screw compressor


Cutting-edge core technology achieves the lowest cost of air compression

PM Variable Speed Drive Screw Air Compressor (APM)

The main parameters:

Output power: 7.5-75kw

Air flow: 1.0-9.7m3/min

Maximum working pressure: 0.8-1.0Mpa


Leading constant pressure control

AVF permanent magnet variable frequency screw compressor can sustain the supply at the pressure of 0.1 bar in any loading conditions. In case of larger demands for air supply, the compressor can increase its rotation speed without changing the compressor can reduce its rotation speed without changing the pressure to meet such demands. In case of no demands for air supply, the compressor will switch to sleep mode to save energy. When actual pressure achieves the wakening standard, the compressor will immediately start up with rapid response of frequency converters even in sleep mode.

New generation of high-efficient imported airend

  • Advanced and energy saved spiral tooth type technology
  • New-type 5:6 asymmetrical rotator tooth type
  • German screw compressor with large rotator and low rotation speed
  • Adopt top-level quality SKF taper-roller bearing imported with original packaging from Sweden
  • Relative power increases by more than 5%-10% in gas discharge when compared with that of ordinary machine model

Permanent magnetic motor

1.Reasonable structure and high power density
2.Very small rotator inertia and very fast response speed
3.Ultrahigh intrinsic coercive rare earth permanent magnetic material with strong anti demagnetizing capacity
4.Possible constant torque output within scope of locked rotator and rated rotating speed
5.Special asymmetrical magnetic circuit design, making low-rotating-speed torque ripple small
6.High balancing precision, stable and high-speed operation, low noise and small vibration
7.Full-sealed or high protection-grade appearance structural desig

Magnetic steel

1、 Punching uses high-performance low-loss silicon, we conduct simulation analysis of mechanical strength with finite element method so as to make rotator inertia reach the minimum on the condition that enough mechanical rigidity and mechanical strength.
2、Rotator magnetic steel adopts high-performance NdFeB permanent magnetic material to form sine wave air-gap field.
3、Axial flow uses the processing method of embedded bond, which simultaneously meets requirements of optical axis and bond axis.


1、Punching uses high-performance low-consumption silicon steel sheet;
2、Insulation grade of enameled wire is grade C and integral insulation is grade F;
3、Shell uses high-intensity aluminum profile shell, appearance and air flue are confirmed by final optimization through finite element temperature field analysis with large temperature gradient and good heat dissipation effect;pressure to guarantee the air volume. In case of lower demands for air supply

High-performance vector frequency converter

Compared with bearings of other brands, SKF bearing, it has good abrasive resistance, superior fatigue resistance, strong corrosion resistance and comfortable muting property, making longer service life, higher reliability and lower noise of permanent magnetic synchronous non-inductive motor. The compressor adopts infinite volume control air inlet system. It could operate without magnetic valve. Built-in function of the check valve can reduce malfunctions. The compressor is free from unloading process and shows higher energy efficiency. This compressor can operate at frequencies from 0-300HZ and realize high energy efficiency in real sense.

List of ingress protection:

Ingress Protection
IP65Dust tight.No ingress of dust.
Protected against jets of water.Limited ingress permitted.
IP54Dust protected.Limited ingress of dust permitted.Will not interfere with operation of the equipment.
Protected against water splashes from all directions. Limited ingress permitted.
IP23Protected against a solid object greater than 12.5mm such as a finger.
Protected against sprays of water up to 60 degrees from the vertical.Limited ingress permitted.

Technical Parameters

Model Power Pressure Air flow Noise Stage Exit pipediameter Boundary dimension(mm) Total quantity(kg)
Length Width Height
WZS-10APM 7.5 8 1.0 60±2 Single stage 3/4 800 750 1000 200
10 0.8
WZS-15APM 11 8 1.8 62±2 Single stage 1 1200 850 1300 260
10 1.6
WZS-20APM 15 8 2.2 63±2 Single stage 1 1200 850 1300 380
10 1.8
WZS-30APM 22 8 3.8 66±2 Single stage 11/4 1200 800 1300 420
10 3.0
WZS-40APM 30 8 5.0 68±2 Single stage 13/4 1380 850 1150 600
10 4.4
WZS-50APM 37 8 6.2 68±2 Single stage 11/2 1300 1000 1450 700
10 5.4
WZS-60APM 45 8 8.0 68±2 Single stage 11/2 1600 1000 1370 780
10 6.8
WZS-75APM 55 8 9.7 69±2 Single stage 21/2 2050 1270 1500 1350
10 8.5




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