SDF Tunnel Ventilation Fan is designed for tunnel construction ventilation, long-distance air supply and underground working area airflow support.
It is suitable for road tunnels, railway tunnels, mine tunnels and other construction ventilation projects.
The fan can be selected according to tunnel length, duct diameter, required airflow, pressure loss and site working conditions.
Qiyue Fan provides tunnel ventilation fan selection support for construction and engineering projects.
SDF Tunnel Ventilation Fan is a forced-draft counter-rotating axial fan designed for tunnel construction ventilation, long-distance air supply and underground working area airflow support. It is suitable for road tunnels, railway tunnels, mine tunnels and other engineering ventilation projects.
The fan features a reasonable structure, complete specifications, high efficiency, low noise and long air supply distance. It helps improve tunnel working conditions, reduce manual ventilation work and save ventilation time.
Project Selection Focus
Fan Type
Counter-rotating axial fan
Application
Tunnel construction
Selection Basis
Tunnel length and duct resistance
Series Options
A / B / C / D
Designed for Tunnel Construction Air Supply
Tunnel construction ventilation is different from ordinary workshop ventilation. The fan needs to overcome air duct resistance, long-distance pressure loss, construction dust, underground working space and continuous operation requirements. The SDF series is developed for forced air supply in tunnel and underground engineering environments.
It can also be used in metallurgy, chemical, mining and other ventilation systems where strong axial airflow and long-distance air delivery are required.
For selection, please provide tunnel length, duct diameter, required airflow, pressure loss, working altitude, power supply and installation method. These factors directly affect fan model and motor power.
Typical Engineering Applications
01
Road Tunnel Construction
Provides fresh air supply for excavation, lining, equipment operation and underground construction work.
02
Railway Tunnel Ventilation
Supports long-distance air delivery where tunnel length and duct resistance require stronger fan pressure.
03
Mine Tunnel Air Supply
Used for underground tunnel ventilation where reliable air supply is needed for working areas.
04
Industrial Ventilation Systems
Can also be applied in metallurgy, chemical and mining ventilation systems according to actual conditions.
Main Advantages
Long-Distance Air SupplySuitable for tunnel projects where air must be delivered through long ventilation ducts.
Counter-Rotating Axial StructureThe contra-rotating axial design helps provide stronger pressure performance for tunnel air delivery.
Complete Model RangeA, B, C and D series options support different airflow, pressure and power requirements.
Engineering Selection SupportModel selection can be matched according to tunnel length, duct diameter, resistance and site conditions.
SDF Series A Performance Data
SDF Series A is suitable for high-speed tunnel air supply applications. The following data is for preliminary selection.
Fan Model
Airflow
m³/min
Pressure
Pa
Speed
r/min
Max Efficiency Power
kW
Max Motor Power
kW
SDF(A)-2-No4.0
90–140
275–1450
2900
3.3
2.2×2
SDF(A)-2-No5.0
214–328
485–2695
2900
9.5
5.5×2
SDF(A)-2-No5.6
250–385
540–2900
2900
17.8
11×2
SDF(A)-2-No6.0
310–480
1350–4600
2900
25.1
15×2
SDF(A)-2-No6.3
450–725
1500–5000
2900
30.2
18.5×2
SDF(A)-2-No6.5
500–800
1600–5400
2900
47.4
22×2
SDF(A)-2-No7.1
624–990
1900–6400
2900
54.2
30×2
SDF(A)-2-No7.5
700–1100
2120–6750
2900
67.3
37×2
SDF(A)-2-No8.0
760–1225
2400–7500
2900
83.7
45×2
SDF(A)-2-No8.0
770–1300
2600–8150
2900
102.3
55×2
SDF Series B Performance Data
SDF Series B is suitable for larger tunnel ventilation projects with higher airflow and pressure requirements.
Fan Model
Airflow
m³/min
Pressure
Pa
High-Efficiency Airflow
m³/min
Speed
r/min
Max Efficiency Power
kW
Max Motor Power
kW
SDF(B)-2-No9.6
680–1325
500–3200
1100
1480
58
30×2
SDF(B)-2-No10
770–1500
550–3500
1225
1480
71
37×2
SDF(B)-2-No10.5
891–1736
606–3859
1415
1480
85.5
45×2
SDF(B)-2-No11
1015–1985
624–4150
1550
1480
107
55×2
SDF(B)-2-No11.5
1171–2281
727–4628
1863
1480
135
75×2
SDF(B)-2-No12.5
1550–2912
878–5355
2385
1480
216
110×2
SDF(B)-2-No13
1695–3300
930–5920
2691
1480
259
132×2
SDF(B)-2-No14
2113–4116
1078–6860
3361
1480
300
160×2
SDF(B)-2-No14
1399–2725
473–3100
2226
980
110
75×2
SDF(B)-2-No15
1721–3352
543–3559
2738
980
156
90×2
SDF(B)-2-No16
2088–4068
618–4049
3323
980
206
110×2
SDF(B)-2-No17
2505–4879
697–4571
3986
980
293
160×2
SDF(B)-2-No18
2973–5792
782–5124
4731
980
389
200×2
SDF(B)-2-No19
3210–6175
829–5412
5045
980
407
220×2
SDF(B)-2-No20
3465–6684
878–5820
5478
980
472
250×2
SDF(B)-2-No22
4158–8020
1010–6926
6552
980
596
315×2
SDF(B)-2-No24
4948–9550
1192–8173
7730
980
685
355×2
SDF Series C Performance Data
SDF Series C provides high, medium and low speed options for flexible tunnel ventilation selection.
Fan Model
Speed Level
Airflow
m³/min
Pressure
Pa
High-Efficiency Airflow
m³/min
Speed
r/min
Max Efficiency Power
kW
Max Motor Power
kW
SDF(C)-No10
High
770–1500
550–3500
1225
1480
71
37×2
SDF(C)-No10
Medium
640–1010
240–3500
825
980
21.9
12×2
SDF(C)-No10
Low
420–760
140–880
619
750
9.3
6×2
SDF Series C supports No10 to No14 with high, medium and low speed options. Full model data can be provided according to tunnel length, duct diameter, required airflow and pressure.
SDF Series D Performance Data
SDF Series D is designed for higher motor matching requirements and larger tunnel air delivery conditions.
Fan Model
Speed
r/min
Airflow
m³/min
Pressure
Pa
Max Motor Power
kW
SDF(D)-No5.0
2900
130–275
860–4800
5.5×4
SDF(D)-No5.3
2900
214–328
970–5390
7.5×4
SDF(D)-No5.6
2900
250–385
1080–5800
11×4
SDF(D)-No6.0
2900
275–432
2700–9200
15×4
SDF(D)-No6.3
2900
318–500
3000–10000
18.5×4
SDF(D)-No6.5
2900
350–550
3200–10800
22×4
SDF(D)-No7.1
2900
410–680
3800–12800
30×4
Larger D series models are available up to SDF(D)-No17, with airflow up to 5100 m³/min and motor power up to 160×4 kW.
Information Needed for Selection
Tunnel LengthTunnel length directly affects duct resistance and required fan pressure.
Duct DiameterVentilation duct diameter affects airflow velocity and pressure loss.
Required AirflowPlease provide required airflow or construction ventilation target.
Power SupplyVoltage, frequency and motor power requirements should be confirmed before quotation.
Get a tunnel fan selection quote
Send: Tunnel Length | Duct Diameter | Airflow | Pressure | Power Supply | Working Site
