Obiettivo The most dominant obstacles preventing the full use of High Speed Cutting (HSC) are currently the performance limits of spindle bearing systems due to the speed and service limitations of conventional rolling bearings. Since angular contact ball bearings are most suitable for high speed applications the Brite EuRam project EuroBearing aimed to increase the speed and lifetime of this bearing type by combining ceramic balls with coated races. As a result of this project, the speed characteristic has been increased by a factor of 1.4. However, cylindrical roller bearings show several advantages in comparison with angular contact ball bearings: apart from the higher radial stiffness and the lack of boring, cylindrical roller bearings are excellent movable bearings because both the inner and the outer ring can be mounted tightly. Due to the high friction between rollers and rim and because of lubrication problems at very high speeds, the speed characteristic is limited to approx. 1.0 106 mm/min, which is about 60% of the speed characteristic achievable with conventional angular contact ball bearings. For this reason, cylindrical roller bearings are rarely used for high speed applications. Nevertheless, the advantages of this bearing type has been realized by Far East and American competitors resulting in significant higher market share due to their intensive R&D work carried out in recent years. In order to compensate for this delay in European bearing development, the REFINE project aims to develop reliable environmentally friendly spindle bearings for high speed applications. The experience of EUROBEARING will be exploited in REFINE to further optimise the tribological systems of angular contact ball bearings and to develop PVD coatings for cylindrical roller bearings. The combination of wear resistant hard coatings and solid lubricant coatings (e.g. diamond like carbon DLC) is a new approach which offers the capability to change the tribological characteristics. Simultaneously, new environmentally friendly lubricants will be developed and adapted to the new tribological system. High speed spindles and high frequency spindles with angular contact ball bearings as non movable front bearings and cylindrical roller bearings as movable rear bearings will be built and tested. This configuration combines high radial stiffness and the capability to compensate for thermal deformations with an optimal movable bearing. As a main result the speed limit and service life of this kind of spindle bearing system will be increased by a factor of about two so that it will become a preferable system not only for medium but also for high speed application. The consortium comprises experts in the field of coatings, tribology, roller bearings, spindle bearing design and machine tools. 6 industrial companies and 3 research organisations coming form 5 different member states are involved. Campo scientifico engineering and technologymechanical engineeringtribologylubricationengineering and technologymaterials engineeringcoating and films Programma(i) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Argomento(i) 0101 - Incorporation of new technologies into production systems Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Cemecon - Ceramic Metal Coatings GmbH Contributo UE Nessun dato Indirizzo 21,Talbotstrasse 52068 Aachen Germania Mostra sulla mappa Costo totale Nessun dato Partecipanti (8) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto ARISTOTLE UNIVERSITY OF THESSALONIKI Grecia Contributo UE Nessun dato Indirizzo Research Committee of the Aristoteles University o 54006 THESSALONIKI Mostra sulla mappa Costo totale Nessun dato Fundacion Tekniker Spagna Contributo UE Nessun dato Indirizzo 20,Avda. Otaola 20600 Eibar Mostra sulla mappa Costo totale Nessun dato Gamfior SpA Italia Contributo UE Nessun dato Indirizzo Corso Giulio Cesare 424 Interno 29 10156 Torino Mostra sulla mappa Costo totale Nessun dato Krafft Spagna Contributo UE Nessun dato Indirizzo S/N,Ctra. Urnieta 20140 Andoain Mostra sulla mappa Costo totale Nessun dato Meccanica Nova SpA Italia Contributo UE Nessun dato Indirizzo Via Roma 54/A 40069 Zola Predosa Bologna Mostra sulla mappa Costo totale Nessun dato NICOLAS CORREA SA Spagna Contributo UE Nessun dato Indirizzo 09007 BURGOS Mostra sulla mappa Costo totale Nessun dato Rheinisch-Westfälische Technische Hochschule Aachen Germania Contributo UE Nessun dato Indirizzo 53B,Steinbachstrasse 52056 Aachen Mostra sulla mappa Costo totale Nessun dato SKF RESEARCH AND DEVELOPMENT COMPANY B.V. Paesi Bassi Contributo UE Nessun dato Indirizzo 16,KELVINBAAN 16 3439 MT NIEUWEGEIN Mostra sulla mappa Costo totale Nessun dato