The W4-68 high-temperature fan is suitable for transporting high-temperature gases that are non-corrosive, non-spontaneous, and have a maximum temperature of no more than 400°C. If the gas contains large amounts of dust, a dust removal device with a dust removal efficiency of not less than 85% should be installed in front of the fan inlet to extend the service life of the fan. Those with equivalent air intake conditions and suitable performance can be used. The impeller material is made of heat-resistant stainless steel and has passed static and dynamic balance and overspeed tests. The transmission group consists of main shaft, water-cooled bearing box and other components.