75HP-120HP Regular Frequency Screw Air Compressor For Sale

75HP-120HP Regular Frequency Screw Air Compressor For Sale

Pressure (Mpa): 0.7/0.8/1.0/1.2
Air flow (m³/min): 7.69-16.2
Power: 75hp-120hp/55kw-90kw
ambient temperature: -5℃~+45℃
Drive Mode: Direct Driven
Startup Mode: Y-▲Mode

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You can see the following 75hp, 100hp and 120hp regular frequency screw air compressor specifications.

Model JNG-75A JNG-100A JNG-120A
Cooling method Air-cooling Air-cooling Air-cooling
Pressure (Mpa) 0.7/0.8/1.0/1.2 0.7/0.8/1.0/1.2 0.7/0.8/1.0/1.2
Air delivery (m3/min) 10.8/10.1/8.50/7.69 13.5/12.7/11.3/10.0 16.2/15.2/14.3/12.9
Motor Power    (KW) 55 75 90
Speed    (rpm) 2980 2980 2980
Start method Y-Δ Y-Δ Y-Δ
Voltage  (V/Hz) 380/50 380/50 380/50
Protection grade IP54 IP54 IP54
Insulation grade F F F
Driven type Direct Direct Direct
Noise  (dBA) 68 70 70
Gas oil content (ppm) ≤3 ≤3 ≤3
Outlet temperature   (℃) ≤Ambient temperature +15 ≤Ambient temperature +15 ≤Ambient temperature +15
Control type of exhaust volume Intake accommodation control Intake accommodation control Intake accommodation control
Setting pressure of safety valve   (Mpa) Air compressor exhaust pressure +0.1 Air compressor exhaust pressure +0.1 Air compressor exhaust pressure +0.1
Lubricating oil quantity  (L) 50 54 70
Lubricating oil brand Jinniu Jinniu Jinniu
Size L  (mm) 1900 2320 2320
W (mm) 1235 1330 1330
H (mm) 1570 1680 1680
Weight  (KG) 1750 1820 2200

Why regular frequency air compressors need maintenance?

If your home or your factory is using an air compressor, then the following air compressor basic maintenance and recommendations are important to you. If you are new staff in the air compressor industry, hope these information are useful to you. Please click the send inquiry price button if you are ready to purchase KingBull regular frequency screw air compressor.  By the way, our company provide customized regular frequency air compressor service. Email:info@fntcompressor.com

How to maintain air compressor?

In order to enable the regular frequency screw air compressor to operate normally and reliably, and to ensure the service life of the air compressor unit. You should formulate a detailed maintenance plan. Perform fixed-person operation, regular maintenance, regular inspection and maintenance to keep the air compressor unit clean, oil-free and free of dirt.

100 hp regular frequency air compressor for trucks

When the maintenance and replacement of air compressor parts. It must be determined that the pressure in the air compressor system has been released. And air compressor has separated from other pressure sources already. The switch on the main circuit has been disconnected, and the safety sign of not closing has been made. Email:info@fntcompressor.com

Air compressor lubricating oil

The replacement time of compressor cooling lubricating oil depends on the operating environment, humidity, dust and whether there is acid and alkali gas in the air. The new air compressor shall be replaced with new lubricating oil for the first 500 hours of operation. After that, lubricating oil shall be replaced every 4,000 hours according to the normal oil replacement period. And the fixed speed air compressor unit with less than 4,000 hours of annual operation shall be replaced once a year. Email:info@fntcompressor.com

The oil filter must be replaced in the first 300-500 hours of starting operation. After the second 2,000 hours of use, and then every 2,000 hours of normal time.

120 hp fixed speed rotary screw compressor apperaence photo
Air compressor belt

If you use belt driven screw air compressor, the tightness of the belt shall be checked every 2000 hours or so. If the belt is too loose, it shall be adjusted until the belt is tightened. In order to protect the belt, it is necessary to prevent the belt from being scrapped due to oil pollution during the whole process. Email:info@fntcompressor.com

Replace regular frequency screw air compressor parts with original parts of the company. Otherwise, the supplier will not be responsible for matching problems. KingBull regular frequency air compressor manufacturer provides air compressor parts always, we only charge the parts cost price.

two stage screw air compressor supplier

Regular frequency maintenance advice

The safety valve has been adjusted before the whole air compressor machine leaves the factory. KingBull air compressor supplier does not encourage users to adjust the safety valve by themselves. If necessary, the adjustment shall be carried out under the guidance of supplier maintenance personnel to avoid adverse consequences.
The following compressor maintenance recommendations for your reference. Email:info@fntcompressor.com

Weekly:
A.Check the unit for abnormal sound and leakage.
B.Check whether the meter reading is correct.
Check whether the temperature display is normal. Email:info@fntcompressor.com

Monthly:
A.Check whether there is any rust or loose place inside the air compressor. If there is rust, oil or paint the rust and tighten the loose place.
B.Discharge of condensed water.

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Every three months:
a.Remove the dust on the outer surface of the cooler and the fan cover and fan blades
b.Add lubricant to the motor bearing
c.Check the hose for aging or cracking
d.Check the electrical components and clean the electrical control box. Email:info@fntcompressor.com

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