Fan Datasheets

Model-level technical releases: dimensions, airflow and pressure ratings, speed, electrical data and curves for LONGWELL fan platforms. Use these datasheet posts to shortlist models before requesting full selection support against your duty point.

Compact forward-curved AC blower during design-in checks
By longwell / June 30, 2026 / Engineering Case Studies

What to Check When a STEP File Arrives

A 3D model settles whether the fan fits. It says nothing about whether...

Read More »
Double-inlet forward-curved blower supplied against a superseded fan model
By longwell / June 30, 2026 / Engineering Case Studies

When the Part Number You Have Is No Longer the One We Ship

The model they had was discontinued on paper and unchanged in metal. K...

Read More »
Quiet 24V DC cross-flow fan, 368mm impeller, for HVAC and electronics
By longwell / June 12, 2026 / Engineering Case Studies

Quiet 24V DC Cross-Flow Fan for HVAC and Electronics: 305 m3/h

A request for a STEP file tells you a lot. It means the mechanical des...

Read More »
24V DC cross-flow fan for rack-mounted electronics cooling
By longwell / June 11, 2026 / Engineering Case Studies

24V DC Cross-Flow Fan for Electronics Cooling: 152 m3/h Case Study

A request for two datasheets tells you the design is nearly frozen. It...

Read More »
Drawing and CAD model turnaround for a 300mm cross-flow fan
By longwell / June 5, 2026 / Engineering Case Studies

Sometimes the Deliverable Is a Drawing, Not a Fan

Sometimes the deliverable is a drawing and a CAD model rather than a f...

Read More »
EC axial fan supplied with full design-in support for a condenser
By longwell / June 5, 2026 / Engineering Case Studies

The Engineering Happened Years Before They Wrote In

A design-in request rather than a development one. The interesting eng...

Read More »
620mm cross-flow fan assembly with aluminum impeller and housing
By longwell / May 26, 2026 / Engineering Case Studies

Cross-Flow Fan Assembly Without a Motor: 620mm OEM Kit

The customer wanted the aerodynamics without the motor. Selling half a...

Read More »
AC circular duct fans from 100mm to 315mm for commercial ventilation
By longwell / May 21, 2026 / Engineering Case Studies

Seven AC Circular Duct Fans Qualified for One OEM Range

Seven models, two materials, one supplier. The interesting part is why...

Read More »