Hot Sale JNV-50A VFD Screw Air Compressor

Hot Sale JNV-50A VFD Screw Air Compressor

Pressure (Mpa): 0.7/0.8/1.0/1.2
Air flow (m³/min): 5.06-6.58
Power: 50hp/37kw
ambient temperature: -5℃~+45℃
Drive Mode: Direct Driven
Startup Mode: VSD

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KINGBULL JNV-50A VFD air compressor

Product Description

JNV-50A VFD Screw Air Compressor has always been the hot selling product of KINGBULL air compressor factory. JNV-50A belongs to variable frequency drive air compressor.  Variable frequency drive air compressor automatically adjusts the speed of the air compressor according to the amount of air used by the user and maintains a stable system pressure.

When the air consumption of the system is reduced, the compressed air volume provided by the VFD air compressor will be larger than the system consumption. At this time, the variable frequency compressor will reduce the rotating speed and reduce the exhaust volume of the compressor to maintain a stable system pressure value. If the air consumption of the system increases, the compressed air volume provided by the VFD air compressor will be smaller than the system consumption. And the frequency conversion compressor will increase the rotating speed, increase the exhaust volume of the compressor. So as to maintain the stability of the system pressure value.

50 hp variable speed drive air compressor

This mode of operation allows the variable frequency drive air compressor to directly respond to changes in system pressure. So as to provide the amount of gas consumed by the system. Through this operation mode, the variable frequency drive air compressor can maintain the best operation efficiency between the output air volume and the system consumption. The output air volume of ordinary air compressor is constant. The actual consumption of compressed air is generally fluctuating.

air compressor parts

Customers generally choose the air compressor model to meet the maximum actual air consumption. When the output air volume is greater than the actual consumption, the air compressor adopts no-load mode to adjust the system pressure. And a certain amount of energy consumption will be lost when the air compressor is no-load. The advantages of VFD screw air compressor can not only save electricity, but also provide stable exhaust pressure, improve motor power factor. At the same time, VFD screw air compressor can reduce start-up power supply effectively and prolong the service life of compressor.

KINGBULL vsd screw air compressor advantages

Product Parameter

The following table is the detailed parameters of JNV-50A air cooling variable frequency drive screw air compressor. At the same time, our company supports screw air compressor customization.

Model JNV-50A
Cooling method Air-cooling
Pressure (Mpa) 0.7/0.8/1.0/1.2
Air delivery (m3/min) 6.58/6.26/5.80/5.06
Motor Power    (KW) 37
Speed    (rpm) 2980
Start method VFS
Voltage  (V/Hz) 380/50
Protection grade IP54
Insulation grade F
Driven type Direct
Noise                (dBA) 63
Gas oil content      (ppm) ≤3
Outlet temperature   (℃) ≤Ambient temperature +15
Control type of exhaust volume Intake accommodation control
Setting pressure of safety valve   (Mpa) Air compressor exhaust pressure +0.1
Lubricating oil quantity  (L) 30
Lubricating oil brand KINGBULL
Size L          (mm) 1550
W         (mm) 1000
H          (mm) 1440
Weight                (KG) 1150

Product Application

JNV-50A air cooling VFD screw air compressor is general machinery. Therefore, the application range of VFD screw air compresso is very wide. Such as the ones listed below.

  • Aircraft manufacturing: spray washing machines, demoulding, drive assembly tools, drilling rigs, steam hammers, lifting hoists, combination knives, reamers, rivet guns, screwdrivers, forging hammers.
  • Automobile manufacturing: spray washing machine, drive assembly tools, hoist, pneumatic control, forging workshop, casting workshop, sheet metal workshop.air compressor Automobile manufacturing
  • Beverage factory: bottle washing machine, canning machine, internal spraying of wine barrels, gas for food industry.
  • Cement manufacturing: storage ventilation, cement slurry mixing, cement bag cleaning seal, raw material mixing, bucket car, cleaning equipment, clinker cooling, transportation cement and coal.
  • Hydropower plant: engine control, lock maintenance, drive controller, drive lubrication pump, drive lock, start control, clean garbage net. Email:info@fntcompressor.comair compressor beverage factory
  • Food industry (general application): mixing liquid, fermentation tank gas (oxygen), cleaning equipment with nozzle, cleaning container with nozzle, transfer raw materials, food dehydration, filtration.
  • Glass factory: bottle blowing and glassware, blowing tube and electron tube, combustion gas, transmission raw material, glass etching clear light and drilling, conveying glass, pneumatic control.air compressor bottle blowing

Product Advantages

  • Energy saving.
  • Reduce operating costs.
  • Improve the accuracy of pressure control.
  • Extend the service life of screw air compressor.
  • Reducing noise.
  • Reduce current fluctuation during start-up of screw air compressor unit.air compressor productionscrew air compressor productionJNV-50A air compressor production

Product Packing&Delivery

All of our air compressors are packed by export wooden case or according customer’s requirement.

JNV-50A screw air compressor

Product Warranty

KINGBULL air compressors have undergone rigorous data testing before leaving the factory, all of which are qualified and high quality products. We have a comprehensive after-sales service system and a clear warranty period. Air compressor unit 2 year warranty. Air end 1 year warranty. And we provide free spare parts during the warranty period.

air compressor warranty

Why Choose Us?

With excellent variable frequency drive screw air compressor quality and perfect after-sales service system, KINGBULL air compressor has won the trust and favor of customers. The following are the advantages of choosing our air compressor factory. Same price, higher configuration; Same configuration, lower price.

our service

Customer Feedback

KINGBULL customer feedback


Q1:  Why customer choose us?

A: Kaifeng Jinniu Industrial Equipment Co., Ltd has more than 23 years of history. We specialize in the production of Rotary Screw Air Compressor. We warmly welcome your wholesale order or small order for quality test.

Q2:  Are you a manufacturer or trading company?

A:  We are professional manufacturer with big modern factory in Kaifeng City, Henan province, China, 1 hour to Xinzheng Airport, 1 hour to Zhengzhou fast train station. Both OEM & ODM service can be accepted.

Q3:  What’s your delivery time?

A: 20 ft container (about 30-50 unit), it will take about 15 days.

Q4: Where is your warranty?

A:Our air compressor motor is guaranteed for two years and the whole machine is guaranteed for one year.

Q5: What’s your production capacity?

A:100 unit per week for screw air compressor

200 unit per week for piston air compressor

Q6: What’s your MOQ?

A:1 unit

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