SDS Tunnel Jet Fan is designed for road tunnel ventilation, longitudinal airflow control and smoke exhaust support.
It is suitable for highway tunnels, urban tunnels, underground passages and tunnel ventilation upgrade projects.
The fan can be selected according to tunnel length, required air velocity, installation space, noise requirement and ventilation design.
Qiyue Fan provides tunnel jet fan selection support for engineering ventilation projects.
SDS Tunnel Jet Fan is designed for road tunnel ventilation, longitudinal airflow control and smoke exhaust support. It is suitable for highway tunnels, railway tunnels, metro tunnels, urban underground passages and tunnel ventilation upgrade projects.
Compared with ordinary axial fans, the SDS tunnel jet fan focuses on thrust, airflow organization, corrosion resistance, high-temperature reliability and stable operation in tunnel environments.
Jet Fan Selection Focus
Fan Type
Axial tunnel jet fan
Diameter
φ630–φ1600 mm
Max Thrust
Up to 3500 N
Options
SDS(K) / SDS(R)
Designed for Tunnel Operation Ventilation
Tunnel jet fans are mainly used to create longitudinal airflow inside tunnels. They help move polluted air, control vehicle exhaust concentration and support smoke movement direction during emergency ventilation.
The SDS series was developed after studying subway, highway and railway tunnel projects, as well as tunnel design and installation requirements. The product is suitable for tunnel environments that require efficiency, corrosion resistance, high-temperature reliability and stable long-term operation.
SDS Tunnel Jet Fan is different from SDF construction ventilation fan. SDF is mainly used for construction-stage duct air supply, while SDS is mainly used for tunnel longitudinal ventilation and smoke exhaust support.
SDS(K) and SDS(R) Ventilation Forms
Type
Ventilation Direction
Typical Use
Selection Note
SDS(K)
Unidirectional jet fan
Road tunnel longitudinal ventilation and regular airflow control
Suitable when one-way airflow direction is required
SDS(R)
Reversible jet fan
Bidirectional airflow control and emergency smoke exhaust support
Can reverse and reach rated speed within 30 seconds
SDS(K) Unidirectional Tunnel Jet Fan Performance Data
SDS(K) is a unidirectional tunnel jet fan. It is commonly used for longitudinal ventilation systems where the tunnel airflow direction is fixed. Final selection should be confirmed by thrust demand, tunnel length, installation spacing, noise requirement and tunnel ventilation design.
Model
Poles
Speed
r/min
Blade Angle
Airflow
m³/s
Thrust
N
Power
kW
Noise
dB(A)
SDS(K)-4K
2P
2900
a1–a4
2.0–3.9
46–102
0.75–2.2
63–73
SDS(K)-6K
2P
2900
a1–a4
4.1–6.5
102–245
2.2–7.5
71–75
SDS(K)-5.6K
2P
2900
a1–a4
6.0–8.4
175–340
4–11
67–73
SDS(K)-6.3K
2P
2900
a1–a5
9.5–14.0
250–660
5.5–18.5
71–75
SDS(K)-7.1K
2P
2900
a1–a5
12.0–17.5
320–680
7.5–22
71–75
SDS(K)-8K
4P
1470
a1–a5
10.0–16.5
210–520
4–11
63–71
SDS(K)-9K
4P
1470
a1–a5
16.0–24.0
380–850
7.5–22
70–75
SDS(K)-10K
4P
1470
a1–a6
21.0–30.0
640–1100
11–30
71–75
SDS(K)-11.2K
4P
1470
a1–a5
26.8–37.6
765–1600
15–45
69–75
SDS(K)-12.5K
4P
1470
a1–a6
36.0–50.0
855–2200
18.5–75
70–79
SDS(K)-14K
6P
980
a1–a5
31.5–46.5
730–1600
15–45
72–75
SDS(K)-16K
6P / 8P
980 / 740
a1–a6
40.0–68.0
1100–3200
22–90
69–75
SDS(R) Reversible Tunnel Jet Fan Performance Data
SDS(R) is a reversible tunnel jet fan. It is used when bidirectional airflow control or emergency smoke control is required. The reversible design can switch forward and reverse rotation and reach rated speed within 30 seconds.
Model
Poles
Speed
r/min
Blade Angle
Airflow
m³/s
Thrust
N
Power
kW
Noise
dB(A)
SDS(R)-4B
2P
2900
a1–a4
2.0–3.9
46–102
0.75–2.2
63–73
SDS(R)-6K
2P
2900
a1–a4
4.1–6.5
102–245
2.2–7.5
71–75
SDS(R)-5.6K
2P
2900
a1–a4
6.0–8.4
175–340
4–11
67–73
SDS(R)-6.3K
2P
2900
a1–a5
9.5–14.0
250–660
5.5–18.5
71–75
SDS(R)-7.1K
2P
2900
a1–a5
12.0–17.5
320–680
7.5–22
71–75
SDS(R)-8K
4P
1470
a1–a5
10.0–16.5
210–520
4–11
63–71
SDS(R)-10K
4P
1470
a1–a6
21.0–30.0
640–1100
11–30
71–75
SDS(R)-12.5K
4P
1470
a1–a6
36.0–50.0
855–2200
18.5–75
70–79
SDS(R)-16K
6P / 8P
980 / 740
a1–a6
40.0–68.0
1100–3200
22–90
69–75
Typical Application Scenarios
01
Highway Tunnel Ventilation
Supports longitudinal airflow control for vehicle exhaust dilution and tunnel air quality improvement.
02
Emergency Smoke Exhaust
Reversible SDS(R) models help control smoke movement direction during emergency ventilation conditions.
03
Metro and Railway Tunnels
Suitable for underground transport tunnels where reliable ventilation and airflow control are required.
04
Tunnel Upgrade Projects
Can be used for ventilation renovation where thrust, noise, installation clearance and airflow direction must be checked.
Model Selection Information
Tunnel LengthTunnel length affects airflow organization and the number of jet fans required.
Required Air VelocityDesign air velocity is important for normal ventilation and emergency smoke control.
Installation SpaceConfirm tunnel clearance, mounting bracket position and maintenance access.
Noise RequirementNoise control should be checked for urban tunnels, metro projects and long-term operation.
Get a tunnel jet fan selection quote
Send: Tunnel Length | Required Air Velocity | Fan Diameter | SDS(K) or SDS(R) | Noise Requirement | Quantity
