Fig. 01External Rotor200–900mm220/230 · 380/400VCold Room Condenser Fan Manufacturer
Refrigeration condenser fans built on external rotor motors, designed for cold room condensers, walk-in coolers and HVAC systems. Cold rolled steel impeller welded directly to the rotor hub, so you won't get the shaft vibration problems that come with separate motor designs. Thirteen frame sizes from 200mm to 900mm. Single-phase 220/230V covers most cold room and commercial refrigeration installs. Three-phase 380/400V for larger condensing units. CE marked, factory direct from ISO 9001 production.
Most axial fan failures in cold rooms come down to three things: vibration, corrosion and poor fit. An external rotor fan is designed around all three.
Standard axial fans use a separate motor with a shaft connecting to the blade hub. That shaft introduces a vibration point, adds depth to the fan assembly and gives you one more thing that can fail. In a cold storage warehouse running 24 hours a day, that adds up fast. External rotor design wraps the rotor directly around the stator. The blades mount straight onto the rotor hub. Nothing in between.
Cold room condensers cycle hard. The unit might run at -20°C through the night and warm up to +10°C during a defrost cycle. Do that 3 to 4 times a day for a few years and cheaper materials start cracking at the joints. These cold storage fan motors use die-cast aluminium alloy frames that handle the thermal expansion and contraction without weakening. The black anti-corrosion surface treatment takes care of the condensation you always get when temperatures swing. Rated from -30°C to +60°C, isn't seasonal, isn't conditional.
Most cold room and HVAC condenser units don't have much space behind the coil face. A shaft-driven fan sticks out further because the motor sits separately behind the blade. External rotor design keeps everything in the hub, so the overall fan depth is shorter. Our 300mm to 450mm models are a common fit for European AHU and condenser frames; send the frame drawing and we'll confirm. If you've been dealing with clearance issues on replacements, this solves it.
Thirteen frame sizes, 200mm to 900mm. If you're sourcing a cold room fan in the 300mm to 450mm range, the E Series covers it on single-phase 220/230V. Those sizes handle most standard condenser coil faces for walk-in coolers and small cold storage units. Need three-phase? The D Series refrigeration condenser fan models run on 380/400V from 200mm all the way to 900mm, no capacitor needed. Pole count controls the speed: 2-pole for high airflow, 4-pole for standard cold room condenser duty, 6-pole at 900 to 1,100 RPM for quiet evaporator runs.
Cold room fan motor protection: IP44, Class F insulation. Operating range -30°C to +60°C — rated for cold storage starting conditions. Suitable for cold room condensers, walk-in cooler evaporators and AHU units. Certification: CE.
| Model | Poles | Cap (μF) | RPM (50/60Hz) | Max Airflow m³/h (50/60Hz) | Power W (50/60Hz) | Current A (50/60Hz) | Noise dB(A) |
|---|---|---|---|---|---|---|---|
| 200mm | |||||||
| F2E-200S-5 | 2P | 2 | 2,300 / 2,600 | 880 / 980 | 65 / 80 | 0.30 / 0.34 | 53 / 55 |
| F4E-200S-5 | 4P | 1 | 1,400 / 1,680 | 425 / 510 | 27 / 30 | 0.12 / 0.13 | 43 / 45 |
| 250mm | |||||||
| F2E-250S-5 | 2P | 3 | 2,480 / 2,600 | 1,350 / 1,500 | 100 / 130 | 0.45 / 0.59 | 65 / 67 |
| F4E-250S-5 | 4P | 2 | 1,400 / 1,650 | 860 / 1,000 | 50 / 65 | 0.25 / 0.30 | 53 / 54 |
| 300mm | |||||||
| F2E-300S-5 | 2P | 4 | 2,400 / 2,600 | 1,900 / 2,050 | 125 / 155 | 0.55 / 0.70 | 58 / 60 |
| F4E-300S-5 | 4P | 3 | 1,350 / 1,600 | 1,650 / 1,750 | 80 / 115 | 0.40 / 0.51 | 54 / 55 |
| 350mm | |||||||
| F4E-350S-5 | 4P | 3 | 1,380 / 1,550 | 2,700 / 3,000 | 135 / 190 | 0.60 / 0.83 | 58 / 60 |
| F6E-350S-5 | 6P | 3 | 950 / 1,100 | 1,560 / 1,800 | 80 / 83 | 0.40 / 0.37 | 53 / 54 |
| 400mm | |||||||
| F4E-400S-5 | 4P | 6 | 1,350 / 1,580 | 3,500 / 3,900 | 180 / 260 | 0.87 / 1.22 | 60 / 62 |
| F6E-400S-5 | 6P | 4 | 950 / 1,100 | 2,600 / 3,000 | 110 / 120 | 0.50 / 0.54 | 55 / 57 |
| 450mm | |||||||
| F4E-450S-5 | 4P | 7 | 1,350 / 1,600 | 4,500 / 4,800 | 230 / 280 | 1.15 / 1.20 | 62 / 64 |
| F6E-450S-5 | 6P | 6 | 920 / 1,100 | 2,900 / 3,400 | 135 / 170 | 0.65 / 0.75 | 56 / 58 |
| 500mm | |||||||
| F4E-500S-5 | 4P | 10 | 1,320 / 1,450 | 6,500 / 6,800 | 420 / 500 | 1.85 / 2.30 | 69 / 70 |
| F6E-500S-5 | 6P | 6 | 900 / 1,020 | 4,320 / 4,800 | 220 / 250 | 1.10 / 1.35 | 65 / 66 |
| 550mm | |||||||
| F4E-550S-5 | 4P | 12 | 1,320 / 1,450 | 7,800 / 8,500 | 550 / 725 | 2.50 / 3.30 | 73 / 74 |
| F6E-550S-5 | 6P | 6 | 900 / 1,060 | 6,500 / 7,000 | 280 / 465 | 1.20 / 2.15 | 62 / 66 |
| 600mm | |||||||
| F4E-600S-5 | 4P | 16 | 1,380 / 1,640 | 9,500 / 11,000 | 800 / 920 | 3.60 / 4.20 | 73 / 75 |
| F6E-600S-5 | 6P | 12 | 910 / 1,080 | 8,500 / 9,700 | 500 / 640 | 2.40 / 2.94 | 69 / 70 |
| 630mm | |||||||
| F4E-630S-5 | 4P | 16 | 1,360 / 1,500 | 10,800 / 11,000 | 850 / 1,150 | 3.70 / 5.34 | 74 / 75 |
| F6E-630S-5 | 6P | 12 | 900 / 1,050 | 9,300 / 10,500 | 520 / 705 | 2.50 / 3.25 | 67 / 71 |
50Hz values listed first, 60Hz second. Airflow is free-air at zero static pressure. Contact us for capacitor values, dimensional drawings and data sheets.
| Model | Poles | Cap (μF) | RPM (50/60Hz) | Max Airflow m³/h (50/60Hz) | Power W (50/60Hz) | Current A (50/60Hz) | Noise dB(A) |
|---|---|---|---|---|---|---|---|
| 200mm | |||||||
| F2D-200S-5 | 2P | / | 2,300 / 2,600 | 880 / 980 | 65 / 80 | 0.21 / 0.24 | 53 / 55 |
| F4D-200S-5 | 4P | / | 1,400 / 1,680 | 425 / 510 | 25 / 28 | 0.06 / 0.07 | 43 / 45 |
| 250mm | |||||||
| F2D-250S-5 | 2P | / | 2,450 / 2,550 | 1,350 / 1,500 | 90 / 116 | 0.18 / 0.20 | 65 / 67 |
| F4D-250S-5 | 4P | / | 1,400 / 1,650 | 860 / 1,000 | 50 / 60 | 0.17 / 0.18 | 53 / 54 |
| 300mm | |||||||
| F2D-300S-5 | 2P | / | 2,500 / 2,650 | 1,900 / 2,050 | 115 / 150 | 0.25 / 0.26 | 58 / 60 |
| F4D-300S-5 | 4P | / | 1,380 / 1,640 | 1,650 / 1,750 | 80 / 120 | 0.25 / 0.26 | 54 / 55 |
| 350mm | |||||||
| F4D-350S-5 | 4P | / | 1,360 / 1,500 | 2,700 / 3,000 | 135 / 170 | 0.38 / 0.39 | 58 / 60 |
| F6D-350S-5 | 6P | / | 920 / 1,050 | 1,560 / 1,800 | 70 / 80 | 0.22 / 0.20 | 53 / 54 |
| 400mm | |||||||
| F4D-400S-5 | 4P | / | 1,370 / 1,620 | 3,500 / 3,900 | 180 / 245 | 0.50 / 0.47 | 60 / 62 |
| F6D-400S-5 | 6P | / | 950 / 1,100 | 2,600 / 3,000 | 110 / 135 | 0.31 / 0.30 | 55 / 57 |
| 450mm | |||||||
| F4D-450S-5 | 4P | / | 1,350 / 1,600 | 4,500 / 4,800 | 230 / 280 | 0.60 / 0.80 | 62 / 64 |
| F6D-450S-5 | 6P | / | 910 / 1,030 | 2,900 / 3,400 | 135 / 140 | 0.31 / 0.34 | 56 / 58 |
| 500mm | |||||||
| F4D-500S-5 | 4P | / | 1,350 / 1,500 | 6,500 / 6,800 | 420 / 500 | 0.90 / 1.00 | 69 / 70 |
| F6D-500S-5 | 6P | / | 900 / 1,100 | 4,320 / 4,800 | 220 / 250 | 0.60 / 0.65 | 65 / 66 |
| 550mm | |||||||
| F4D-550S-5 | 4P | / | 1,330 / 1,540 | 7,800 / 8,500 | 550 / 725 | 1.15 / 1.40 | 73 / 74 |
| F6D-550S-5 | 6P | / | 910 / 1,090 | 6,500 / 7,000 | 320 / 440 | 0.95 / 1.00 | 62 / 66 |
| 600mm | |||||||
| F4D-600S-5 | 4P | / | 1,350 / 1,550 | 9,500 / 11,000 | 800 / 1,000 | 1.70 / 2.00 | 73 / 75 |
| F6D-600S-5 | 6P | / | 920 / 1,070 | 8,500 / 9,700 | 500 / 575 | 1.50 / 1.55 | 69 / 70 |
| 630mm | |||||||
| F4D-630S-5 | 4P | / | 1,350 / 1,540 | 10,800 / 11,000 | 850 / 1,010 | 1.80 / 2.00 | 74 / 75 |
| F6D-630S-5 | 6P | / | 900 / 1,060 | 9,300 / 10,500 | 550 / 740 | 1.40 / 1.56 | 67 / 71 |
| 710mm · 50Hz only · two blade pitch settings shown | |||||||
| F6D-710S-7 | 6P | / | 900 · 600 | 17,000 · 12,500 | 1,100 · 750 | 2.00 · 1.40 | 75 · 68 |
| F8D-710S-7 | 8P | / | 700 · 600 | 12,000 · 10,000 | 700 · 450 | 1.50 · 0.90 | 67 · 65 |
| 800mm · 50Hz only · two blade pitch settings shown | |||||||
| F8D-800S-7 | 8P | / | 900 · 700 | 25,000 · 19,000 | 1,850 · 1,250 | 3.70 · 2.30 | 80 · 77 |
| 900mm · 50Hz only | |||||||
| F6D-900S | 6P | / | 900 | 22,000 | 1,800 | 3.62 | 77 |
50Hz / 60Hz values separated by slash. 710mm, 800mm and 900mm are 50Hz only. For 710mm and 800mm, the two values shown are high and low blade pitch settings. No capacitor required for three-phase models. Contact us for wiring diagrams and dimensional drawings.
Common across all models: Cold rolled steel impeller welded to rotor hub · IP44 · Class F insulation · -30°C to +60°C operating range · CE marked. 500-5T high-airflow variant also available for the 500mm frame. Dimensional drawings, wiring diagrams and data sheets available on request.
IP44 rated, thirteen sizes, one motor platform. Cold room condensers, HVAC condensing units, AHU fan sections, industrial exhaust stacks. The right size is in this range.
The 300mm to 630mm cold room condenser fan range covers most standard coil face openings. Walk-in cooler fan replacements and cold storage condenser motors in this bracket are rated for a -30°C to +60°C operating range. IP44 protects the motor against splashing water, and the die-cast aluminium alloy frame with its black anti-corrosion coating handles the constant condensation. For evaporator fan motor applications where noise matters in an enclosed cold room, 6-pole models run at 900 to 1,100 RPM and keep it quiet.
Rooftop and outdoor condensing units see sun, rain and wide temperature swings. The condensing unit fan range from 350mm to 900mm covers standard HVAC condenser frame openings in commercial plant. Three-phase condenser fan motor 380/400V models are the standard fit where single-phase isn't an option on site. IP44 is standard across the range; for fully exposed installs, confirm the protection rating with us. Send the mounting or frame drawing and we'll confirm the fit.
External rotor design is the standard AHU fan choice because the short axial depth fits inside standard housings without reworking the frame. The AHU axial fan range from 300mm to 630mm is what we currently supply to air handling unit manufacturers in Europe and South America. If you're sourcing AHU fan motors as an OEM and need consistent lead times, this is the range. Contact us for fan section drawings.
Industrial process ventilation runs hotter and harder than commercial refrigeration. The +60°C upper rating means these industrial axial fans handle drying oven exhaust and warm process air up to +60°C without thermal protection trips mid-cycle. Three-phase axial fan 380V models from 250mm to 900mm cover heavy-load exhaust stacks and forced-air dryers. An axial fan for drying oven duty needs to move volume consistently at elevated temperatures. These do.
Same footprint, different drive type? Two options worth knowing about.
Three things determine what size fan your cold room needs: the frame opening, the supply voltage and the pole count. Get any one wrong and the fan either won't fit, won't start or won't perform. Here's how to work through each one.
Measure the circular opening the fan sits in on the condenser or evaporator coil. That measurement is your frame size. The overall unit dimensions don't matter here.
Wrong voltage is the most common ordering mistake in refrigeration condenser fan selection. The motor is wound for a specific voltage at the factory. It cannot be changed after manufacture.
Pole count is how you choose condenser fan motor speed without changing the frame size. Higher pole count equals lower RPM, lower noise and slightly less airflow.
Sourcing direct from an axial fan OEM in China removes the distributor margin entirely. We manufacture and ship refrigeration condenser fan OEM orders to customers in Europe and South America. You won't be talking to a trading company.
Cold room fan bulk orders go direct from our ISO 9001 production floor. No distributor, no markup. Pricing scales with volume. Send your quantity and we'll confirm within 1 business day.
CE marked. ISO 9001 production. Test certificates, inspection reports and compliance documentation available on request. Standard for European and South American OEM customers.
Samples ship in 3–7 days standard or 5–10 days for a custom specification; production takes 15–20 days standard or 18–25 days for a custom specification. Custom voltage, blade pitch or mounting flange configurations take longer. Don't place a custom OEM order without confirming the lead time first.
Blade pitch, voltage (220/230V or 380/400V), mounting flanges, lead wire length and connector type. Minimum order quantities apply for non-standard configurations. Send your specs and we'll confirm lead time and pricing.
Production and testing
Currently supplying AHU manufacturers in Europe and South America.
Send your frame size, voltage, pole count and quantity. We respond within 1 business day.
Five questions we get on almost every cold room and refrigeration condenser enquiry. Short answers, no filler.
Cold room fan sizing starts with the circular opening on the condenser coil face, not the overall unit footprint. Measure that and you have your frame size. For most walk-in cold rooms, the cold room condenser fan size lands between 300mm and 450mm. Larger cold storage condensers with bigger coil faces go up to 630mm. Replacing an existing fan? The size is on the unit nameplate. No nameplate, measure the coil face opening directly and send us that number.
Yes, -30°C is within the rated operating range of -30°C to +60°C for the standard models. Cold room fan low temperature operation was part of the design spec, not a feature added later. Operating temperature is not the same as restarting after a shutdown, though: where moisture is present, frost or ice can form on the impeller while the fan is stopped, so check that the impeller turns freely before restarting. If your cold room regularly drops below -30°C, contact us before ordering. Standard models don't cover that range, and a low-temperature bearing configuration can be reviewed for the project.
Two options. Cold room fan 230V single-phase covers walk-in coolers, small cold rooms and light commercial refrigeration installs. For larger cold storage condensing units and commercial HVAC plant, you want cold room fan 380V three-phase. Worth knowing: three phase condenser fan models don't need a run capacitor, but single-phase models do, and the correct value is in the spec table above. Confirm your site supply before ordering because the motor is wound at the factory for a specific voltage and it can't be changed afterwards.
For most cold room fan IP rating requirements, IP44 is the correct specification. The IP44 cold room motor rating blocks solid particles above 1mm and protects against water splashing from any direction, which covers splashes and dripping condensate. For outdoor units exposed to driving rain, or where moisture can condense inside the motor during long standstill, tell us the installation conditions and we'll confirm whether IP44 is enough or a higher rating is needed. Direct pressure washing is a different story. That calls for IP55 or higher, so contact us before ordering if that's your application.
For standard catalogue models, cold room fan OEM orders start at 10 units. The refrigeration fan minimum order for non-standard configurations, meaning custom voltage, blade pitch or connector type, is 50 units, and private-label orders also start at 50 units. If you're sourcing for AHU production lines or cold storage installation work, send us your frame sizes and quantities and we'll come back within 1 business day with pricing and lead time.
Fan Range
