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| Place of Origin | Germany |
| Brand Name | Shanghai Rotorcomp |
| Certification | ISO.TUV,CE,GS |
| Model Number | LGFD screw compressor |
1. World-leading Made in Germany Rotorcomp screw air end
2. 5 years warranty
3. Extraordinary cooling system design
4. Intelligent control system
5. higher efficient energy-saving motor in IP55 IE3 CE&MEPS, SF1.2
6. Unique driving guard system
7. ISO,TUV,GA,SGS certificates
Advantages of our new EVO-technology
New ROLLING PROFILE- ultimate efficiency with
reduced noise
Long life cycle due to increased bearing dimensions
and wear-free ROLLING PROFILE
Wide operating pressure range from 5 to 15 barg
High quality manufacturing and assembling
Made in Germany
Quality assurance ?bench test of every air end
before leaving our factory
Easy application selection with our new
ROTORCOMP SIZING AIR software
Highest flexibility for your package design
Suitable for all types of drive driving motors
Drive options: Belt drive, direct drive, internal gear drive
Base and face-flange mounting
Ultimate efficiency and reduced noise through
High volumetric output due to
• Reduced internal leakage
• Thermally optimized oil injection system
• Improved suction port efficiency giving reduced
internal losses
Low power consumption due to
• Optimized torque characteristics and reduced
internal friction
• Improved outlet port with lower pressure losses
Reduced noise and low vibration due to
• Smooth rolling of the rotors with new
ROLLING PROFILE®
• Optimized outlet port
The motor drives the main rotor through the coupling, the speed increasing gear or the belt. Since the two rotors mesh with each other, the main rotor directly drives the auxiliary rotor to rotate together. Under the relative negative pressure, the air is sucked in.
Under the action of the tooth peak and the tooth groove, the gas is transported and compressed, and when the rotor meshing surface is turned into communication with the exhaust port of the casing, the compressed gas begins to be discharged.
The working process of the worm compressor: the motor transmits the power to the worm shaft by a coupling or a belt, and the worm drives the star gear to move relatively in the worm groove, the volume of the closed element changes, the gas, the conveying compression, when the design is reached The pressure value is discharged into the oil separator by a symmetrical triangular exhaust port on the left and right sides of the main body casing.
And the Oil circuit of our LGFD rotary screw compressor is the amount of oil in the units is determined in such a way as to extend the oil change intervals (depending on ambient conditions).An oil level sensor is integrated as standard and is read by the controller. All the units in this series have a horizontal oil separation vessel in which the oil is separated from the compressed air highly efficiently at low speeds.
75KW air cooling compressor parameters
| ITEM | UNIT | MODEL | ||||
| LGFD-75 | ||||||
| Free air delivery | m3/min | 13.0 | 11.50 | 9.80 | 8.80 | |
| Max. working pressure | MPa | 0.8 | 1.0 | 1.3 | 1.5 | |
| Compressor type | Oil inject screw compressor | |||||
| Cooling type | Air cooling | |||||
| Driven type | Belt driven | |||||
| Inlet status | Temperature | ℃ | ≤55 | |||
| Pressure | MPa | Atmospheric pressure | ||||
| Relative humidity | ≤90% | |||||
| Noise Level | dB(A) | ≤76 | ||||
| Residual oil content | ppm | ≤1 | ||||
| Drive rotor speed | rpm | 5100 | 4500 | 3950 | 3600 | |
| Compressed air outlet temperature | ℃ | Ambient temperature＋10 | ||||
| Cooling air flow | m3/hr | 11200 | ||||
| Control mode | Intelligent controller | |||||
| Safety valve set pressure | MPa | 0.88 | 1.10 | 1.43 | 1.60 | |
| Lubricating oil volume | L | 50 | ||||
| Lubricating oil brand | ROTORCOMP | |||||
| Compressed air outlet connection | G2 | |||||
| Dimension | L | mm | 1750 | |||
| W | mm | 1200 | ||||
| H | mm | 1500 | ||||
| Net Weight | kg | 1540 | ||||
| Motor | Model | Y2250M2-2 | ||||
| Speed | rpm | 2970 | ||||
| Rated Power | KW | 75 | ||||
| Service factor | 1.2 | |||||
| Protection type | IP55 | |||||
| Insulation class | F | |||||
| Startup mode | ʏ-Δ starting | |||||
| Voltage | V | 380(Special on request) | ||||
| Frequency | Hz | 50(Special on request) | ||||
| Rated current | A | 139 | ||||
| Weight of motor | kg | 515 | ||||
| Note: |
| 1. The above parameters and color are designed according to customer needs, the parameters are for reference only, the final parameters of the drawings shall prevail; |
| 2. According to user requirements and needs, to join way: air/water cooling, oil content, weight, appearance size according to the need to design, to the final order and the technical agreement shall prevail; |
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3. Frequency converters (optional). 4. 1 years warranty, 5 years warranty for air end |
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