Fläkt Woods Long Casing JM Extractor Fan (Single Phase)

JM Axial Flow Fans

Our Woods JM Axial Flow Fans deliver exceptional aerodynamic efficiency—up to 77%— while maintaining low specific fan power (SFP). These performance advantages are achieved through the use of aerofoil-section impeller blades and an aerodynamically optimised hub design, both engineered to deliver maximum efficiency at peak operating conditions.

Key Features

• High-Efficiency Impeller Design
  Minimises SFP values, reducing energy consumption and operating costs.

• Adjustable Pitch Impeller
  Allows precise performance adjustment to meet specific system requirements.

• Installation Flexibility
  Available in short- or long-cased configurations to suit different installation needs.

Precision Engineering

Each impeller is precision die-cast from aluminium and X-ray inspected using real-time radiography (ASTM E-155) to ensure structural integrity and consistent quality.
Impellers are dynamically balanced for smooth, vibration-free operation. The hub and clamp plate assembly enables manual adjustment of blade pitch angle, providing performance flexibility across a wide range of applications.

High Temperature (HT) Versions

A High Temperature (HT) variant is also available, designed to extract heat and smoke quickly and effectively in the event of a fire. This model is certified to operate at 400°C for two hours, ensuring reliability under extreme conditions.

Product Reference Example

63JM/20/4/6/36

• 63 – Fan impeller diameter (cm)

• JM – Fan type

• 20 – Impeller hub diameter (cm)

• 4 – Nominal 4-pole motor speed

• 6 – Number of blades

• 36 – Blade pitch angle (degrees) for required duty

View Product Data Sheet