Becker SV8.400/2 5.5kW Side Channel Blower
The Becker SV8.400/2 is a two-stage side channel blower delivering 210 m³/h nominal capacity at 50 Hz, with maximum relative vacuum of -400 mbar and maximum positive pressure of +450 mbar.
Powered by a 5.5kW motor, this higher-performance SV8 configuration combines useful industrial airflow with substantial vacuum and pressure capability. The particularly strong differential available from the two-stage design makes the SV8.400/2 suitable for applications where system resistance or the required working vacuum exceeds the capability of many single-stage side channel blowers.
Regenerative compression is non-contact impellors, with no sliding vanes and no requirement for lubricating oil within the process-air chamber.
Becker side channel blower supply and technical support from Vacuum Pumps UK.
Replacing a Becker SV8.400/2?
Send us photographs of the existing blower together with clear images of its Becker identification plate and motor nameplate.
We can assist with identifying the existing specification and selecting a suitable replacement.
Blower Type
Two Stage
side channel blower
Nominal Capacity
210 m³/h
at 50 Hz
Maximum Vacuum
-400 mbar
relative at 50 Hz
Maximum Pressure
+450 mbar
relative at 50 Hz
Motor Power
5.5kW
50 Hz motor
High Differential Performance from the SV8.400/2
The Becker SV8.400/2 combines a nominal capacity of 210 m³/h with considerably greater differential capability than the smaller SV8 two-stage models. Maximum relative vacuum reaches -400 mbar, while maximum positive pressure extends to +450 mbar.
This combination gives the blower a broad range of potential industrial duties. On the vacuum side, the -400 mbar capability is useful where machinery requires stronger suction than lower-differential side channel blowers can provide. On the pressure side, +450 mbar allows the blower to overcome appreciable system resistance in conveying, aeration, drying and other process-air installations.
The two-stage arrangement is central to this performance. Rather than discharging the air after a single regenerative compression section, the air passes through successive stages, allowing additional differential to be developed before it leaves the blower.
Within each stage, the rotating impeller transfers energy repeatedly to the air as it travels around the side channel. This regenerative principle provides continuous airflow without the sliding compression components found in rotary vane machines.
Because the impeller does not rely upon sliding carbon blades to generate vacuum or pressure, the process is non-contact. Lubricating oil is also unnecessary within the compression chamber, making side channel technology suitable for applications requiring an oil-free process-air path.
Becker SV8.400/2 Technical Specification
The 5.5kW SV8.400/2 has a nominal capacity of 210 m³/h at 50 Hz. Maximum relative vacuum is -400 mbar and maximum relative positive pressure is +450 mbar.
| Model | Stage | Nominal Capacity 50 Hz |
Maximum Vacuum | Maximum Pressure | Motor Power |
| SV8.400/2 | Two Stage | 210 m³/h | -400 mbar | +450 mbar | 5.5kW |
The nominal capacity and maximum differential values represent different operating conditions. As vacuum or positive pressure increases, the actual airflow available from a side channel blower changes according to its performance curve and the resistance presented by the system.
For a replacement or new installation, the required airflow at the intended operating differential should therefore be considered rather than selecting a blower solely from its nominal free-air capacity.
SV8.400/2 Performance Characteristics
210 m³/h Airflow
Provides a useful volume of air for industrial machinery, process equipment and medium-capacity conveying or handling systems.
-400 mbar Vacuum
Strong relative vacuum capability for suction, handling and extraction duties requiring greater differential.
+450 mbar Pressure
Substantial positive-pressure performance for systems with higher resistance on the discharge side.
Two-Stage Compression
Successive regenerative stages enable the blower to develop greater differential than a comparable single-stage design.
5.5kW Motor
The 50 Hz specification covered on this page is driven by a 5.5kW electric motor.
Non-Contact Operation
The regenerative compression principle avoids rubbing vanes within the air chamber and requires no process-air lubrication.
Applications for the Becker SV8.400/2
With substantial differential available in both vacuum and pressure operation, the SV8.400/2 can be considered for a wide range of industrial applications. Its combination of 210 m³/h nominal airflow and two-stage compression is particularly relevant where the system requires more than simple low-pressure air movement.
› Pneumatic conveying
› Packaging machinery
› Printing and paper equipment
› Aeration and process air
› Industrial extraction
› General mechanical engineering
Suitability for a particular application depends upon the required airflow at the actual operating vacuum or pressure, together with factors such as duty cycle, inlet temperature, filtration and system resistance.
Replacing an Existing Becker SV8.400/2
Older Becker side channel blowers can remain installed in industrial machinery for many years, and the original equipment around them may still have a considerable remaining service life. When the blower eventually requires replacement, correctly establishing the original specification is important.
If you have an SV8.400/2 installed in existing machinery, send us photographs showing the complete blower, its Becker identification plate and the motor nameplate. Images of the inlet and discharge connections and the surrounding installation can also be useful.
Where possible, tell us whether the blower operates on vacuum or positive pressure and what process it performs. If the required airflow or working differential is known, include this information with your enquiry.
This allows a replacement to be considered against the actual duty rather than relying only upon the historic model designation.
Accessories and System Protection
The higher differential capability of the SV8.400/2 makes correct system design and protection particularly important. Excessive restriction can increase operating differential and temperature, while contamination entering the blower can reduce service life.
Inlet Filtration
Correct filtration helps prevent airborne contamination entering the blower without creating unnecessary inlet restriction.
Relief Protection
Suitable vacuum or pressure relief can protect the blower if system resistance rises beyond the intended operating condition.
Silencers
Inlet and discharge silencers can help reduce transmitted air noise in installations where acoustic levels are important.
Pipework & Connections
Appropriately sized pipework, flexible connectors and fittings help minimise avoidable restriction and pressure losses.
SV8.400/2 Service and Repair
The non-contact compression principle eliminates the rubbing carbon vanes associated with dry-running rotary vane pumps, but a side channel blower still contains bearings and other mechanical components that can wear during extended operation.
Changes in bearing noise, vibration or operating temperature can indicate developing mechanical problems. A reduction in machine performance does not necessarily mean the blower itself has failed, however. Blocked filtration, restricted pipework, altered valves or other changes in the system can also affect airflow and differential.
Vacuum Pumps UK can inspect Becker side channel blowers in our workshop, investigate reported faults and advise whether service, repair or replacement is appropriate.
Workshop Inspection
Assessment of existing Becker blowers and investigation of mechanical or performance problems.
Service & Repair
Repair options can be considered following inspection of the blower and its mechanical condition.
Becker Parts
Becker filters and replacement components can also be supplied through VacAir Superstore.
Becker SV8.400/2 FAQs
What is the capacity of the Becker SV8.400/2?
The nominal capacity of this 50 Hz configuration is 210 m³/h.
What maximum vacuum does the SV8.400/2 produce?
The listed maximum relative vacuum is -400 mbar.
What is the maximum positive pressure?
Maximum relative positive pressure is +450 mbar.
What motor is fitted to this SV8.400/2 specification?
The configuration covered here uses a 5.5kW motor at 50 Hz.
Is the SV8.400/2 a two-stage side channel blower?
Yes. The /2 designation identifies the two-stage configuration, allowing greater differential to be developed through successive regenerative compression stages.
Does the Becker SV8.400/2 require oil for compression?
No lubricating oil is required within the regenerative process-air chamber.
Can Vacuum Pumps UK help replace an older SV8.400/2?
Yes. Send us photographs of the blower, its Becker identification plate and motor nameplate together with any available information about the application and operating duty.
Becker SV8.400/2 Supply, Replacement or Repair
Talk to Vacuum Pumps UK about an existing SV8.400/2 or a new industrial vacuum or pressure application.
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