LONGWELL ADH 900-K fan assembly specification
On May 18, 2026, LONGWELL opened a project to provide an engineering assembly drawing for a single ADH 900-K double-inlet centrifugal fan unit without an integrated motor. The customer requirement specified a complete assembly set—including the impeller, scroll housing, bearings, and shaft—to be retrofitted and paired with an external 30 kW motor. The drawing required itemized identification of all included components.

ADH 900-K dimensional data summary
LONGWELL engineering completed the standard ADH 900-K technical specification drawing on May 19, 2026. The key structural dimensions specified in the drawing output are summarized below:
| Parameter Label | Drawing Value |
|---|---|
| Model Designator | ADH 900-K |
| Overall Width (A) | 1408 mm |
| Overall Height (B) | 1648 mm |
| Housing Width (C) | 1130 mm |
| Housing Height (E) | 971 mm |
| Inlet Dimension (F) | 604 mm |
| Inlet Frame Dimension (G) | 800 mm |
| Base Frame Height (H) | 1180 mm |
| Mounting Base Width (J) | 1319 mm |
| Flange Width (K) | 60 mm |
| Frame Width (M) | 1570 mm |
| Overall Base Width (N) | 1250 mm |
| Shaft Diameter (d-g6) | 60 mm |
| Keyway Slot (LxV) | 17×22 mm |
Engineering scope and deliverable
This project scope is limited to the engineering technical specification and dimensional drawing output. LONGWELL engineering finalized the detailed ADH 900-K assembly drawing on May 19, 2026, for fit and mounting evaluation.
Download ADH 900-K Engineering Drawing (PDF)

Discuss a similar requirement
If you require bare-shaft double-inlet centrifugal fan assemblies, custom shaft dimensions, or technical drawings for motor retrofits, contact LONGWELL engineers. Send your required operating parameters, spatial constraints, and motor power rating through our Contact Page or select components using the LONGWELL Fan Selector Tool.
Choose the right centrifugal fan
Longwell manufactures 1,146 centrifugal fans in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.











