C, Low starting current to protect components
Benefit:15% energy-saving
Smart display screen
Feature:Intelligent control system
Advantage:10 inch monitor to show all the date
Benefit:Simple operation and touble free
Cooling fan
Feature:Large cooler system
Advantage:Axial flow Fan used for good cooling effect
Benefit:Allow ambient temperature at 52°C
Systematic Design of Oil separator
Feature:Large oil system
Advantage:Reduce internal pressure loss avoid oil, Leakage for safety
Benefit:3% energy-saving
Filter
Feature:Double filtering system
Advantage:Remove impurity from air and cleanness
Benefit:Longer life air -end and lubrication oil
Air inlet valve
Feature:High vacuum degree:700mmHg
Advantage:Large suction area, Low load energy consumption in unloaded operation,
Fast check: prevent unloading and shutdown oil injection
Benefit:Cast aluminum to avoid rust and temperature change
Technical Parameters
| Model | Air Delivery (m3/min) | Power (kW) |
Noise (Db) |
Outlet diameter |
Dimension (mm) | Weight (Kg) |
|||
| 0.7Mpa | 0.8Mpa | 1.0Mpa | 1.3Mpa | L * W * H | |||||
| RK30APMII | 4.3 | 4.1 | 3.5 | 2.7 | 22 | 68 | G11/2 | 1500x1000x1350 | 650 |
| RK40APMII | 6 | 5.9 | 4.7 | 3.9 | 30 | 68 | G11/2 | 1500x1000x1350 | 700 |
| RK50APMII | 7.1 | 6.9 | 5.8 | 5.4 | 37 | 68 | G11/2 | 1500x1000x1350 | 750 |
| RK60APMII | 10 | 9.5 | 7.8 | 6.8 | 45 | 72 | G2 | 2100x1300x1650 | 1250 |
| RK75APMII | 13 | 12.5 | 9.2 | 7.5 | 55 | 76 | G2 | 2100x1300x1650 | 1300 |
| RK100APMII | 15.5 | 15.2 | 12 | 10.2 | 75 | 76 | G2 | 2100x1300x1650 | 1350 |
| RK125APMII | 19.8 | 19.5 | 15 | 14 | 90 | 76 | DN80 | 2500x1650x1900 | 2700 |
| RK150APMII | 24 | 23 | 19.2 | 16 | 110 | 76 | DN80 | 2500x1650x1900 | 2800 |
| RK180APMII | 27.5 | 27 | 23.7 | 19 | 132 | 78 | DN80 | 2500x1650x1900 | 3000 |
| RK220APMII | 33 | 32.5 | 27.5 | 22.5 | 160 | 78 | DN80 | 3000x1900x1950 | 4300 |
| RK250APMII | 39 | 36 | 32 | 27.5 | 185 | 78 | DN80 | 3000x1900x1950 | 4400 |
| RK275APMII | 43.5 | 41 | 35.5 | 31.5 | 200 | 78 | DN100 | 3600x2200x2200 | 5000 |
| RK300APMII | 51.5 | 48.3 | 38.5 | 35.5 | 220 | 82 | DN100 | 3600x2200x2200 | 5500 |
| RK350APMII | 54 | 51 | 45 | 38 | 250 | 82 | DN100 | 3600x2200x2200 | 6000 |
| RK380APMII | 60 | 57 | 50 | 43 | 280 | 82 | DN125 | 4000x2300x2300 | 6800 |
| RK420APMII | 65 | 62 | 56 | 50.5 | 315 | 82 | DN125 | 4000x2300x2300 | 7000 |
| RK480APMII | 75 | 73 | 64 | 55 | 355 | 82 | DN150 | 4200x2200x2350 | 8500 |
| RK540APMII | 84 | 82 | 72 | 61 | 400 | 82 | DN150 | 4200x2200x2350 | 9000 |
Packaging & Shipping
Shanghai Rocky Machinery Co., Ltd. was established in 2003 and has 18 years of experience in the air compressor industry. It is an innovative enterprise integrating production, trade, service, research and development.
We are professional gas compressors manufacturer since 2003, Germany standard, more than 100 workers, annual sales exceeding 20 million US dollars with 13 years of exporting experience, strict quality control and delivery on time. We not only supply gas compressor including screw air compressor, but also supply spares parts and after-treat machines.
Our main products series as follows.
2. Dry Oil-free Screw air compressor
3. Oil-free water lubricated screw air compressor
4. Oil-free scroll air compressor
5. Oil-free/Oil-lubricated piston compressor
6. Mobile Screw air compressor( Motor driven/ Diesel engine driven)
7. Oxygen/Nitrogen generators/boosters
8. High Pressure Breathing Air Compressor
9. Refrigerant air dryer/ Desiccant air dryer
10. Precision line filter/ water separator
Rocky will continue to promote technological innovation and progress in line with the mission of "innovation reflects value", and achieve win-win results with global partners, suppliers and employees. Create a new world of "energy saving, envir-onmental protection and intelligence" in the field of air compressors.
1.24/7 after sales service support in different languages.
2.Follow up the feedback of products in 2 months interval by email or call.
3.Guidance of installation and commissioning on site can be provided by factory-trained technicians or local Authorized Service Center.
4.Technical training for customers in Rocky air compressor factory or working site.
5.All kinds of technical documents in different languages.
FAQ
Q1. Are you trading company or manufacture ?
A: We are professional manufacture of screw air compressor of Taicang,Jiangsu,China. More than 18 years of experience in air compressor manufacturing.
Q2. How long is the delivery time ?
A: For standard voltage ,15 working days. Non-standard ,please contact our sales.
Q3. What's payment term ?
A: T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
Q4. How about your after-sales service ?
A: 1.Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas service.
3.Worldwide agents and after service avaiable.arrange our engineers to help you training and installation.
Q5. How about your warranty?
A: One year for the whole machine and two years for screw air end, except consumable spare parts.
Q6. Do you have any certificate ?
A: Yes, per different customer's market need ,we can offer CE ,ISO etc certificate.
Q7. What about the maintenance ?
A: First maintenance need to be done after 500Hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.
Q8. How do you control quality ?
A: 1. The raw materials are strictly inspected
2. Some key parts are imported from overseas
3. Each compressor must pass at least 5 hours of continuous testing before leaving the factory.
Q9. Do you offer OEM service ?
A: Yes.Both OEM & ODM service can be accepted.
Q10.How long could your air compressor be used?
A: Generally, more than 10 years.
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