K40 Energy-Saving Explosion-Proof Mine Ventilation Fan for Underground Tunnels

K40 series is a single-stage axial main ventilation fan (main fan) for mines. It is designed for underground tunnels, metal & non-metal mines, and long tunnel ventilation. It can be installed on surface or underground, working as main fan or auxiliary fan, and supports multi-fan combined operation.

Equipped with adjustable twisted airfoil blades, the blade angle can be modified on site to match changing mine air resistance. Built-in steady flow ring ensures hump-free performance curve and anti-surge feature, safe and stable across all working conditions. Direct drive motor design reduces transmission failure points, easy maintenance, low noise and wide high-efficiency zone with remarkable energy saving.

The fan assembly includes inlet cone, main casing, impeller, explosion-proof motor and diffuser. Sizes from No.7 to No.26, multiple speeds available. Air flow: 2.0~164.2 m³/s, total pressure: 35~1563 Pa, power range 7.5~250 kW. Reversing device and control cabinet are optional for emergency air reversal.