WISTRO Elektro-Mechanik Industrial Motor Cooling Fans

Technical selection and engineering overview of WISTRO Elektro-Mechanik external motor cooling units, forced ventilation fans and built-in industrial axial blowers for machinery builders.

WISTRO ILI / IL Forced Cooling Fan Units

WISTRO forced cooling fan units of the ILI and IL series are engineered for forced ventilation of asynchronous and direct current motors in frame sizes from 63 to 560. The compact steel housing maintains high airflow. Replaceable parts include bearings and impellers.

Motor frame sizes: standard IEC Bg 63 to Bg 560
Ingress protection class: consistent IP66 rating
Multi-voltage range: single 230V to three-phase 575V
Replaceable assemblies: impellers, bearings and seals

WISTRO FLAI Compact Forced Ventilation Units

WISTRO FLAI compact cooling fan modules are designed for variable speed drives with tight axial installation space. The galvanized steel housing endures continuous vibration. Factory spare assemblies include protective grilles, terminals and flanges.

Housing materials: galvanized sheet and marine alloy
Compact footprint: minimized overall axial length
Acoustic profile: flow-optimized low noise design
Field spares: protective grilles, flanges and blocks

WISTRO FLAIR Radial Intake Cooling Units

The specialized WISTRO FLAIR series incorporates radial air intake paths for electric drives installed in restricted spaces. The aluminum alloy diffuser directs airflow across stator cooling fins. Service spares encompass sealing gaskets, screws and leads.

Intake configuration: radial air aspiration path
Target application: restricted bulkhead installations
Sealing rating: fully protected IP66 cable glands
Service components: sealing gaskets, screws and leads

WISTRO External Fan Units for Servo Motors

WISTRO external fan units are engineered for dynamic servo motors starting from frame size 63 and above. The rugged aluminum alloy housing endures dynamic acceleration. Multi-voltage drives maintain airflow at low speeds. Replacement parts include rotors and plugs.

Compatibility: servo motor frames from size 63 up
Vibration strength: designed for dynamic acceleration
Cooling continuity: steady airflow at low motor speeds
Exchange parts: internal fan motors, rotors and plugs

WISTRO Built-in Industrial Axial Fans

WISTRO built-in industrial axial fans with diameters up to 300 mm are developed for enclosure integration and heat exchangers. Aerodynamic blades deliver high volume air delivery. Universal multi-voltage input simplifies wiring. Spare parts include diffusers and bushings.

Fan diameter range: standard industrial sizes to 300 mm
Electrical supply: universal multi-voltage electrical input
Integration scope: control cabinets and heat exchangers
Wear components: protective cowls, diffusers and bushings

WISTRO ATEX and IECEx Explosion-Proof Fan Units

Explosion-proof WISTRO forced ventilation units are qualified for hazardous zones compliant with ATEX and IECEx specifications. Built for cold environments down to -40 °C with IP66 ingress protection. Spares include terminal enclosures, brackets and flanges.

Hazardous standards: compliant with IECEx and ATEX rules
Thermal envelope: low temperature resilience down to -40 °C
Corrosion barrier: marine grade seawater-resistant alloy
Maintenance parts: sealed junction boxes, brackets, flanges

Design Principles and Aerodynamic Engineering of WISTRO Units

WISTRO forced cooling units are engineered around fluid-dynamic principles to provide optimum heat dissipation across electric motor stator cooling fins. The streamlined cowl and balanced impeller assembly maintain continuous volumetric delivery with minimal inlet airflow turbulence.

Utilizing heavy-gauge galvanized sheet steel and corrosion-resistant aluminum alloy guarantees structural rigidity when installed on heavy industrial machinery operating around the clock.

Optimization for Inverter-Driven Variable Speed Electric Motors

When industrial drives operate through variable frequency inverters at low rotational speeds, shaft-mounted cooling fans lose their airflow throughput. WISTRO external forced cooling units supply an uninterrupted volumetric flow rate independent of the main motor drive shaft velocity.

This continuous forced ventilation eliminates thermal degradation of motor winding insulation during extended low-speed, high-torque operation.

Multi-Voltage Electrical Configurations and Power Terminal Integration

WISTRO ventilation modules incorporate multi-voltage winding designs that allow one baseline unit to operate reliably across global industrial power grids.

The internal fan motors support single-phase 230V lines with an integrated run capacitor, as well as three-phase industrial supplies from 230V up to 575V. This electrical versatility streamlines project planning for multinational equipment builders.

Compact Geometries and Radial Airflow Solutions for Tight Enclosures

In compact machinery bays where axial intake space behind the motor end shield is obstructed by walls, standard cooling cowls face severe throttling. The specialized WISTRO FLAIR configuration overcomes space limitations through radial lateral intake ports.

This airflow redirection enables flush machine bulkhead installation without sacrificing static pressure or cooling effectiveness.

Environmental Ingress Protection IP66 and Severe Weather Resilience

Standard WISTRO forced ventilation units maintain consistent IP66 ingress protection against industrial dust and heavy water washdown. Combining seawater-resistant alloy structures with protective coatings delivers durable corrosion prevention across demanding industrial sites.

The cooling assemblies perform reliably in maritime terminals, processing plants, chemical facilities and outdoor operating bays.

Hazardous Environment Compliance under ATEX and IECEx Standards

For volatile production facilities in oil, gas, chemical processing and bulk material handling, WISTRO delivers dedicated explosion-proof fan units.

Qualified under international IECEx and European ATEX standards for gas and combustible dust zones, these units incorporate non-sparking impellers, explosion-proof terminal housings and cold-weather construction rated down to -40 °C.

WISTRO Elektro-Mechanik / WISTRO and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of WISTRO Elektro-Mechanik / WISTRO and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.