China Hot selling 2021 Hot Sale Industrial Heavy Duty 55cfm to 1600 Cfm Mining Drilling Portable Mobile Movable Diesel Engine Screw Type Rotary Mine Air Compressor air compressor for sale

Product Description

Model MDS390S-8
Compressor brand  
Air
delivery
m3/min 11 
cu.ft/min 390.0 
Discharge pressure bar 8
psig 116
Lubricating Oil capacity L 98
Diesel
Engine
Manufacture&Model 4BTA3.9-C125
Cylinder Number 4
Displacement(L) 3.9
Rotation speed(Rmp) Operating 2100
Idle speed(r/min) 1500
Rated power(KW) 93
Lubricating Oil capacity(L) 9
Coolant Capacity(L) 20
Battery 6-QW-80

Feature&Benefit
Feature   Benefit
Pressure selection and control Easy pressure setting
Flow selection and control The working pressure and airflow rate can be adjusted according to the size of air consumption without wasting any diesel
The twin-screw rotor is directly connected with the diesel engine by a highly flexible coupling Outputting more air with less energy consumption, featuring high reliability, longer service life, and low maintenance cost.
The two-stage air filtration system The total efficiency of air filtration reaches 99.8% ensuring the compressor to not be infringed by dust and dirt particles and longer service life of the engine
High-temperature resistance design Able to run for a long time under extreme cold or hot temperature from -20ºC to 50ºC
One-button start, clear operational parameters Operators don’t have to go through long-term professional training, and unattended operations can be achieved.

Application areas
 

Field Application Nominal Working Pressure(bar) Free Air Delivery Range(m3/min)
General Construction
(building sites, road maintenance, bridges, tunnels, concrete pumping and shotcreting)
Hand-held pneumatic breakers 7~14 5~13
Jack hammers
Air guns
Shotcrete equipment
Pneumatic wrenches
Nut runners
Ground Engineering Drilling 
(basement and foundation excavation for apartment blocks and other buildings)
Pneumatic rock drills 7~17 12~28
Block cutters
Dewatering pumps.
Hand-held pneumatic breakers
Utility, CHINAMFG Blasting
(shipyards, steel construction and large renovation jobs)
Sandblasting
(remove rust, scale, paint)
7~10 10~22
Blast Hole Drilling
(aggregate production for construction stabilization, cement production in limestone quarries and open pit mining)
Rock drills 14~21 12~29
Dewatering pumps
Hand-held breakers
High Pressure Drilling
(drilling for water wells and foundations for high-rise buildings, along with geotechnical/geothermal applications)
Water well drilling 20~35 18~40

 

Selection table

Small Series
Small Series FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS55S-7 1.55 55  7 101.5  D902 2925 1650 1200 1200 600
MDS80S-7 2.24 80  7 101.5 D1005 2925 1650 1200 1200 630
MDS100S-7 2.8 100  7 101.5 V1505 2925 1650 1200 1200 640
MDS125S-7 3.5 125  7 101.5 V1505 3065 1800 1500 1350 810
MDS130S-8 3.7 132  8 116 JE493 3065 1800 1500 1350 810
MDS185S-7 5.18 185  7 101.5 JE493 3200 1900 1740 1660 950
MDS185S-10 5.18 185  10 145 JE493 3050 1900 1740 1660 950
 

Middle Series  (Low&Medium pressure)
Middle Series  (Low&Medium pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS265S-7 7.42 265  7 101.5 JE493 3629 2200 1700 1470 1200
MDS300S-14 8.4 300  14 203 4BTA3.9 3850 2600 1810 2378 1800
MDS350S-10 9.9 354  10 145 4BT3.9 3850 2600 1810 2378 1800
MDS390S-7 11 393  7 101.5 4BTA3.9 3850 2600 1810 2378 1800
MDS390S-13 11 393  13 188.5 QSB4.5 3850 3100 1810 2378 1980
MDS429S-7 12 429  7 101.5 4BTA3.9 3850 2600 1810 2378 1800
MDS429S-14 12 429  14 203 QSB4.5 3850 3100 1810 2378 1980
MDS500S-14 14.1 504  14 203 6BTAA5.9 4550 3600 1810 2378 3100
MDS690S-14 19.3 689  14 203 QSB6.7 4950 3300 2170 2620 3500
MDS720S-10 20.2 721  10 145 QSB6.7 4950 3300 2170 2620 3500
MDS750S-12 21 750  12 174 QSB6.7 4950 3300 2170 2620 3500
MDS786S-10.3 22 786  10.3 149.35 QSB6.7 4950 3300 2170 2620 3500
MDS820S-14 23 821  14 203 6LTAA8.9 5300 4200 2170 2630 5200
MDS850S-8.6 24 857  8.6 124.7 6CTAA8.3 5300 4200 2170 2630 4600
MDS900S-7.1 25.3 904  7.1 102.95 6CTA8.3 5300 4200 2170 2630 4600
 

Middle Series (Medium&High pressure)
Middle Series (Medium&High pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS460S-17 13 464  17 246.5 6BTAA5.9 4600 3500 1800 2230 3500
MDS620S-17 17.4 621  17 246.5 6LTAA8.9 5300 4200 2170 2630 5200
MDS650S-19 18.2 650  19 275.5 QSL8.9 5300 4200 2170 2630 5200
MDS690S-20.4 19.4 693  20.4 295.8 6LTAA8.9 5300 4200 2170 2630 5200
MDS770S-21 21.6 771  21 304.5 6LTAA8.9 5300 4200 2100 2630 5280
MDS830S-18 23.2 830  18 261 6LTAA8.9 5300 4200 2100 2630 5280
MDS820S-25 23 821  25 362.5 QSM11 5300 4200 2100 2630 5600
MDS860S-20.4/17.3 24.2 864  20.4 295.8 QSL8.9 5300 4200 2100 2630 5280
24.2 864  17.3 250.85
MDS875S-23 24.5 875  23 333.5 QSM11 5300 4200 2100 2630 5600
 

Large Series    (Low&Medium pressure)
Large Series    (Low&Medium pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS900S-14.2/10.5 25.1 896  14.2 205.9 6LTAA8.9 5300 4200 2100 2630 5280
25.2 900  10.5 152.25
MDS910S-14 25.6 914  14 203 6LTAA8.9 5300 4200 2100 2630 5280
MDS970S-10 27.2 971  10 145 QSL8.9 5300 4200 2100 2630 5280
MDS1011S-8.6 28.3 1011  8.6 124.7 QSL8.9 5300 4200 2100 2630 5280
MDS1054S-12 29.5 1054  12 174 QSL8.9 5300 4200 2100 2630 5280
MDS1250S-8.6 35 1250  8.6 124.7 QSL8.9 5300 4200 2100 2630 5280
MDS1400S-13 40 1400 13 188.5 QSZ13 6200 4700 2100 2630 5800
MDS1600S-10.3 45 1600 10.3 149.35 QSZ13 6200 4700 2100 2630 5800
MDS1785S-13 50 1785 13 188.5 QSZ13 6200 4700 2100 2630 5800
MDS2140S-10 60 2142 10 145 QSZ14 7400 5400 2230 2630 8400
 
Large Series    (Medium&High pressure)

Large Series    (Medium&High pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS900S-20 25.3 904  20 290 QSM11 5300 4200 2100 2630 5800
MDS960S-18 26.9 961  18 261 QSM11 5300 4200 2100 2630 5800
MDS1000S-35 28.2 1000 35 507.5 QSZ13 6200 4700 2100 2630 7200
MDS1089S-25 30.5 1089  25 362.5 QSZ13 6200 4700 2100 2630 7200
MDS1200S-24 33.6 1200  24 348 QSZ13 6200 4700 2100 2630 7200
MDS1250S-21 35 1250  21 304.5 QSZ13 6200 4700 2100 2630 7200
MDS1250S-25 35 1250  25 362.5 QSZ13 6200 4700 2100 2630 7200
MDS1250S-30 35 1250 30 435 WP17G770E302 6200 4700 2100 2630 7800
MDS1250S-35 35 1250 35 507.5 WP17G770E302 6200 4700 2100 2630 7800
MDS1250S-40 35 1250 40 580 WP17G770E302 6200 4700 2100 2630 7800
MDS1428S-18 40 1428 18 261 QSZ13 6200 4700 2100 2630 7200
MDS1428S-35 40 1428 35 507.5 TAD1643VE-B 7400 5500 2180 2650 10000
MDS1428S-40 40 1428 40 580 QSK19 7400 5500 2180 2650 10000
MDS1600S-25 44.8 1600 25 362.5 WP17G770E302 7400 5500 2180 2650 10000

 

GTL Air compressor test system

 

 

 

FAQ:

Q: Are you a trading company or manufacturer?

A: We are a manufacturer.

 

Q: What are the products you operate?

A: CHINAMFG Power System is committed to the R&D and manufacturing of Diesel Generator, Screw Air Compressor, Diesel Pump, Lighting Tower, Welding Generator and related control system and accessories.

 

Q: How long is your delivery time?

A: 7-30 day

 

Q: What is your terms of payment?

A: T/T 30% in advance and TT 70% balance paid before shipment / 100% LC at sight.

 

Q: What is your warranty period?

A: Our payment terms are 12 months or 1000 running hours whichever comes first. But based on some special project, we can extend our warranty period.

 

Q: Do you provide customized services for the diesel generator?

A: Yes!

 

Warranty: 24month/2000 Hours
Lubrication Style: Lubricated
Cooling System: Water Cooling
Customization:
Available

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air compressor

How does variable speed drive technology improve air compressor efficiency?

Variable Speed Drive (VSD) technology improves air compressor efficiency by allowing the compressor to adjust its motor speed to match the compressed air demand. This technology offers several benefits that contribute to energy savings and enhanced overall system efficiency. Here’s how VSD technology improves air compressor efficiency:

1. Matching Air Demand:

Air compressors equipped with VSD technology can vary the motor speed to precisely match the required compressed air output. Traditional fixed-speed compressors operate at a constant speed regardless of the actual demand, leading to energy wastage during periods of lower air demand. VSD compressors, on the other hand, ramp up or down the motor speed to deliver the necessary amount of compressed air, ensuring optimal energy utilization.

2. Reduced Unloaded Running Time:

Fixed-speed compressors often run unloaded during periods of low demand, where they continue to consume energy without producing compressed air. VSD technology eliminates or significantly reduces this unloaded running time by adjusting the motor speed to closely follow the air demand. As a result, VSD compressors minimize energy wastage during idle periods, leading to improved efficiency.

3. Soft Starting:

Traditional fixed-speed compressors experience high inrush currents during startup, which can strain the electrical system and cause voltage dips. VSD compressors utilize soft starting capabilities, gradually ramping up the motor speed instead of instantly reaching full speed. This soft starting feature reduces mechanical and electrical stress, ensuring a smooth and controlled startup, and minimizing energy spikes.

4. Energy Savings at Partial Load:

In many applications, compressed air demand varies throughout the day or during different production cycles. VSD compressors excel in such scenarios by operating at lower speeds during periods of lower demand. Since power consumption is proportional to motor speed, running the compressor at reduced speeds significantly reduces energy consumption compared to fixed-speed compressors that operate at a constant speed regardless of the demand.

5. Elimination of On/Off Cycling:

Fixed-speed compressors often use on/off cycling to adjust the compressed air output. This cycling can result in frequent starts and stops, which consume more energy and cause mechanical wear. VSD compressors eliminate the need for on/off cycling by continuously adjusting the motor speed to meet the demand. By operating at a consistent speed within the required range, VSD compressors minimize energy losses associated with frequent cycling.

6. Enhanced System Control:

VSD compressors offer advanced control capabilities, allowing for precise monitoring and adjustment of the compressed air system. These systems can integrate with sensors and control algorithms to maintain optimal system pressure, minimize pressure fluctuations, and prevent excessive energy consumption. The ability to fine-tune the compressor’s output based on real-time demand contributes to improved overall system efficiency.

By utilizing variable speed drive technology, air compressors can achieve significant energy savings, reduce operational costs, and enhance their environmental sustainability by minimizing energy wastage and optimizing efficiency.

air compressor

What is the impact of altitude on air compressor performance?

The altitude at which an air compressor operates can have a significant impact on its performance. Here are the key factors affected by altitude:

1. Decreased Air Density:

As altitude increases, the air density decreases. This means there is less oxygen available per unit volume of air. Since air compressors rely on the intake of atmospheric air for compression, the reduced air density at higher altitudes can lead to a decrease in compressor performance.

2. Reduced Airflow:

The decrease in air density at higher altitudes results in reduced airflow. This can affect the cooling capacity of the compressor, as lower airflow hampers the dissipation of heat generated during compression. Inadequate cooling can lead to increased operating temperatures and potential overheating of the compressor.

3. Decreased Power Output:

Lower air density at higher altitudes also affects the power output of the compressor. The reduced oxygen content in the air can result in incomplete combustion, leading to decreased power generation. As a result, the compressor may deliver lower airflow and pressure than its rated capacity.

4. Extended Compression Cycle:

At higher altitudes, the air compressor needs to work harder to compress the thinner air. This can lead to an extended compression cycle, as the compressor may require more time to reach the desired pressure levels. The longer compression cycle can affect the overall efficiency and productivity of the compressor.

5. Pressure Adjustments:

When operating an air compressor at higher altitudes, it may be necessary to adjust the pressure settings. As the ambient air pressure decreases with altitude, the compressor’s pressure gauge may need to be recalibrated to maintain the desired pressure output. Failing to make these adjustments can result in underinflated tires, improper tool performance, or other issues.

6. Compressor Design:

Some air compressors are specifically designed to handle higher altitudes. These models may incorporate features such as larger intake filters, more robust cooling systems, and adjusted compression ratios to compensate for the reduced air density and maintain optimal performance.

7. Maintenance Considerations:

Operating an air compressor at higher altitudes may require additional maintenance and monitoring. It is important to regularly check and clean the intake filters to ensure proper airflow. Monitoring the compressor’s operating temperature and making any necessary adjustments or repairs is also crucial to prevent overheating and maintain efficient performance.

When using an air compressor at higher altitudes, it is advisable to consult the manufacturer’s guidelines and recommendations specific to altitude operations. Following these guidelines and considering the impact of altitude on air compressor performance will help ensure safe and efficient operation.

air compressor

How does an air compressor work?

An air compressor works by using mechanical energy to compress and pressurize air, which is then stored and used for various applications. Here’s a detailed explanation of how an air compressor operates:

1. Air Intake: The air compressor draws in ambient air through an intake valve or filter. The air may pass through a series of filters to remove contaminants such as dust, dirt, and moisture, ensuring the compressed air is clean and suitable for its intended use.

2. Compression: The intake air enters a compression chamber, typically consisting of one or more pistons or a rotating screw mechanism. As the piston moves or the screw rotates, the volume of the compression chamber decreases, causing the air to be compressed. This compression process increases the pressure and reduces the volume of the air.

3. Pressure Build-Up: The compressed air is discharged into a storage tank or receiver where it is held at a high pressure. The tank allows the compressed air to be stored for later use and helps to maintain a consistent supply of compressed air, even during periods of high demand.

4. Pressure Regulation: Air compressors often have a pressure regulator that controls the output pressure of the compressed air. This allows the user to adjust the pressure according to the requirements of the specific application. The pressure regulator ensures that the compressed air is delivered at the desired pressure level.

5. Release and Use: When compressed air is needed, it is released from the storage tank or receiver through an outlet valve or connection. The compressed air can then be directed to the desired application, such as pneumatic tools, air-operated machinery, or other pneumatic systems.

6. Continued Operation: The air compressor continues to operate as long as there is a demand for compressed air. When the pressure in the storage tank drops below a certain level, the compressor automatically starts again to replenish the compressed air supply.

Additionally, air compressors may include various components such as pressure gauges, safety valves, lubrication systems, and cooling mechanisms to ensure efficient and reliable operation.

In summary, an air compressor works by drawing in air, compressing it to increase its pressure, storing the compressed air, regulating the output pressure, and releasing it for use in various applications. This process allows for the generation of a continuous supply of compressed air for a wide range of industrial, commercial, and personal uses.

China Hot selling 2021 Hot Sale Industrial Heavy Duty 55cfm to 1600 Cfm Mining Drilling Portable Mobile Movable Diesel Engine Screw Type Rotary Mine Air Compressor   air compressor for saleChina Hot selling 2021 Hot Sale Industrial Heavy Duty 55cfm to 1600 Cfm Mining Drilling Portable Mobile Movable Diesel Engine Screw Type Rotary Mine Air Compressor   air compressor for sale
editor by CX 2023-11-10