Big Dimensions Require Expertise - RKB Europe - #1

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54 Organi di trasmissione - novembre 2010 BEARINGS Giangiacomo Colleoni and Giulio Bianchi As big size rolling bearings are going to play an essential role in proper operation of complex machinery, their design and production call for wise quality-oriented decisions by the manufacturer, under pain of unexpected faults or, still worse, machine downtimes. Big dimensions require expertise ason, it is a matter of primary importance to know the data of the application where the bearing will be mounted on (specifications, exploitation, technical diagram, load, speed, operating temperature, misalignments, lubrication type, etc.) in order to select the adequate product, mainly in terms of total cost of ownership, thus reducing at the minimum the risk of unsuitable parameters, which can cause serious drawbacks. In the light of the fact that big size bearings are going to carry out a criti- Big size rolling bearings for heavy industry are costly and require long production times and therefore long delivery times. As a result, users are generally anxious about having at their disposal the spare to be used in case of unexpected faults or damages which can lead to extremely long and burdensome machine downtimes when the backup part is not immediately available. For this re- Big size RKB bearings installed on a typical speed multiplicator for megawatt class wind turbines. 10 novembre 2010