Fan Manufacturing

Inside fan production: coil winding, rotor magnetisation, impeller forming and welding, balancing, run-in test, salt spray and life testing.

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By longwell / April 29, 2026 / Engineering Case Studies

1236 m3/h EC Centrifugal Fan for Tight HVAC Enclosures

An engineering review on specifying a 190W EC centrifugal fan for a re...

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longwell-wi-6980887054-project
By longwell / April 29, 2026 / Engineering Case Studies

Integrating a 25 m/s Industrial Air Curtain

Learn why direct-wiring a magnetic door switch to a 3.3 kW industrial ...

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By longwell / April 29, 2026 / Engineering Case Studies

Cooling Outdoor Telecom Enclosures with a 24V DC Centrifugal Fan

See how a 24V DC centrifugal fan solved tight size constraints, high s...

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By longwell / April 29, 2026 / Engineering Case Studies

24V Paired DC Cross Flow Fan System for Tight Spaces

Learn how we built a paired DC cross flow fan system. This exact 24V s...

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longwell-lwad17251hh-23-projec
By longwell / April 29, 2026 / Engineering Case Studies

Adding PWM Speed Control to a 48V Telecom Rack Fan

Read how we modified a standard 48V DC cooling fan to include 20kHz PW...

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longwell-wi-6980294928-project
By longwell / April 28, 2026 / Engineering Case Studies

110V Portable Explosion-Proof Fan for High-Pressure Ducting

Read how we engineered a custom 110V 60Hz portable explosion-proof fan...

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longwell-wi-6980136382-project
By longwell / April 28, 2026 / Engineering Case Studies

Sizing a 6×20 Activated Carbon Filter for Air Exhaust

Learn how to size a 6x20 activated carbon filter. First, we map out th...

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longwell-lwaa4d500s-5meb-18-pr
By longwell / April 28, 2026 / Engineering Case Studies

Upgrading a 500mm IP55 Axial Fan for a -30°C Outdoor Cabinet

Learn how we upgraded a 500mm IP55 axial fan for a harsh outdoor enclo...

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longwell-wi-6979404524-project
By longwell / April 27, 2026 / Engineering Case Studies

8-Inch High-Speed Metal Exhaust Fan for Factory Ducts

See how we engineered an 8-inch high-speed metal exhaust fan deliverin...

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longwell-wi-6979294887-project
By longwell / April 27, 2026 / Engineering Case Studies

210mm Axial Fan Assembly: Downsizing an AC Motor

We replaced an oversized 60W motor with a 25W unit in a 210mm axial fa...

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