3. Additional polymer product complements established IROX® coating by providing improved seizure resistance with steel crankshafts
Federal-Mogul Powertrain is extending its crankshaft bearing portfolio with a new high performance polymeric coating, IROX® 2, that will debut at the 2017 IAA show in Frankfurt, Germany. The newly developed product provides enhanced seizure performance with steel crankshafts. IROX 2 joins Federal-Mogul’s family of IROX technologies which reduce friction and improve the wear resistance and fatigue limit of the bearings used in today’s highly evolved downsized engines.
“IROX was developed for crankshafts with a standard surface finish, whereas IROX 2 is intended for crankshafts with extra smooth finish running with thinner oils,” explained Gian Maria Olivetti, Chief Technology Officer, Federal-Mogul Powertrain. “Compared to aluminum bearing surfaces, both IROX and IROX 2 provide reduced friction and greater wear resistance, whereas in comparison to IROX, IROX 2 features further enhanced seizure performance, so we can offer each customer the optimum formulation for their specific application. By reducing friction, the innovative bearing coatings also help to lower fuel consumption and CO2 emissions.”
The bearings have an overlay that is a PAI (Polyamide-imide) polymer resin binder containing a number of additives dispersed throughout the matrix. Developing IROX 2 involved modification of the binder system on a molecular level, coupled with subtle changes to the composition. For example, compared to IROX, IROX 2 contains no silicon carbide particles and has a higher content of a synergistic mixture of solid lubricants.