it has powerful torque , can be started with load on and can also be started or stopped very quickly,

   The motor is simply-construced,small-sized,light-weighted and easy to operate and service.

   It can be used in any bad condtions or any  bad weather.

   It can be  self-protected  from overload. when overload occurs, the motor can slow down its speed till the overload is relieved and then restart.

    It can counterrotate if necessary( just  change the direction of  the incoming air ) and it takes a very short time to get counterrotated  at a high speed  ,still with load on.

    It is widely used in minings,oilfields,construction sites,metallurgy,paper-making ,pharmacy,chemical industry,melting etc.