Day: August 10, 2026

AC vs EC fan variants of a cross-flow platform built for one order
By longwell / August 10, 2026 / Engineering Case Studies

We Proposed All-EC. The Customer Was Right to Refuse.

Consolidating on one motor platform would have simplified our producti...

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Axial blower stator with a copper motor winding, specified explicitly
By longwell / August 10, 2026 / Engineering Case Studies

Why the Customer Wrote “100% Pure Copper” on the Order

Nobody specifies what they trust to be there. When a procurement team ...

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A 450mm axial fan sized for low fan power consumption at 3,899 m3/h
By longwell / August 10, 2026 / Engineering Case Studies

A 138 Watt Ceiling Designed This Whole Fan

The airflow figure looks like the hard requirement. The power cap is w...

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LONGWELL RLM series commercial centrifugal plug fan
By longwell / August 10, 2026 / Engineering Case Studies

RLM series Commercial Centrifugal Plug Fans for HVAC OEM

Delivering 700 Pa static pressure and up to 9000 m³/h airflow, these c...

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External rotor motor driving an 80mm EC cross-flow impeller
By longwell / August 10, 2026 / Engineering Case Studies

The Motor That Wears Its Rotor on the Outside

The whole assembly had 120 millimetres to live in, electronics include...

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