Conversion 22KW Rotary Screw Air Compressor 30hp Stationary Air Compressor
How much energy PM can save?
Permanent magnet frequency compressor can save 25% 44% energy base on air capacity.
How to do it?
1.Remove full load to unload
2.DHH PM motor can save 6%-7% energy compare with other brand motor
3.DHH PM motor and compressor was designed with the one shaft
4. Avoid unload function
5.Protect pressure of pipe network< 0.01MPa
6.Reduce average working pressure
7.Reduce leakage from compressor system
8.Soft boot add balance for electric current,to avoid shock
9.PM compressor working pressure is from 4bar to 13bar,it can reduce the loss to the greatest extent.
Motor Main Features:
1.PM motor and compressor was designed with the one shaft, 100% transmission efficiency.
2 No motor bearing.,no trouble for maintenance.
3. Especially in the low-speed ,PM motor can still maintain a high
motor efficiency.
4.PM motor size is smal,and it's only about one third of an ordinary WWVF motor,which is easy to uninsal.
5.With the high-performance permanent magnet material,PM motor
don't lose magnetic even with the temperature of 120C. Its life will be more than 15 years.
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 | Length | Width | Height | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-10A | 1.3 | 1.2 | 1 | / | 7.5 | 63 | G3/4 | 895 | 590 | 970 | 190 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-20A | 2.4 | 2.3 | 2 | 1.7 | 15 | 65 | G3/4 | 1062 | 690 | 1000 | 236 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-30A | 4.15 | 3.7 | 3.2 | 2.8 | 22 | 68 | G1 | 1330 | 830 | 1265 | 410 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-40A | 5.7 | 5.2 | / | / | 30 | 68 | G1 | 1330 | 830 | 1265 | 520 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-50A | 6.9 | 6.5 | 5.6 | 4.9 | 37 | 69 | G1 1/2 | 1500 | 940 | 1415 | 655 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-60A | 8.1 | 7.5 | 6.75 | 5.9 | 45 | 70 | G1 1/2 | 1500 | 940 | 1415 | 730 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-75A | 10.3 | 9.5 | 8.3 | 7.8 | 55 | 70 | G2 | 1600 | 1060 | 1470 | 950 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-100A | 13 | 12.8 | 11 | 9.5 | 75 | 72 | G2 | 2000 | 1120 | 1590 | 1070 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-125A | 16.7 | 15.5 | 14.0 | 12.5 | 90 | 72 | G2 | 2000 | 1120 | 1590 | 1221 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-150A | 20.8 | 19.6 | 17.8 | 15.5 | 110 | 72 | DN65 | 2400 | 1630 | 1980 | 1950 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-175A | 24.1 | 23.2 | 19.5 | 17 | 132 | 72 | DN65 | 2400 | 1630 | 1980 | 2150 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-220A | 28.8 | 27.8 | 23.0 | 20 | 160 | 72 | DN80 | 2800 | 1828 | 2150 | 3620 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DM-250A | 33.2 | 31.2 | 27.5 | 25.8 | 185 | 72 | DN80 | 2800 | 1828 | 2150 | 3920 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||

Rotors are asymmetric in profile, backed up by ball bearings and roller bearings. Operates at a low speed, thereby low in abrasion and maintenance expenses, air end is long service life. Helical gears can produce axial force to kill some acting force, which reduces the load of the bearing of air end.
2.Control panel
Intelligent microcomputer-based control technology can monitor and control in all aspects the complete machine following your instructions, remote control realizes unattended operation, and the user-friendly human-machine interface displays instructions and parameters in written form also, it can function to self diagnose faults, give warning and automatically regulate the capacity.
3.Oil filter
Rotary filters are applied to completely remove the impurities in the lubricating oil, easy to replace and free of oil impregnate.
4.Air filter
Original imported filter material,high efficiency three levels air separator, keep internal cleanliness of the system effectively.
5.Cooler
The cooler is located separately from the internal isolation of the chassis,so that the cooling fans would suck air with normal temperature from outside.Compared to cooling by using the air of 45~65°Cinside the chassis,the cooling fans could save over 30% energy when the temperature of the air outlet decreases 3~8°C.
6.Excellent quality of motors
Professional customized high efficiency permanent magnet motor,Compared to normal motors, Permanent magnet motor more excellent energy saving.protection grade:IP65.



1.Why customer choose us?
DHH COMPRESSOR JIANGSU CO.,LTD.with 23 years old history,we are specialized in Rotary Screw Air Compressor.Germany Standard and 13 years exporting experience help us won more than 30 loyal foreign agents.We warmly welcome your small trial order for quality or market test.
2.Are you a manufacturer or trading company?
We are professional manufacturer with big modern factory in Qidong,China,with professional design team.Both OEM & ODM service can be accepted.
3.Where is your factory located? How can I visit there?
Our factory is located in Qidong City, Jiangsu Province, China. We can pick up you from Shanghai, it’s about 1 hour from Shanghai Pudong Airport to our factory. Warmly welcome to visit us!
4.What’s your delivery time?
380V 50HZ we can delivery the goods within 14 days. Other electricity or other color we will delivery within 22 days,if urgently order,pls contact our sales in advance.
5.How long is your air compressor warranty?
One year for the whole machine and two years for screw air end, except consumable spare parts and we can provide some spare parts of the machines.
6.How does your factory do regarding quality control?
Quality is everything. we always attach great importance to quality controlling from the very beginning to the very end. Our factory has gained ISO9001:2015 authentication and CE certificate.
7.How long could your air compressor be used?
Generally, more than 10 years.
8. What's payment term?
T/T,L/C,D/P,Western Union,Paypal,Credit Card,and etc.Also we could accept USD, RMB, Euro and other currency.
9.How about your customer service?
24 hours on-line service available.48 hours problem solved promise.
10.How about your after-sales service?
(1) Provide customers with installation and commissioning online instructions.
(2) Well-trained engineers available to overseas service.
(3) Worldwide agents and after service available.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.



