Large axial fans are specified when the air volume, not the installation space, sets the diameter. Above roughly 1000 mm the impeller has to carry its own blade loads, so the W hub family runs from the 2 kg W-3 up to the 8.76 kg W-10 and blade sets are always treated as matched assemblies.
Two series cover this class: the W Series with the 1W, 5W, 6W, 9W and 11W blades for cooling towers, livestock houses and moving-air units, and the U Series with the U10W impeller from 1000 mm to 2200 mm for generator set cooling packages and very large heat exchangers.
| Series | Blade type | Blade count | Diameter range | Blade materials | Hub options | Product page |
|---|---|---|---|---|---|---|
| W Series (1W / 5W / 6W / 9W / 11W) | Adjustable | 6-12 | 560-2200 mm | PAG / PAGAS / ALU | W-3 to W-10 | W Series large industrial fans |
| U Series (U10W) | Adjustable | 6 / 7 / 8 / 10 | 1000-2200 mm | PAG / PAGAS | W-3 | U Series large fans |
Blade count is trimmed against the drive power and the required air volume, so one hub family covers a wide diameter span without changing the shaft interface.
Blade material is selected from the working temperature and from the atmosphere around the impeller:
| Material | Composition | Temperature range | Typical duty |
|---|---|---|---|
| PAG | PA6 with 30% glass fibre | -40 °C to 110 °C | Heavy-load cooling, anti-aging, general engine cooling |
| PAGAS | PA6 with 15% carbon fibre and 15% glass fibre (conductive) | -30 °C to 100 °C | Dust and gas atmospheres where static discharge must be avoided |
| ALU | Die-cast aluminium ADC12 | -40 °C to 150 °C, short-term 300 °C for 2 h | High-temperature and fire-resistance zones |
The conductive PAGAS option is supplied for equipment working in explosive-risk atmospheres such as dust or gas. It addresses the working environment of the blade; machine-level certification remains the responsibility of the equipment builder.
Blades are supplied with matched hub sets. The hub carries the blade loads and sets the shaft interface, so it is selected together with the blade count:
| Hub type | Weight | Hub diameter |
|---|---|---|
| HUB W-3 | 2 kg / set | 200 mm |
| HUB W-7 | 4.76 kg / set | 328 mm |
| HUB W-8 | 6.38 kg / set | 390 mm |
| HUB W-10 | 8.76 kg / set | 480 mm |
This series is normally specified for the following duties:
Cooling towers and large heat exchangers
Livestock ventilation
High performance moving-air units
Generator set cooling and off-highway engine cooling
When a fan is being specified or replaced, the following points are confirmed before a blade set is released. They are the same checks used for OEM programs and for retrofit projects.
Duty point: airflow and static pressure required at the working speed, taken from the cooling pack or ventilation requirement
Installation: available diameter, shroud clearance, mounting pattern and the shaft interface of the existing hub
Environment: maximum air temperature, dust or gas atmosphere, and whether static discharge has to be avoided
Drive: available power, belt or direct drive, and whether the fan has to reverse in service
Service: blade weight for handling during maintenance and spare-part availability across the machine fleet
Blade count, profile and material are then matched to those conditions in a fixed order: material first, then blade count, then hub family, with diameter confirmed against the shroud. Working in that sequence keeps the mechanical interface stable when the duty requirement changes later in the project, and it is why the same blade family can often stay in production while the cooling pack is revised.
Large impellers are assembled as matched blade and hub sets and balanced on a hand laser balancing machine before shipment, because imbalance grows with diameter and blade mass.
Blade count, blade profile, hub family and material can be customized for OEM programs, and existing fans can be reviewed when airflow, noise or durability has to be improved on a running machine. Below 1000 mm the medium P, S, 7Z, K and R4Z blades cover the same technical approach on the lighter Z hub family.
Related ranges: 9W large axial fan | 6W large axial fan | U10W large axial fan.
The 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 11W is an adjustable-pitch axial fan blade for high performance moving-air units, covering 560-2200 mm with 6 to 12 blades on the W-3 hub in moulded PAG or conductive PAGAS.
Adjustable pitch set at assembly and re-trimmable in service
560-2200 mm diameter range with 6-12 blades
PAG and conductive PAGAS blade options on the W-3 hub
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 11W is an adjustable-pitch axial fan blade for high performance moving-air units, covering 560-2200 mm with 6 to 12 blades on the W-3 hub in moulded PAG or conductive PAGAS.
Adjustable pitch set at assembly and re-trimmable in service
560-2200 mm diameter range with 6-12 blades
PAG and conductive PAGAS blade options on the W-3 hub
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 11W is an adjustable-pitch axial fan blade for high performance moving-air units, covering 560-2200 mm with 6 to 12 blades on the W-3 hub in moulded PAG or conductive PAGAS.
Adjustable pitch set at assembly and re-trimmable in service
560-2200 mm diameter range with 6-12 blades
PAG and conductive PAGAS blade options on the W-3 hub
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 11W is an adjustable-pitch axial fan blade for high performance moving-air units, covering 560-2200 mm with 6 to 12 blades on the W-3 hub in moulded PAG or conductive PAGAS.
Adjustable pitch set at assembly and re-trimmable in service
560-2200 mm diameter range with 6-12 blades
PAG and conductive PAGAS blade options on the W-3 hub
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 9W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-10 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 1W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-4 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 5W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on the W-3 hub, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe 6W is a large-diameter adjustable-pitch axial fan blade covering 560-2200 mm with 6 to 12 blades on W-3 or W-6 hubs, in PAG, conductive PAGAS or die-cast aluminium.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
The U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
Inquire NowThe U10W is a large adjustable-pitch axial fan blade for 1000-2200 mm fans with 6, 7, 8 or 10 blades on the W-3 hub, in PAG or conductive PAGAS.
PAGAFR material option: PA6 reinforced with glass fiber and flame-retardant additives. Compared with PAG, PAGAFR includes flame-retardant additives for applications requiring flame-retardant properties.
