Bearing Application: Pusher Centrifuges
Ferrum AG produces centrifuges for various industries. Based on the successful Sulzer Escher Wyss construction, Ferrum has consistently geared its centrifuges to the needs of its customers. For example, a pusher centrifuge was developed specially for obtaining nitrocellulose from a suspension consisting of aggressive acids. During operation, the oscillating pusher unit is moved backwards and forwards by 50 mm and up to 60 times per minute to conduct the nitrocellulose extracted from the suspension to the discharge unit.
Bearings used for the pusher shaft are GGB-CSM® metal bushings. The sliding materials for the bearings are produced using a powder metallurgy process with a homogeneously distributed solid lubricant. These materials can be manufactured to customers' specifications.
For Giuseppe Scalzo, Centrifuge Technology Manager, the GGB-CSM® self-lubricating plain bearings are the optimum solution, "Our customers in the chemical industry run continuous processes and expect a service life of several decades from our pusher centrifuges. Operating interruptions due to machine downtime are devastating and lead to substantial follow-up costs. GGB-CSM® plain bearings have stood the test of time very well, which means they only need to be replaced at scheduled service intervals, approximately every two to three years."
- G. Scalzo, Centrifuge Technology Manager