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Screw Air Compressor
Huada SG Series Permanent Magnet Variable Frequency Screw Compressor: Reliable performance, competitive pricing, and truly dependable airflow capacity.
Aug 19 , 2026

Are you still carefully managing your equipment investment but struggling with the high electricity costs associated with conventional power-frequency machines? The HuaDa SG Series Permanent Magnet Variable Frequency Screw Compressor is perfectly tailored for small and medium-sized enterprises that cannot compromise on either budget or efficiency – combining the cost-saving benefits of variable frequency technology with the operational stability of traditional compressors.


1、Reliable quality, competitive pricing, and truly dependable capacity

The SG series seamlessly combines three key features – efficiency, stability, and durability – all in one product.

Reliable quality: Leveraging over 30 years of experience in screw pump manufacturing, the main unit features an integrated bearing–motor 1:1 direct-drive system – eliminating belt tension issues, gear wear, and misalignment errors – thereby reducing the "minor fault-induced downtime" that small and medium-sized enterprises fear most at the source.

Competitive pricing: The integration of direct drive and variable-frequency technology simplifies the transmission chain by eliminating pulleys and couplings, allowing the saved costs to be directly reflected in the quoted price – rather than achieving price reductions through component downsizing.

Sufficient air flow: Vector variable frequency drive enables the exhaust capacity to be dynamically adjusted in real time according to actual air demand – operating at full speed during loading and reducing speed during unloading – resulting in minimal pressure fluctuations and precisely matching supply to demand.


II. The Core Competence of the Three Major Systems

① High-efficiency integrated host system: The rotor features a new-generation profile design, resulting in lower energy loss; the main motor utilizes an integrated cast component, offering higher transmission efficiency, reduced noise levels, minimized vibration, and lower maintenance costs.

② Integrated Variable Frequency Drive Control System: Advanced speed regulation and variable frequency drive technology reduces costs; Touchscreen color display – dedicated human-machine interface for air compressors; High-integration design for compact size; Strong environmental adaptability and high product reliability.

③ Special Oil-Gas System: Special-designed external oil separation core; Integrated oil-gas drum end-cover design; Customized enlarged oil-gas separator core – delivers superior performance, high efficiency, and extended service life.

III. Aircraft Model and Key Specifications

Four models cover a power range of 7.5–37 kW, suitable for applications ranging from single workstations to entire production lines:

model

SG-10

SG-20

SG-30

SG-50

power of motor(kW)

7.5

15

22

37

Displacement (m³/min)

1.2/0.7

1.1/0.8

0.9/1.0

2.4/0.7

2.35/0.8

2.0/1.0

3.3/0.7

3.2/0.8

2.8/1.0

6.1/0.7

6.0/0.8

5.2/1.0

Exhaust pressure (MPa)

0.7/0.8/1.0

0.7/0.8/1.0

0.7/0.8/1.0

0.7/0.8/1.0

noisedB(A)

60±2

68±2

75±2

75±2

weight(kg)

90

160

220

315

Export pipe diameter

G 1/2"

G 3/4"

G 3/4"

G 1 1/4"

All models feature air cooling and 1:1 direct drive; exhaust temperature ≤ ambient temperature + 15°C.


IV. Typical Application Scenarios

• Industrial applications: Pneumatic wrenches, pneumatic drills, grinding, spraying, sheet metal bending, etc., all require a stable air supply.

• Building decoration: Equipped with a nail gun and spray painting equipment, suitable for high-intensity continuous operations.

• Agricultural production: Stable aerodynamic performance for landscape irrigation, greenhouse roller shutters, and sprinkler fertilization systems.

• Automotive parts and repair services: simultaneous use of multiple workstations for jacking equipment, tire removal and installation, and painting operations – all powered by compressed air.


V. Obtain exclusive energy efficiency calculation

Please submit your gas supply usage data, and we will promptly respond with a customized "SG Series Energy Efficiency Assessment Report" and equipment selection recommendations within 24 hours.

• Email: Cio@fj-hd.com

• Service Hotline: +86-595-87598920

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