The Hydraulic Reversible Fan is a 450-1250 mm variable-pitch reversible fan for tractors, harvesters and earthmoving machinery, with hydraulic blade-pitch reversal and six or eight blades.
The Hydraulic Reversible Fan covers the 450-1250 mm range with six or eight blades and changes blade pitch hydraulically. It is the heavier of the two reversing routes and is usually specified for tractors, harvesters, combines, sprayers, handlers, excavators, wheel loaders, dozers and skid steers where the cooling pack sits behind layers of screens and coolers.
Hydraulic reversal gives the operator a continuous pitch range rather than a fixed flip, so the same fan can be trimmed for the duty point and then reversed to clean the radiator when the core starts to block. That combination keeps both temperature and cleaning under control on machines that run long shifts in dry, dusty conditions.
| Model | Blade angle | Blade count | Diameter range | Blade materials | Product page |
|---|---|---|---|---|---|
| Hydraulic Reversible Fan | Reversible (hydraulic) | 6 / 8 | 450-1250 mm | PAG / ALU | Hydraulic Reversible Fan |
The hydraulic actuator drives the blade angle from +35° to -35°, so pitch trimming and reverse cleaning are handled by the same mechanism.
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 |
| ALU | Die-cast aluminium ADC12 | -40 °C to 150 °C, short-term 300 °C for 2 h | High-temperature and fire-resistance zones |
Two reversing routes are available across the reversible fan range. The table below compares them so the right actuation can be selected for a machine platform:
| Route | Pitch travel | Actuation | Typical use |
|---|---|---|---|
| Pneumatic reversal | +35° to +90° and -90° to -35° | Pneumatic actuator, one-touch control | Light blade sets and narrow engine bays |
| Hydraulic reversal | +35° to -35° (continuous trimming) | Hydraulic circuit, shared with machine hydraulics | Heavy mobile machinery with stacked cooling packs |
This series is normally specified for the following duties:
Tractors and harvesters with blocked radiator cores
Combines and field sprayers working in chaff and dust
Excavators, wheel loaders, dozers and skid steers
Telehandlers and machines with stacked cooling packs
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 and hubs are assembled as a matched set and balanced on a hand laser balancing machine before shipment, so a replacement impeller behaves like the original. The reversing mechanism is covered by a granted Chinese invention patent (CN 118309603 B, variable-pitch reversible fan) held by the company's manufacturing entity.
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 the machine already runs hydraulics for other functions, the hydraulic fan can share that circuit; the pneumatic version is used when a lighter, self-contained actuation is preferred.
Related ranges: Pneumatic Reversible Fan | H Series impellers | P Series axial fan | S Series fans.
The hydraulic reversible fan turns its blades hydraulically so the airflow can be reversed on demand, clearing dust and chaff from a radiator or cooler core while the machine keeps working.
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 hydraulic reversible fan turns its blades hydraulically so the airflow can be reversed on demand, clearing dust and chaff from a radiator or cooler core while the machine keeps working.
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 hydraulic reversible fan turns its blades hydraulically so the airflow can be reversed on demand, clearing dust and chaff from a radiator or cooler core while the machine keeps working.
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 hydraulic reversible fan turns its blades hydraulically so the airflow can be reversed on demand, clearing dust and chaff from a radiator or cooler core while the machine keeps working.
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.
