This arrangement has a shaft and bearings supporting an overhung impellor. The bearings and shaft are outside of the airstream. The hub of impellor protrudes from the casing. The fan unit is mounted onto a channel frame, along with motor and slide rail unit & belt drive. The drive guard and support are neatly integrated with the fan unit and channel base. The channel base comes in 2 variants, one with outriggers and one without. Outriggers enable easy drilling of foundation holes without having to mark and then move the fan.
There is a bung welded to the drive side of the casing, maximum air temperature is 350ºC (50mm bung) – 450ºC(100mm bung). The impellor can be removed from inlet side only.The motors however need to be protected from any heat by the customer. Dual drive option shown, for run and standby motors.