Polyurethane Impeller: Drop-In Spare for BF Flotation Machines The impeller is the one part every BF flotation machine will eventually need. This polyurethane impeller is moulded to the BF-8.0 profile for a bolt-for-bolt fit, so you can swap it out in a normal maintenance window and be back on line the same shift. Confirm this is your machine Machine: BF-8.0 self-aspirating flotation machine (8 m³ cell). Position: main impeller on the shaft, below the cover plate. Tip: the BF
