Shandong Bofeng Fan Co., Ltd.
Ventilation units (FKCDZ, No.15 - No.40) by Shandong Bofeng Fan Co., Ltd.
The FKCDZ series is a high-performance counter-rotating fan refined from conventional mine units. Four hub ratios (0.40 / 0.45 / 0.54 / 0.62) with 4–12-pole motors cover a broad pressure–flow range. A flow-stabilization ring removes stall humps, while twisted aerofoils boost efficiency and suppress noise. Its compact, direct-drive construction eases upkeep and fits surface or underground duty as main, auxiliary, or multi-stage ventilation in non-coal mines.