China factory Adult CPAP Medical Surgical ICU Pediatric Invasive System Ventilator Machine Oxygen Concentrator Mini Piston Oil Less Free Oilless Air Compressor manufacturer

Product Description

Adult CPAP Medical Hospital Equipment Surgical ICU Pediatric Invasive System Ventilator Machine  Concentrator Piston Oil Less Free Oilless Oxygen mini Air Compressor

Oil-less Vacuum Pumps / Air Compressors

PRANSCH oil-less rocking piston pump and air compressor combines the best characteristics of traditional piston pumps(air compressor) and diaphragm pumps into small units with excellent features. 

  1. Light weight and very portable
  2. Durable and near ZERO maintenance
  3. Thermal protection (130 deg C)
  4. Power cord with plug, 1m length
  5. Shock mount
  6. Silencer – muffler
  7. Stainless steel vacuum and pressure gauge, both with oil damping
  8. Two stainless steel needle valves each with lock nut. 
  9. All nickel plated fittings
  10. Power supply 230V, 50/60 Hz

This series is ideal for use in applications where oil-mist is undesirable. For examples, pressure/vacuum filtration, air sampling, water aeration, flame photometer, etc. 


Model Frequency Flow Pressure Power Speed Current Voltage Heat Sound Weight Hole Installation Dimensions
Hz L/min Kpa Kw Min-1 A V 0 C dB(A) Kg mm mm
PM200C 50 50 200 0.12 1380 0.45 210/235 5-40 48 1.8 M5 L100xW74
60 58 200 0.13 1450 0.90 110/125 5-40 48 1.8 M5
PM300C 50 75 300 0.15 1380 0.76 210/235 5-40 45 3.2 M6 L118xW70
60 90 300 0.16 1450 1.52 110/125 5-40 45 3.2 M6
PM550C 50 105 600 0.32 1380 1.50 210/235 5-40 56 6.0 M6 L148xW83
60 115 600 0.35 1450 3.00 110/125 5-40 56 6.0 M6
PM1200C 50 120 300 0.45 1380 1.70 210/235 5-40 58 7.6 M6 L203xW86
60 145 300 0.49 1450 3.50 110/125 5-40 58 7.6 M6
PM1400C 50 160 700 0.45 1380 1.70 210/235 5-40 58 8.5 M6 L203xW86
60 180 700 0.49 1450 3.50 110/125 5-40 58 8.5 M6
PM2000C 50 230 800 0.55 1380 2.50 210/235 5-40 60 10.0 M6 L203xW86
60 250 800 0.60 1450 5.20 110/125 5-40 60 10.0 M6
HP2400C 50 240 900 0.90 1380 3.30 210/235 5-40 75 17.0 M7 L246xW127
60 258 900 1.00 1450 6.80 110/125 5-40 75 17.0 M7
PM3000C 50 250 1000 1.50 1380 4.20 210/235 5-40 76 17.5 M7 L246xW127
60 270 1000 1.70 1450 9.00 110/125 5-40 76 17.5 M7

Why use a Rocking Piston Product? 

Pransch oilless Rocking Piston air compressors and vacuum pumps, available in single, twin, miniature, and tankmounted
Styles, are the perfect choice for hundreds of applications. Choose from dual frequency, shaded pole, 
And permanent split capacitor (psc) electric motors with AC multi-voltage motors to match North American, 
European, and CHINAMFG power supplies. A complete line of recommended accessories as well as 6, 12, and
24 volt DC models in brush and brushless types are also available. 

The rocking piston combines the best characteristics of piston and diaphragm air compressors into a small unit
With exceptional performance. Air flow capabilities from 3.4 LPM to 5.5 CFM (9.35 m3/h), pressure to 175 psi
(12.0 bar) and vacuum capabilities up to 29 inHg (31 mbar). Horsepowers range from 1/20 to 1/2 HP
(0.04 to 0.37 kW). 

These pumps are made to stand up through years of use. The piston rod and bearing assembly are bonded
Together, not clamped; They will not slip, loosen, or misalign to cause trouble. 

Clean Air
Because CHINAMFG pumps are oil-free, they are ideal for use in applications in laboratories, hospitals, and the
Food industry where oil mist contamination is undesirable. 


  1. Transportation application include: Auto detailing Equipment, Braking Systems, Suspension Systems, Tire Inflators
  2. Food and Beverage application include: Beverage dispensing, coffee and Espresso equipment, Food processing and packaging, Nitrogen Generation
  3. Medical and laboratory application include: Body fluid Analysis equipment, Dental compressors and hand tools, dental vacuum ovens, Dermatology equipment, eye surgery equipment, lab automation, Liposuction equipment, Medical aspiration, Nitrogen Generation, Oxygen concentrators, Vacuum Centrifuge, vacuum filtering, ventilators
  4. General industrial application include: Cable pressurization, core drilling
  5. Environmental application include: Dry sprinkler systems, Pond Aeration, Refrigerant Reclamation, Water Purification Systems
  6. Printing and packaging application include: Vacuum frames
  7. Material Handling application include: Vacuum mixing

Lubrication Style: Oil-free
Cooling System: Air Cooling
Structure Type: Closed Type
Compress Level: Single-Stage
Refrigerant Type: Air
Material: Steel


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

How do you choose the right air compressor for woodworking?

Choosing the right air compressor for woodworking is essential to ensure efficient and effective operation of pneumatic tools and equipment. Here are some factors to consider when selecting an air compressor for woodworking:

1. Required Air Volume (CFM):

Determine the required air volume or cubic feet per minute (CFM) for your woodworking tools and equipment. Different tools have varying CFM requirements, so it is crucial to choose an air compressor that can deliver the required CFM to power your tools effectively. Make sure to consider the highest CFM requirement among the tools you’ll be using simultaneously.

2. Tank Size:

Consider the tank size of the air compressor. A larger tank allows for more stored air, which can be beneficial when using tools that require short bursts of high air volume. It helps maintain a consistent air supply and reduces the frequency of the compressor cycling on and off. However, if you have tools with continuous high CFM demands, a larger tank may not be as critical.

3. Maximum Pressure (PSI):

Check the maximum pressure (PSI) rating of the air compressor. Woodworking tools typically operate within a specific PSI range, so ensure that the compressor can provide the required pressure. It is advisable to choose an air compressor with a higher maximum PSI rating to accommodate any future tool upgrades or changes in your woodworking needs.

4. Noise Level:

Consider the noise level of the air compressor, especially if you’ll be using it in a residential or shared workspace. Some air compressors have noise-reducing features or are designed to operate quietly, making them more suitable for woodworking environments where noise control is important.

5. Portability:

Assess the portability requirements of your woodworking projects. If you need to move the air compressor frequently or work in different locations, a portable and lightweight compressor may be preferable. However, if the compressor will remain stationary in a workshop, a larger, stationary model might be more suitable.

6. Power Source:

Determine the power source available in your woodworking workspace. Air compressors can be powered by electricity or gasoline engines. If electricity is readily available, an electric compressor may be more convenient and cost-effective. Gasoline-powered compressors offer greater flexibility for remote or outdoor woodworking projects where electricity may not be accessible.

7. Quality and Reliability:

Choose an air compressor from a reputable manufacturer known for producing reliable and high-quality equipment. Read customer reviews and consider the warranty and after-sales support offered by the manufacturer to ensure long-term satisfaction and reliability.

8. Budget:

Consider your budget and balance it with the features and specifications required for your woodworking needs. While it’s important to invest in a reliable and suitable air compressor, there are options available at various price points to accommodate different budgets.

By considering these factors and evaluating your specific woodworking requirements, you can choose an air compressor that meets the demands of your tools, provides efficient performance, and enhances your woodworking experience.

air compressor

How do you choose the right size of air compressor for your needs?

Choosing the right size of air compressor is essential to ensure optimal performance and efficiency for your specific needs. Here are some factors to consider when selecting the appropriate size:

1. Air Demand: Determine the air demand requirements of your applications. Calculate the total CFM (Cubic Feet per Minute) needed by considering the air consumption of all the pneumatic tools and equipment that will be operated simultaneously. Choose an air compressor with a CFM rating that meets or exceeds this total demand.

2. Pressure Requirements: Consider the required operating pressure for your applications. Check the PSI (Pounds per Square Inch) rating of the tools and equipment you will be using. Ensure that the air compressor you choose can deliver the necessary pressure consistently.

3. Duty Cycle: Evaluate the duty cycle of the air compressor. The duty cycle represents the percentage of time the compressor can operate within a given time period without overheating or experiencing performance issues. If you require continuous or heavy-duty operation, choose a compressor with a higher duty cycle.

4. Power Source: Determine the available power source at your location. Air compressors can be powered by electricity or gasoline engines. Ensure that the chosen compressor matches the available power supply and consider factors such as voltage, phase, and fuel requirements.

5. Portability: Assess the portability requirements of your applications. If you need to move the air compressor frequently or use it in different locations, consider a portable or wheeled compressor that is easy to transport.

6. Space and Noise Constraints: Consider the available space for installation and the noise restrictions in your working environment. Choose an air compressor that fits within the allocated space and meets any noise regulations or requirements.

7. Future Expansion: Anticipate any potential future expansions or increases in air demand. If you expect your air demand to grow over time, it may be wise to choose a slightly larger compressor to accommodate future needs and avoid the need for premature replacement.

8. Budget: Consider your budgetary constraints. Compare the prices of different air compressor models while ensuring that the chosen compressor meets your specific requirements. Keep in mind that investing in a higher-quality compressor may result in better performance, durability, and long-term cost savings.

By considering these factors and evaluating your specific needs, you can choose the right size of air compressor that will meet your air demand, pressure requirements, and operational preferences, ultimately ensuring efficient and reliable performance.

China factory Adult CPAP Medical Surgical ICU Pediatric Invasive System Ventilator Machine Oxygen Concentrator Mini Piston Oil Less Free Oilless Air Compressor   manufacturer China factory Adult CPAP Medical Surgical ICU Pediatric Invasive System Ventilator Machine Oxygen Concentrator Mini Piston Oil Less Free Oilless Air Compressor   manufacturer
editor by CX 2023-11-10