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Product description

Type PRM fans are portable radial fans dedicated to grain silos and floor dryers. They are characterised by a light and at the same time rigid construction. Resistant to atmospheric conditions. The welded, robust impellers are perfectly balanced, thus guaranteeing long and trouble-free operation of the motors without damaging the bearings. The fans are fitted with large wheels for easy movement over uneven surfaces. The circular discharge nozzle allows for easy connection to the installation. Often used universally in other industries besides agriculture.

The distinguishing features of the PRM range are:

  • Low energy consumption
  • High performance and pressure
  • Low noise
  • Mobility, fan equipped with its own large wheels and handle
  • Energy efficient IE3 motors
  • High build quality
  • Durable and robust construction

The design of the PRM type fans focuses on the full utilisation of the power of the installed motor. As a result, the fans achieve high flow rates. This results in unit lower electricity consumption per transmitted air volume. The modern impeller generates higher pressures, which means that it will pump large volumes of air through different types of grain. The motors can withstand precipitation. The fans are easy to transport between sites.

Standard execution:

  • power supply: 3~ 230/400V; 400/690V,
  • asynchronous motors, protection class: IP55, equipped with closed bearings, maintenance-free
  • rotors welded, powder coated,
  • hot-dip galvanised housings,
  • rD270 figure (air outlet positioned from the bottom, horizontal direction),
  • operating temperature: -20 to +40°C.

Optional executions:

  • power supply in range: 3~ 380 – 460V; 50 or 60Hz,
  • motors IP56, efficiency class IE4,
  • different shape (vertical discharge upwards or downwards),
  • material: stainless steel, grade 1.4301,
  • casing-mounted switch,
  • rain cover on inlet,
  • more powerful motors: 11 or 15kW,
  • operating temperatures: -20 to +55°C.






  • Bolted from structural steel sheet, with optimised spiral shape
  • Equipped with a bolted motor shelf
  • Equipped with castors and carrying handle
  • Corrosion protection by hot-dip galvanisation

Housing optional:

  • Material: stainless steel grade 1.4301
  • Material: aluminium
  • Painted in colour from RAL palette


  • Asynchronous 3 phase
  • Supply voltage: 3~ 230/400V; 400/690V
  • Efficiency class: IE3
  • Insulation class: F
  • Degree of protection: IP 55
  • Cast aluminium motor housing
  • Equipped with maintenance-free closed bearings

Motor optional execution:

  • Supply voltage: 440V, 460V
  • Supply frequency: 60Hz
  • Efficiency class: IE4
  • Motor insulation class: H
  • Degree of protection: IP 56
  • Winding temperature sensors


  • Made of steel, welded, closed construction, blades curved backwards
  • Protected against corrosion through painting
  • High efficiency in high-flow fields
  • Dynamically balanced to class G-6.3 in accordance with ISO 1940-1

Technical data


Motor power [kW]Speed [min -1]Maximum capacity [m3/h]Maximum total pressure [Pa]Outlet spigot Ø [mm]Weight [kg]
1PRM1/3,0-2/329158000210029066 Wybierz
2PRM1/4,0-2/429259500235029073 Wybierz
3PRM2/5,5-2/5,5294011400269029099 Wybierz
4PRM2/7,5-2/7,52940137503050290109 Wybierz




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NOTE: Factory outlet spigot ØD*(1) removed for transport.