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Brand: Elektror
Elektror RD Medium-Pressure Radial Blower, up to 9,600 Pa
Description
Medium-pressure radial blowers in cast aluminium
The Elektror RD series are medium-pressure radial blowers with a cast aluminium housing and a directly driven double-wall impeller. The series has 18 sizes with air flow rates from 5.9 to 150 m³/min and pressures from 1,250 to 9,600 Pa, so one family covers jobs from cooling a machine part to supplying combustion air. Each size is built with a three-phase motor (RD) or a single-phase AC motor (RE) as a ready-to-install unit.
Radial blowers of this type are used to convey medium air volumes against higher system resistances: filters, long ducts, burners and drying plants. The catalogue lists extraction of gases and vapours, cooling of apparatus, ventilation, air supply for gas, oil and coal-fired systems and drying installations as typical uses.
Technical specifications
| Parameter | Specification |
|---|---|
| Construction | Aluminium-cast housing; closed double-wall impeller of sheet aluminium or sheet steel; dynamically balanced; protective grille on the intake as standard |
| Drive | Directly driven asynchronous squirrel-cage motor, 2-pole, IP 54, thermal class F, EN 60034-1 |
| Standard supply | 50 Hz: 230/400 V delta/star or 400 V delta (three-phase) and 230 V (single-phase); 60 Hz versions on request; +/-10 % voltage tolerance |
| Ambient temperature (motor cooling air) | -20 to +60 °C (-20 to +40 °C for multi-voltage FU/FUK motors, Ex motors and UL-approved motors) |
| Conveyed medium temperature | -20 to +80 °C; up to 180 °C with a temperature barrier between blower and motor |
| Bearings | Closed, grease-packed ball bearings, minimum service life 22,000 h with horizontal shaft |
| Speed control | All standard blowers can be run on a frequency converter; motors have PTC sensors and reinforced winding insulation; speed range 5-50 Hz on 50 Hz versions |
| Options | IP 55, tropical and moisture-protection insulation, PTFE radial shaft seal, impeller in 1.4301, coating, ATEX versions to 2014/34/EU (zones 1, 2 and 22, T3 or higher) on request |
Sizes in the RD series
Figures are the maximum flow and pressure listed in the manufacturer product overview. The type code is R, then D for three-phase or E for single-phase AC motor, then the size number; for example RD 5 is the three-phase size 5 and RE 5 its single-phase equivalent.
| Model | Max. flow rate (m³/min) | Max. pressure (Pa) |
|---|---|---|
| RD 10 | 5.9 | 1,320 |
| RD 14 | 11.5 | 1,250 |
| RD 16 | 16.3 | 1,590 |
| RD 2, RE 2 | 12.0 | 2,250 |
| RD 4 | 14.2 | 2,590 |
| RD 5, RE 5 | 18.3 | 2,360 |
| RD 6, RE 6 | 21.5 | 2,700 |
| RD 62 | 27.5 | 3,300 |
| RD 64 | 35.0 | 3,400 |
| RD 65 | 40.0 | 3,250 |
| RD 7 | 51.0 | 3,800 |
| RD 72 | 44.0 | 3,600 |
| RD 74 | 65.0 | 3,600 |
| RD 8 | 55.0 | 5,700 |
| RD 82 | 88.0 | 5,700 |
| RD 84 | 90.0 | 6,900 |
| RD 92 | 150.0 | 8,100 |
| RD 94 | 142.0 | 9,600 |
Selection, installation and what to confirm before ordering
The catalogue asks for the following data when ordering: blower type, volumetric flow rate, required total or static pressure difference, voltage, frequency and phase, ambient and conveyed medium temperature, medium density, type of medium, housing position and any accessories. The performance curves are measured to EN ISO 5801 at an air density of 1.2 kg/m3; for hot or thin air, pressure and power change in proportion to density. Speed changes follow the fan laws: flow varies with speed, pressure with its square and power with its cube.
Install the blower protected from the weather, level and free from vibration, and use star-delta starting above 3.5 kW. The catalogue states that conveying solids is not permitted for the standard closed impeller and that explosive mixtures may not be conveyed by the standard version; the ATEX version is a separate configuration. Provide a filter on the intake if the air carries particles. See also the ebm-papst R1G225-AF11-52 DC fan and the HVAC & Combustion category.
Documents and quotation
The Elektror RD medium-pressure blower catalogue (bilingual German/English, edition 03.05.2023) is attached to this page and is the manufacturer’s own document, not a Seven Star summary. It contains dimension drawings, characteristic curves and motor data for every size, accessories and the frequency converter range.
Quote the blower type, flow, pressure and electrical supply. Seven Star LLC, an independent supplier in Muscat, quotes the RD series against your application data; send the enclosure size, ambient temperature, supply voltage and quantity so the correct variant and article number can be confirmed before an offer is issued.
Datasheets & Documents
- Brochure Elektror RD medium-pressure blowers catalogue (manufacturer PDF) Download
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About brand
Elektror is a German manufacturer of industrial fans and side channel blowers. Elektror airsystems was founded in 1924, has its headquarters in Ostfildern and produces at Waghäusel in Germany and Chorzów in Poland. The company builds radial and axial industrial fans and side channel blowers, and supplies accessories and customised ventilation solutions.
Elektror blower range
The centrifugal range includes the RD medium-pressure and HRD high-pressure blowers in cast aluminium, the ND low-pressure series, the A-HP high-pressure blowers for frequency-converter operation, and steel and stainless steel S-series blowers such as the S-LP and S-HE. Side channel blowers are offered as SD, 1SD and 2SD, and many centrifugal sizes are available as ATEX versions to directive 2014/34/EU on request.
Requesting a quote for blowers
Send the blower type, the required volumetric flow and total or static pressure, the voltage and frequency, the medium with its temperature and density, and the housing position. The manufacturer's catalogues use the same ordering data, so the exact duty point lets the right size be confirmed before an offer is issued.
Related products
Frequently Asked Questions
What does the Elektror RD series cover?
Eighteen sizes of medium-pressure radial blowers with cast aluminium housing, from 5.9 to 150 m³/min and up to 9,600 Pa.
What is the difference between RD and RE?
RD uses a three-phase motor and RE uses a single-phase AC motor.
What temperatures are permitted?
Motor cooling air from -20 to +60 °C and conveyed medium from -20 to +80 °C, up to 180 °C with a temperature barrier.
Can the RD be speed controlled?
Yes. All standard blowers can run on a frequency converter; the motors have PTC sensors and reinforced insulation.
Are ATEX versions available?
The catalogue states that numerous sizes are available to ATEX 2014/34/EU for zones 1, 2 and 22, on request.
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