The S Series is a low-noise sickle-blade range covering 250-1040 mm with the 1Z, 7XL, 7Z, S38Z and S4Z models, available in PAG, PAGAS or ALU on Z-3 hubs.
The S Series is the low-noise family of the medium-diameter range. Its sickle blade profile, with serrated teeth on part of the trailing edge, is shaped to keep airflow and static pressure up at low rotational speed, which is why these impellers are usually found on cooling towers and heat exchangers as well as engine cooling packs.
Models run from the 1Z at 378-725 mm and the 7XL at 250-1040 mm through the 7Z, S38Z and S4Z, all on the Z-3 hub. Blade counts from 3 to 16 allow the same hub interface to be used across a range of duties, and the recyclable moulded blades keep service weight down.
| Model | Blade angle | Blade count | Diameter range | Blade materials | Hub | Product page |
|---|---|---|---|---|---|---|
| 1Z | Adjustable | 5-16 | 378-725 mm | PAG / PAGAS | Z-3 | 1Z axial fan |
| 2Z | Adjustable | 5-16 | 378-725 mm | PAG / PAGAS | Z-3 | Quoted on request |
| 2ZR | Adjustable | 3-16 | Quoted per project | PAG | Z-3 | Quoted on request |
| 4XR | Adjustable (angle disc) | 5-12 | 180-700 mm | ALU (ADC12) | H-6 with adjustable angle disc | 4XR Series fan |
| 7XL | Adjustable | 3-16 | 250-1040 mm | PAG / ALU | Z-3 | 7XL axial fan |
| 7Z | Adjustable | 5-16 | 560-922 mm | PAG / PAGAS / ALU | Z-3 / Z-5 / Z-7 | 7Z axial fan |
| S38Z | Adjustable | 3-16 | 500-943 mm | PAG / PAGAS | Z-3 | S38Z axial fan |
| S48Z | Adjustable | Quoted per project | Quoted per project | PAG / PAGAS | Z-3 | Quoted on request |
| S4Z | Adjustable | 5-16 | 530-922 mm | PAG / PAGAS | Z-3 | S4Z axial fan |
The 7Z model in the same family covers 560-922 mm with 5 to 16 blades and is listed on its own series page.
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 Z-3 | 0.74 kg / set | 190 mm |
| HUB Z-5 | 0.86 kg / set | 157 mm |
| HUB Z-7 | 0.86 kg / set | 194 mm |
| HUB Z-12 | 2.045 kg / set | 285 mm |
| HUB Z-16 | 3.64 kg / set | 385 mm |
This series is normally specified for the following duties:
Low-noise ventilation where blade-passing noise is regulated
Cooling towers and heat exchangers
High airflow and static pressure at low rotational speed
Dust and gas atmospheres where conductive blades are required
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.
Blades are balanced on a hand laser balancing machine before shipment, and the conductive PAGAS option is supplied for equipment working in explosive-risk atmospheres. That material choice addresses the working environment; machine-level certification remains with the equipment builder.
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. Where higher pressure rather than lower noise is the objective, the P Series adjustable blades use the same Z hub family and can often reuse the same shaft interface.
Related ranges: K Series big airflow fans | R4Z special blade fan | P Series adjustable fans | H Series small impellers.
The S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 S2Z is an adjustable-pitch axial fan blade in the S Series, covering 378-725 mm with 5-16 blades on the Z-3 hub for compact cooling and ventilation duties.
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 S2Z is an adjustable-pitch axial fan blade in the S Series, covering 378-725 mm with 5-16 blades on the Z-3 hub for compact cooling and ventilation duties.
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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 2ZR is an adjustable-pitch axial fan blade on the Z-3 hub in PAG, with 3 to 16 blades and the diameter fixed against the existing fan housing.
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 2ZR is an adjustable-pitch axial fan blade on the Z-3 hub in PAG, with 3 to 16 blades and the diameter fixed against the existing fan housing.
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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 S2Z is an adjustable-pitch axial fan blade in the S Series, covering 378-725 mm with 5-16 blades on the Z-3 hub for compact cooling and ventilation duties.
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 S2Z is an adjustable-pitch axial fan blade in the S Series, covering 378-725 mm with 5-16 blades on the Z-3 hub for compact cooling and ventilation duties.
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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S38Z is an adjustable-pitch axial fan blade built for high static pressure: 500-943 mm, 3 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 S4Z is an adjustable-pitch axial fan blade covering 530-922 mm with 5 to 16 blades on the Z-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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 7XL is an adjustable-pitch axial fan blade for a wide 250-1040 mm range with 3 to 16 blades on the Z-3 hub, in PAG or die-cast aluminium ADC12.
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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 1Z is an adjustable-pitch axial fan blade covering 378-725 mm with 5 to 16 blades on the Z-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 2ZR is an adjustable-pitch axial fan blade on the Z-3 hub in PAG, with 3 to 16 blades and the diameter fixed against the existing fan housing.
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 2ZR is an adjustable-pitch axial fan blade on the Z-3 hub in PAG, with 3 to 16 blades and the diameter fixed against the existing fan housing.
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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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 S48Z is an ultra-stiff axial fan blade for high-pressure mobile applications, with the diameter and blade count quoted per project and the Z-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.
