Smart Bolts with Temperature Sensors for SSAB

Since the beginning of the year, Väte Trafik has been handling the shunting of SSAB’s steel trains in Borlänge and Oxelösund. This is Väte Trafik’s largest assignment to date, and four fully modernized SM42-6Dg locomotives have been leased to carry out the work. Railway Metrics and Dynamics is now equipping the locomotives with PMUs and smart bolts.RMD Developing Fully Approved SystemThe locomotives are currently used exclusively for shunting, but there is also interest in getting them approved for mainline operations. To enable that, improved hotbox detection is needed for the wheel axle