AirfoilMulti-Wing 4H Fan Blade
4H is an H series sickle with a wider form than 1H, giving more airflow at the same low noise.
Diameter range281–702 mm
Hub seriesH
RotationL / R
4H product codes and part numbers
Left/right blade codes, part numbers and complete impeller codes of the 4H profile. Request a quote from each code’s own page.
About 4H
4H is an H series sickle with a wider form than 1H, giving more airflow at the same low noise.
Sickle profiles feature a blade tip swept in the direction of rotation. This shape reduces tip vortices and gives noticeably quieter operation at the same airflow. They are ideal for condensers near residential areas and projects with noise limits.
The H series is Multi-Wing’s compact hub family. The 2H, 3H, 1H, 4H and 6H profiles are mounted with H retaining plates and cover roughly 222–742 mm. It is the series most often found on electric motor cooling, hydraulic oil cooler and compact condenser fans.
4H can be produced at diameters from 281 mm to 702 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 | Sickle |
| Hub series | H |
| Diameter range | 281–702 mm (11.1–27.6 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 | Condensers and evaporators, Cold rooms and cold chain, Hydraulic oil coolers |
Where is it used?
- Condensers and evaporatorsMoves air evenly across condenser and evaporator coils in refrigeration circuits.
- Cold rooms and cold chainWorks reliably at low temperatures in cold stores and blast freezing tunnels.
- Hydraulic oil coolersKeeps a steady airflow across oil cooler cores in hydraulic power units.
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/4HLProfile + hand/28Bore (mm)/8Key/62Hub/AMounting
This is an example label code for an impeller with the 4H 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 4H Fan Blade available in?
The diameter range for 4H is 281–702 mm. State the size you need in the quote form.
Is 4H 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 4H?
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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