Airfoil7W product codes and part numbers
Left/right blade codes, part numbers and complete impeller codes of the 7W profile. Request a quote from each code’s own page.
About 7W
7W is a wide airfoil in the W family with higher pressure capacity, prominent in genset and tunnel fans.
Airfoil profiles have a wing-like cross-section and deliver high efficiency across a wide operating range. From 2H to 10G, this family covers the most widely used Multi-Wing profiles, from small motor cooling fans to giant cooling tower impellers.
The W series is designed for large-diameter impellers. The 5W, 6W, 7W, 9W2, 1W, 2W, 3W, 8W and TR11W profiles are mounted with W retaining plates and are used in cooling towers, large dry coolers, genset radiators and tunnel ventilation fans.
7W can be produced at diameters from 499 mm to 2,141 mm. Since modular profiles are cut in 1 mm steps, simply state the diameter that matches your existing shroud or venturi ring.
Technical specifications
| Product group | Modular Fan Impellers |
|---|---|
| Profile family | Airfoil |
| Hub series | W |
| Diameter range | 499–2,141 mm (19.6–84.3 inch) |
| Rotation | Left (L) and right (R) |
| Pitch angle | Adjustable — set to the duty point |
| Material options | PPG, PAG, PAGV1, PAGAS, PAG6-C, AL, AL 400C (depending on profile and size) |
| Add-on | Winglet, EPS, viscous clutch |
| Applications | Generator (genset) cooling, Cooling towers, Tunnel ventilation and smoke extraction, Industrial process cooling |
Where is it used?
- Generator (genset) coolingKeeps generator engines at safe temperatures with strong pressure and airflow through the radiator.
- Cooling towersA durable choice for open and closed circuit cooling towers working in high humidity.
- Tunnel ventilation and smoke extractionWith high-temperature materials it serves tunnel, car park and smoke extraction fans.
- Industrial process coolingServes cooling packages for transformers, compressors and process equipment.
What do we need for a quote?
- Diameter of the current fan (mm)
- Number of blades
- Profile code (e.g. 4Z, 6W, PMAX4)
- Rotation (L / R)
- Pitch angle
- Material (PPG, PAG, AL…)
- Hub / shaft bore size
- Motor speed (rpm)
You don’t need to know everything. Enter what you know and we will complete the rest together.
How to read the product code
630Diameter (mm)/5Blades-5Sockets/30Pitch (°)/PAGMaterial/7WLProfile + hand/28Bore (mm)/8Key/62Hub/AMounting
This is an example label code for an impeller with the 7W profile. Simply write the full code from your label in the quote form. See our selection guide for details.
Frequently asked questions
What diameters is the Multi-Wing 7W Fan Blade available in?
The diameter range for 7W is 499–2,141 mm. State the size you need in the quote form.
Is 7W available in left- and right-hand rotation?
Yes. Most modular profiles are available in both left-hand (L) and right-hand (R) versions, so the right direction can be chosen for pusher or puller use.
How do I get a price for 7W?
Add the product to your quote list and send your contact details. Our quote with itemised prices, shipping and lead time is sent to your email address.
What is the lead time?
Items in stock are usually shipped the same day. Lead time for non-stock items is stated in your quote.
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