China Good quality 50HP 37kw Oil Injected Screw Air Compressor for Metal Cutting Machinery wholesaler

Product Description

CHINAMFG belt  series variable frequency oil-less screw compressors are lower noise, coupling high efficiency, reliable quality.
ZheJiang CHINAMFG CHINAMFG features:
1.Perfect performance
2.Microcomputer controller

Model: DBF50A
Free air delivery: 4.9~6.5 m3/min 
Working pressure: 7~13bar
Screw air end rotor lobe: 5:6
Brand of screw air end: German Rotorcomp with 6 pcs CHINAMFG bearings
Control:  Micro PLC controller
Driven: belt driven
Cooling: by air
Electric motor: 50hp 37kW 380v/50hz/3ph,protection level IP55
Discharge temperature: less than ambient +8 ºC
Noise: less than 68 dB(A)
Air outlet size: G1 1/2″
Dimension: 1500*940*1415mm
Weight: 680kg

DBF Series (Belt) Variable FrequencyScrew Compressor Technical Parameters:

Model  Air flow Capacity(m3/min)/cfm Power
(W×D×H mm)
0.7Mpa/7bar 0.8Mpa/8bar 1.0Mpa/10bar 1.3Mpa/13bar
m3/min cfm m3/min cfm m3/min cfm m3/min cfm
DBF-7.5A 0.91 32.1 0.84 29.7 0.75 26.5 0.63 22.2 5.5/7.5 65 G3/4” 780×680×800 320
DBF-10A 1.3 45.9 1.2 42.4 1 35.3 0.84 29.7 7.5/10 65 G3/4” 780×680×800 350
DBF-15A 1.7 60.0 1.6 56.5 1.4 49.4 1.2 42.4 11/15 65 G3/4” 1100×800×980 430
DBF-20A 2.4 87.4 2.3 81.2 2 70.6 1.6 56.5 15/20 68 G3/4” 1100×800×980 460
DBF-25A 3 105.9 2.9 102.4 2.7 95.3 2.3 81.2 18.5/25 68 G1” 1250×870×1180 620
DBF-30A 3.7 130.6 3.6 127.1 3.2 113 2.8 98.9 22/30 68 G1” 1250×870×1180 680
DBF-40A 5.2 183.6 5 176.6 4.5 158.9 3.8 134.2 30/40 69 G1” 1250×870×1180 790
DBF-50A 6.5 229.5 6.2 218.9 5.6 197.7 4.9 173 37/50 69 G11/2” 1540×950×1290 920
DBF-60A 8 282.5 7.3 257.8 7 247.2 5.9 208.3 45/60 70 G11/2” 1540×950×12900 1050
DBF-75A 10.1 356.6 9.5 335.4 8.7 307.2 7.8 275.4 55/75 70 G2” 1600×1150×1420 1580


1.A represents air-cooling type,W represents water-cooling type;2.Working Environment temperature: -5ºC~45ºC;
3.Discharge temperature is less than ambient temperature +10ºC~15ºC;
4.Drive Mode: belt driven;
5.Startup Mode: frequency start
6.Work Power: 380V / 50HZ, 460V / 230V / 6KV and 10KV voltages can be made for customers;
7.F.A.D volume flow test is according to ASMC PTC9 or ISO1217 standard (GB/T3853)

Electric Inverter Variable Speed Screw Air Compressor Advantages
DEHAHA VSD (Variable Speed Drive) rotary screw air compressors are suitable for customers who need different amount of air supply and extremely accurate pressure. It can facilitate customers to optimize production process and improve productivity.
The principle of VSD is to adjust the motor rotation speed automatically according to the actual air demand. The reduced system pressure decreases the total energy consumption of the whole system, which can reduce energy costs by 35% or more. 
The VSD air compressor reduces the energy consumption through the following points:

1. Removing the low efficiency transformation process from the full loading to unloading
2. Avoiding the power during the unloading process
3. Keeping the pipeline pressure drop under 0.1bar
4. Reducing the average working pressure
5. Lowering the system pressure to reduce the system leakage
6. The soft starting method increases the current balance and avoids the current surge
7. A flexible choice from7 to 13bar which reduces the power consumption most.

Q1:Are you factory or trading company?

A1: We are factory.


Q2:Where is your factory located? How can I visit there?

A2: Our factory is located in HangZhou City, ZheJiang Province, China. We can pick up you from ZheJiang , it’s about 1 hour from ZheJiang Xihu (West Lake) Dis. Airport to our factory. Warmly welcome to visit us!


Q3: Will you provide some spare parts of the machines?

A3: Yes, of course.


Q4: Warranty terms of your machine?

A4: Two years warranty for Air End, 1 year for spare part.


Q5: How long will you take to arrange production?

A5:380V 50HZ we can delivery the goods within 14 days. Other electricity or other color we will delivery within 22 days.


Q6:How does your factory do regarding quality control?

A6: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.


Q7: Can you accept OEM orders?

A7: Yes, with professional design team, OEM orders are highly welcome.

Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Structure Type: Closed Type
Installation Type: Stationary Type


air compressor

How are air compressors utilized in pharmaceutical manufacturing?

Air compressors play a crucial role in pharmaceutical manufacturing, where they are utilized for various critical applications. The pharmaceutical industry requires a reliable source of clean and compressed air to ensure the safety, efficiency, and quality of its processes. Here’s an overview of how air compressors are utilized in pharmaceutical manufacturing:

1. Manufacturing Processes:

Air compressors are used in numerous manufacturing processes within the pharmaceutical industry. Compressed air is employed for tasks such as mixing and blending of ingredients, granulation, tablet compression, coating, and encapsulation of pharmaceutical products. The controlled delivery of compressed air facilitates precise and consistent manufacturing processes, ensuring the production of high-quality pharmaceuticals.

2. Instrumentation and Control Systems:

Pharmaceutical manufacturing facilities rely on compressed air for powering instrumentation and control systems. Compressed air is used to operate pneumatic valves, actuators, and control devices that regulate the flow of fluids, control temperature and pressure, and automate various processes. The clean and dry nature of compressed air makes it ideal for maintaining the integrity and accuracy of these critical control mechanisms.

3. Packaging and Filling:

Air compressors are employed in pharmaceutical packaging and filling processes. Compressed air is used to power machinery and equipment for bottle cleaning, labeling, capping, and sealing of pharmaceutical products. Compressed air provides the necessary force and precision for efficient and reliable packaging, ensuring product safety and compliance.

4. Cleanroom Environments:

Pharmaceutical manufacturing often takes place in controlled cleanroom environments to prevent contamination and maintain product quality. Air compressors are used to supply clean and filtered compressed air to these cleanrooms, ensuring a controlled and sterile environment for the production of pharmaceuticals. Compressed air is also utilized in cleanroom air showers and air curtains for personnel and material decontamination.

5. Laboratory Applications:

In pharmaceutical laboratories, air compressors are utilized for various applications. Compressed air is used in laboratory instruments, such as gas chromatographs, mass spectrometers, and other analytical equipment. It is also employed in clean air cabinets, fume hoods, and laminar flow benches, providing a controlled and clean environment for testing, analysis, and research.

6. HVAC Systems:

Air compressors are involved in heating, ventilation, and air conditioning (HVAC) systems in pharmaceutical manufacturing facilities. Compressed air powers the operation of HVAC controls, dampers, actuators, and air handling units, ensuring proper air circulation, temperature control, and environmental conditions in various manufacturing areas.

By utilizing air compressors in pharmaceutical manufacturing, the industry can maintain strict quality standards, enhance operational efficiency, and ensure the safety and efficacy of pharmaceutical products.

air compressor

How are air compressors utilized in pneumatic tools?

Air compressors play a crucial role in powering and operating pneumatic tools. Here’s a detailed explanation of how air compressors are utilized in pneumatic tools:

Power Source:

Pneumatic tools rely on compressed air as their power source. The air compressor generates and stores compressed air, which is then delivered to the pneumatic tool through a hose or piping system. The compressed air provides the force necessary for the tool to perform various tasks.

Air Pressure Regulation:

Air compressors are equipped with pressure regulation systems to control the output pressure of the compressed air. Different pneumatic tools require different air pressure levels to operate optimally. The air compressor’s pressure regulator allows users to adjust the output pressure according to the specific requirements of the pneumatic tool being used.

Air Volume and Flow:

Air compressors provide a continuous supply of compressed air, ensuring a consistent air volume and flow rate for pneumatic tools. The air volume is typically measured in cubic feet per minute (CFM) and determines the tool’s performance capabilities. Higher CFM ratings indicate that the pneumatic tool can deliver more power and operate at a faster rate.

Tool Actuation:

Pneumatic tools utilize compressed air to actuate their mechanical components. For example, an air-powered impact wrench uses compressed air to drive the tool’s internal hammer mechanism, generating high torque for fastening or loosening bolts and nuts. Similarly, air-powered drills, sanders, nail guns, and spray guns rely on compressed air to power their respective operations.


One of the significant advantages of pneumatic tools is their versatility, and air compressors enable this flexibility. A single air compressor can power a wide range of pneumatic tools, eliminating the need for separate power sources for each tool. This makes pneumatic tools a popular choice in various industries, such as automotive, construction, manufacturing, and woodworking.


Air compressors come in different sizes and configurations, offering varying degrees of portability. Smaller portable air compressors are commonly used in applications where mobility is essential, such as construction sites or remote locations. The portability of air compressors allows pneumatic tools to be used in various work environments without the constraints of being tethered to a fixed power source.

Overall, air compressors are integral to the functionality and operation of pneumatic tools. They provide the necessary power, air pressure regulation, and continuous airflow required for pneumatic tools to perform a wide range of tasks efficiently and effectively.

air compressor

What is the role of air compressor tanks?

Air compressor tanks, also known as receiver tanks or air receivers, play a crucial role in the operation of air compressor systems. They serve several important functions:

1. Storage and Pressure Regulation: The primary role of an air compressor tank is to store compressed air. As the compressor pumps air into the tank, it accumulates and pressurizes the air. The tank acts as a reservoir, allowing the compressor to operate intermittently while providing a steady supply of compressed air during periods of high demand. It helps regulate and stabilize the pressure in the system, reducing pressure fluctuations and ensuring a consistent supply of air.

2. Condensation and Moisture Separation: Compressed air contains moisture, which can condense as the air cools down inside the tank. Air compressor tanks are equipped with moisture separators or drain valves to collect and remove this condensed moisture. The tank provides a space for the moisture to settle, allowing it to be drained out periodically. This helps prevent moisture-related issues such as corrosion, contamination, and damage to downstream equipment.

3. Heat Dissipation: During compression, air temperature increases. The air compressor tank provides a larger surface area for the compressed air to cool down and dissipate heat. This helps prevent overheating of the compressor and ensures efficient operation.

4. Pressure Surge Mitigation: Air compressor tanks act as buffers to absorb pressure surges or pulsations that may occur during compressor operation. These surges can be caused by variations in demand, sudden changes in airflow, or the cyclic nature of reciprocating compressors. The tank absorbs these pressure fluctuations, reducing stress on the compressor and other components, and providing a more stable and consistent supply of compressed air.

5. Energy Efficiency: Air compressor tanks contribute to energy efficiency by reducing the need for the compressor to run continuously. The compressor can fill the tank during periods of low demand and then shut off when the desired pressure is reached. This allows the compressor to operate in shorter cycles, reducing energy consumption and minimizing wear and tear on the compressor motor.

6. Emergency Air Supply: In the event of a power outage or compressor failure, the stored compressed air in the tank can serve as an emergency air supply. This can provide temporary air for critical operations, allowing time for maintenance or repairs to be carried out without disrupting the overall workflow.

Overall, air compressor tanks provide storage, pressure regulation, moisture separation, heat dissipation, pressure surge mitigation, energy efficiency, and emergency backup capabilities. They are vital components that enhance the performance, reliability, and longevity of air compressor systems in various industrial, commercial, and personal applications.

China Good quality 50HP 37kw Oil Injected Screw Air Compressor for Metal Cutting Machinery   wholesaler China Good quality 50HP 37kw Oil Injected Screw Air Compressor for Metal Cutting Machinery   wholesaler
editor by CX 2023-11-01