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China Best Sales 103kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use 12v air compressor

Product Description

103kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use

Product Parameters


Model SDP 
560G II
420H II
Discharge Air  Volume(m³/min) 5 7 10 10 12 13 16 12 16 15 17
Discharge Pressure(MPa) 0.7 0.8 0.8 1.3 0.8 1.3 1.3 1.7 1.4 1.3 1..7
Discharge Pipc . Dia 1*1-1/4″ 1*3/4″ 1*1-1/2″ 1*2″
Discharge Tessure 110ºC
Gas Oil Contet ≤5PPM
Unit Drive Way Direct Driven
Diesel Engine Parameters Model V2403-T YC4DK95-H3DD WP4.1G140E331 WPG160E331 TAD552VE WP6G190E330 WP6G240E330
Power(Kw) 33 70 103 118 160 140 176
Speed(r/min) 2000 2300 2000 2300 2300 1800 2200 2100
Displacement(L) 2.6 3.621 4.088 4.5 5.1 6.75
Dimension Overall Length (mm) 3840 3170 3700 3700 3900 4300 4400
W/O Towber(mm) 2100 2250 2500 2500 2900 3100 3300
Width(mm) 1490 1600 1960 1960 1900 1900 1900
Height(mm) 1780 1650 2000 2000 2100 2200 2100
Unit Weight(KG) 1270 1650 2000 2200 2800 2610 2710 2950 3000

Detailed Photos

1.Brand Screw air end
Large rotors,low rpm,long life span
High efficiency,low noise,low vibration,high reliability
Bearing life over 100,000 hours
Little leakage triangle,low power/airflow ratio
Less wearing parts,low maintenance cost

2.Diesel engine
High efficiency air-cooling totally enclosed motor
Large starting torque
Low noise,better structure
Original imported bearing
Low rpm

3.Brand Intake Valve Assembie
Non-load starting,butterfly inlet comtrolling valve
0~100% stepless volume regulation,aluminium alloy unibody casing
With Non-return value for heavy load,piston mover
Non-return value close under urgent stop or power failure

4.Air Filter
Air filter from Mann Hummel Germany
Dust removal 99.9%,filtering fineness 3 μm
Ensuring the clean air for inlet
Prolonging the life span of air system,large size,over 3000 hours

5.Oil System
Oil Filter from Mann Hummel Germany
Reliably removing the dust in oil
Oil fineness less then 0.1 μm
Ensuring the clearness and lubrication of oil system,good cooling function

Product Description

Company Profile

HangZhou CHINAMFG Compressor Co., Ltd is a leading CHINAMFG manufacturer in HangZhou, China. We focus on the research & Develop and manufacture of screw air compressors and related after-treatment equipment over 18 years experience. Our screw compressors include air & Water cooled compressor, belt & Direct driven compressor, permanent magnet inverter compressor, low pressure compressor, oil free compressor, diesel driven portable compressor. Our products have passed ISO9001 certificate. We offer you world-class products with advanced features, competitive price, and reliable quality and on time delivery. We always make superior quality CHINAMFG because of adopting Germany advanced production technology and European famous brands machine parts for compressors. CHINAMFG COMPROSS has an experienced expert team, not only provide users with high-quality and high-efficiency compressed air system equipment, but also provide users with optimum air system solutions during before-sale, sale and after-sale services. In China Market, our compressor has become the preferred choice to customer through technical superiority, strong sales network and excellent after-sales service. In the world market, our products are available in 40 countries covering Europe, North America, South America Australia, Asia, Africa, and Middle-East. Welcome more agents and dealers join us and make long term cooperation!

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After-sales Service: 12 months
Warranty: 12 months
Lubrication Style: Lubricated


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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

Are There Oil-Free Screw Compressors Available?

Yes, oil-free screw compressors are available in the market to cater to applications where oil contamination is a concern. Here’s a detailed explanation:

Oil-free screw compressors, as the name suggests, are designed to operate without the use of lubricating oil in the compression chamber. These compressors offer several advantages in industries where oil-free compressed air or gas is required, such as in food and beverage, pharmaceutical, electronics, and certain manufacturing processes.

The key features and considerations of oil-free screw compressors include:

  • 1. Specialized Design: Oil-free screw compressors are designed with specialized materials, coatings, and sealing systems to eliminate the need for lubricating oil in the compression process. The rotors and other internal components are constructed to ensure minimal friction and wear, even in the absence of oil.
  • 2. Dry Compression: Unlike lubricated screw compressors, oil-free screw compressors rely on dry compression methods. The compression chamber is designed to achieve compression without the presence of oil, ensuring that the discharged air or gas is free from oil contaminants. This is particularly critical in industries where oil contamination can have detrimental effects on product quality or equipment performance.
  • 3. Sealing Technology: Oil-free screw compressors employ advanced sealing technologies to prevent air or gas leakage between the high-pressure and low-pressure sides of the compressor. These sealing systems ensure efficient compression while maintaining the required clearances between the rotors and the compressor housing.
  • 4. Cooling Systems: Oil-free screw compressors utilize alternative cooling methods, such as air or water cooling, to dissipate the heat generated during compression. Efficient cooling is crucial to prevent overheating and ensure reliable operation.
  • 5. Filtration Systems: Oil-free compressors often incorporate high-quality filtration systems to remove particulates, moisture, and other contaminants from the incoming air or gas. These filtration systems help maintain the integrity of the compressor and ensure the delivery of clean, oil-free compressed air or gas.
  • 6. Application-Specific Solutions: Oil-free screw compressors are available in various sizes and configurations to meet specific application requirements. They can be tailored to deliver the desired air or gas flow rates, pressures, and purity levels.

It’s important to note that oil-free screw compressors generally have higher initial costs compared to lubricated compressors due to their specialized design and materials. However, they offer benefits such as reduced maintenance, minimized risk of oil contamination, and compliance with stringent industry standards or regulations.

When considering an oil-free screw compressor, it’s crucial to assess the specific application needs, air quality requirements, and operating conditions. Consulting with manufacturers or suppliers can help in selecting the most suitable oil-free screw compressor for a particular industry or process.

In summary, oil-free screw compressors are available and offer a reliable and efficient solution for applications where oil-free compressed air or gas is essential. These compressors are designed with specialized features to ensure dry compression, reliable sealing, effective cooling, and high-quality filtration.

air compressor

What Is the Impact of Ambient Temperature on Screw Compressor Performance?

Ambient temperature has a significant impact on the performance of screw compressors. Here’s a detailed explanation:

Screw compressors, like other types of compressors, rely on the surrounding environment to dissipate heat and maintain optimal operating conditions. The ambient temperature directly affects the compressor’s efficiency, capacity, power consumption, and overall performance.

Here are the key ways in which ambient temperature influences screw compressor performance:

1. Cooling Efficiency:

The cooling efficiency of a screw compressor is affected by the temperature difference between the compressed gas and the ambient air. As the ambient temperature increases, the temperature difference decreases, making it more challenging to transfer heat effectively. This can lead to higher discharge temperatures and reduced cooling efficiency, potentially impacting the compressor’s overall capacity and performance.

2. Capacity and Power Consumption:

Higher ambient temperatures can decrease the capacity of a screw compressor. Compressors are typically designed and rated based on specific operating conditions, including a defined ambient temperature range. When the ambient temperature exceeds the design limits, the compressor may experience reduced volumetric efficiency, resulting in a decrease in its overall capacity. Additionally, the compressor may require more power to maintain the desired pressure levels, leading to increased power consumption.

3. Heat Recovery:

In some applications, screw compressors are equipped with heat recovery systems to utilize the waste heat generated during compression. The effectiveness of heat recovery is influenced by the ambient temperature. Higher ambient temperatures can reduce the temperature differential available for heat exchange, limiting the potential for heat recovery and decreasing the overall system efficiency.

4. Lubrication and Cooling:

Screw compressors rely on lubrication systems to reduce friction and prevent wear between moving parts. The ambient temperature affects the performance of the lubricant. In high ambient temperatures, the lubricant may experience decreased viscosity, potentially leading to inadequate lubrication and increased wear on compressor components. Similarly, the cooling system of the compressor, including fans and heat exchangers, may be less effective in higher ambient temperatures, impacting the compressor’s ability to dissipate heat.

5. Operating Envelope:

Screw compressors have specified operating envelopes, which define the acceptable range of operating conditions, including ambient temperature. Operating the compressor outside its designed ambient temperature range can result in reduced reliability, increased maintenance requirements, and potential system failures. It is crucial to adhere to the manufacturer’s guidelines and ensure that the compressor operates within the recommended ambient temperature limits.

6. Control and Protection:

Modern screw compressors often feature advanced control and protection systems that monitor various parameters, including ambient temperature. These systems may adjust compressor operation, such as modulation of capacity or cooling strategies, to optimize performance and protect the compressor from operating outside safe limits. Understanding the impact of ambient temperature allows for appropriate adjustments and settings to maintain reliable and efficient compressor operation.

It’s important to note that different compressor models and manufacturers may have specific performance characteristics and operating limits. Therefore, consulting the manufacturer’s documentation and guidelines for the particular screw compressor in use is essential.

In summary, ambient temperature significantly affects the performance of screw compressors. Higher ambient temperatures can reduce cooling efficiency, decrease compressor capacity, increase power consumption, and impact lubrication and cooling systems. Adhering to recommended operating conditions and considering ambient temperature limitations are crucial for ensuring optimal performance, reliability, and longevity of screw compressors.

air compressor

What Is a Screw Compressor?

A screw compressor is a type of positive displacement compressor that operates based on the principle of rotary motion. Here’s a detailed explanation:

Working Principle:

A screw compressor consists of two helical rotors, typically called male and female rotors, that rotate in opposite directions within a housing. The rotors have specially designed profiles that interlock with each other, creating a series of compression chambers as they rotate. As the rotors rotate, the volume of these chambers decreases, compressing the air or gas trapped inside.

Compression Process:

As the air or gas enters the screw compressor, it gets trapped between the rotors’ lobes or threads. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors and gradually compressed. The compression occurs continuously and smoothly as the air or gas moves from the suction side to the discharge side of the compressor. The interlocking rotors ensure a continuous flow of compressed air or gas without pulsation.

Oil-Injected and Oil-Free Variants:

Screw compressors are available in both oil-injected and oil-free variants. In oil-injected screw compressors, a small amount of lubricating oil is injected into the compression chamber to provide lubrication, cooling, and sealing between the rotors. The oil also helps in reducing friction and minimizing wear. Oil-injected screw compressors are commonly used in various industrial applications where a small amount of oil in the compressed air is acceptable.

On the other hand, oil-free screw compressors are designed to operate without the need for oil lubrication. These compressors use specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and prevent the need for oil. Oil-free screw compressors are often favored in applications where oil-free and contaminant-free compressed air is essential, such as in food and beverage, pharmaceutical, and electronics industries.


Screw compressors are widely used in various industries for a range of applications. They are commonly employed in manufacturing plants, refineries, power generation facilities, and other industrial settings to supply compressed air or gas for pneumatic tools, process equipment, air conditioning systems, and more. The ability of screw compressors to deliver a continuous flow of compressed air or gas makes them suitable for applications that require a steady and reliable source of compressed air.


Screw compressors offer several advantages compared to other types of compressors. They provide high efficiency and can deliver a large volume of compressed air or gas. The continuous compression process results in smooth operation with minimal pulsation. Additionally, screw compressors are known for their compact design, low vibration levels, and relatively quiet operation.

In summary, a screw compressor is a rotary positive displacement compressor that uses interlocking helical rotors to compress air or gas. It operates based on a continuous compression process and is available in both oil-injected and oil-free variants. Screw compressors find widespread use in various industries for applications that require a reliable source of compressed air or gas.

China Best Sales 103kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use   12v air compressorChina Best Sales 103kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use   12v air compressor
editor by CX 2024-03-28

China Hot selling 97kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use wholesaler

Product Description

Screw sort air compressor composition of a unique design, a compact, stylish visual appeal, higher effectiveness, modest energy consumption, reduced sounds traits and lengthy daily life, is a smart atmosphere-welcoming items. Broadly utilized in metallurgy, machinery, chemical compounds, and mining, and electrical power industries of the perfect gasoline resource tools.     
1.The third generation of superior rotor and concise ingestion management technique.
two.Effective centrifugal separator oil and gasoline, fuel oil content is small,tube and main of prolonged life. 
three. Efficient, low sound suction supporter of the total use of export dynamic pressure 
    increased result of warmth transfer (air-cooled).
four. Computerized h2o-cooling method for large air compressor to offer more efficient.
5.Fault analysis system, the control panel is simple to work.
six Removable door, products routine maintenance, provider handy. 
7.Micro-digital processing so that temperature, strain and other parameters are carefully monitored.
Merchandise HIGHLIGHTS
one.The manufacturer power,dependable top quality, stable overall performance.The harsh thermal equilibrium serviceability can ensure that the machine function efficiently under large temperature environment  (≤40ºC).
two.Exclusive patent layout, gentle load startup method, the air management design is adapt to the  drilling work with large security.
3.Efficient CZPT technique, divided into 3 elements: water- cooled ,mid- chilly, oil cold, which make certain the reliable operation of diesel engine, and it truly is appropriate for higher temperature operating environment.
4.Independent investigation and improvement of the reverse door layout, rational layout, which is effortless to do typical maintenace ,with advantages of the fixed and portable compressor.
five.A solitary position lifting, forklift hole device, equipped with drag ring.It is appropriate for restore vehicle transport, simple to transfer and installation of the unit.
6.Water-proof and dustproof layout, which is appropriate for out of doors hard operating surroundings.
seven.According to customer requirements, the heating boiler and distant components is obtainable for chilly beginning.
Complex Parameters:

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How to Choose the Appropriate Air Compressor

An air compressor utilizes pressurized air to electrical power a assortment of equipment. They are most generally used to energy nailers and effect wrenches. Other well-liked utilizes for air compressors incorporate paint sprayers and affect wrenches. While all air compressors have the same standard design, their specialty differs. In the long run, their variances arrive down to the amount of air they can thrust. Read through on for details on every variety of air compressor. These instruments are fantastic for numerous different purposes, and picking the appropriate air compressor is dependent on your particular demands.

Electric motor

While getting an electric powered motor for air compressor, compatibility is a essential aspect. Not all motors perform with the identical kind of air compressor, so it’s critical to verify the manufacturer’s directions before buying. By carrying out this, you can stay away from wasting cash on an incompatible motor. An additional essential consideration is speed. A motor’s speed is its price of rotation, calculated in revolutions per moment. It is critical that you acquire a motor with enough pace to meet the requirements of your air compressor.
Normally, an electric powered motor for air compressor is 1.5 hp. It is excellent for use with health care gear and steel-reducing machines. It also performs effectively under continuous procedure and offers a high performance and vitality-preserving performance. Furthermore, it features an desirable price, making it a excellent option for a extensive selection of purposes. If you are seeking for a motor for an air compressor, appear no more than a ZYS collection.
A motor’s security class suggests how the motor will work. Defense lessons are specified by the IEC 60034-5. These are mentioned with two digits and signify the defense against reliable objects and h2o. For case in point, an IP23 ranking indicates that the motor will be protected from reliable objects, although IP54 means that it will protect from dust and drinking water sprayed from all instructions. It is crucial to select a motor with the correct defense class for your air compressor.
When selecting an electric motor, you must contemplate no matter whether it truly is appropriate with the brand name of air compressor. Some could be suitable, while other individuals may possibly demand superior electronics abilities to restore. However, most air compressors are lined by guarantee, so it truly is critical to check with the company if the guarantee is still in influence before you commit a dime on a substitution. The motor must be changed if it has unsuccessful to execute as developed.

Oil bathtub

Air compressors require appropriate lubrication to purpose proficiently. The piston must attract air with minimal friction. Relying on their style, air compressors can either be oil-lubricated or oil-free. The previous employs oil to decrease piston friction, although the latter splashes it on the cylinder bearings and walls. These kinds of air compressors are frequently known as oil-flooded air compressors. In order to hold their oil baths thoroughly clean, they are advised for use in places with higher dust levels.

Begin/cease handle

An air compressor can be managed by a begin/stop management. This sort of control sends a signal to the main motor that activates the compressor when the need for air falls below a preset limit. This handle strategy is efficient for more compact air compressors and can be beneficial for lowering strength fees. Start off/end control is most effective in programs in which air stress does not modify regularly and the place the compressor is not necessary to operate continually.
To troubleshoot this issue, you need to have to examine the energy supply of your compressor. To verify the offer side, use a voltage keep track of to figure out if energy is flowing to the compressor. Make sure that the power source to the compressor is steady and stable at all moments. If it fluctuates, the compressor may possibly not start off or end as expected. If you are not able to discover the difficulty with the air compressor power offer, it might be time to change it.
In addition to the start off/cease handle, you might want to obtain further air receivers for your air compressor. These can enhance the capacity of air saved and reduce the amount of moments it begins and stops. Yet another way to decrease the quantity of starts for every hour is to include far more air receivers. Then, you can modify the management to match your demands. You can also put in a pressure gauge that monitors the compressor’s overall performance.
Start off/end handle for air compressors can be complex, but the simple components are comparatively easy to understand. One way to test them is to switch the compressor on or off. It is usually positioned on the exterior of the motor. If you’re not sure of the spot of these parts, verify the capacitors and make certain that the air compressor is not working even though you are not utilizing it. If it does, try to get rid of the capacitor.
Variable displacement manage is one more way to change the amount of air flowing into the compressor. By managing the amount of air, the manage can delay the use of further compressors until far more essential air is offered. In addition to this, the device can also keep an eye on the strength used in the compressor. This management approach can outcome in sizeable power savings. You can even save on the volume of electricity by employing variable displacement manage. It is crucial for productive compressed air systems.

Variable speed generate

A VFD, or variable frequency travel, is a variety of electric powered motor that adjusts its velocity to match the desire for air. It is an productive way to minimize energy expenses and boost technique reliability. In fact, reports have revealed that a twenty% reduction in motor pace can conserve up to fifty% of power. In addition, a VFD can check additional variables this kind of as compressor oil stress and motor temperature. By getting rid of guide checks, a VFD will boost the overall performance of the application and decrease working costs.
In addition to decreasing strength expenses, variable-pace drives also enhance efficiency. A variable-velocity air compressor reduces the risk of system leaks by 30 %. It also minimizes the danger of system leaks by reducing stress in the system. Simply because of these rewards, a lot of governments are promoting this technology in their industries. Numerous even offer you incentives to aid organizations upgrade to variable-velocity drives. Consequently, the variable-speed generate can gain many air compressor installations.
A single major benefit of a variable-velocity travel is its potential to improve vitality use. Variable frequency drives are able to ramp up and down to match the desire for air. The purpose is to optimize the stress and flow in the program so that the greatest “useless band” happens between forty percent and eighty percent of complete load. A variable-velocity compressor will also boost strength efficiency due to the fact of its programmability.
A variable-pace air compressor can also be utilized to management the quantity of air that is compressed by the program. This feature adjusts the frequency of power supplied to the motor based mostly on the desire. If the need for air is minimal, the frequency of the motor will lessen to help save strength. On the other hand, if there is an excess desire for air, the variable-velocity compressor will improve its pace. In addition, this kind of air compressor is more efficient than its fastened-speed counterpart.
A VFD has numerous benefits for compressed air systems. First, it assists stabilize the stress in the pipe community, thereby minimizing the electricity losses thanks to upstream strain. It also aids reduce the energy consumption brought on by fluctuations in upward strain. Its advantages are also far-reaching. And as extended as the air pressure and air offer is appropriately sized, a VFD will assist optimize the performance of compressed air methods.

China Hot selling 97kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use     wholesaler China Hot selling 97kw SDP350G Diesel driven Portable Screw Air Compressor used for drilling,sandblasting industrial use     wholesaler