A public transport celebrity
Not many trams are lucky enough to acquire an online fan base. One of the lucky few is the TMK2200 low-floor tram, produced by the Croatian company Končar. The TMK2200’s most loyal fans on YouTube refer to it as “the best tram on earth” and the “the prettiest tram ever” and its success story will potentially continue around the globe. Cities in Finland, Bulgaria, Serbia and Australia are currently considering the purchase of the TMK2200.
In Zagreb alone the trams transport more than 200 million people a year. 500,000 of those use them every day. Končar’s trams need to be in service for up to 35 years. The wheels of a public tram need to sustain loads of up to 60 tons. Each component of those wheels must be safely locked and secured in place. One of the steps of the wheel assembly involves locking the grounding wire bolts. Each wheel consists of three segments, the inner part being made of rubber which is an electrical insulator. Therefore, a bypass made of wire is necessary to ground the tram. This is an extremely important technical and safety issue. For each tram, only 5% of repair and maintenance time is allowed. To achieve this level of reliability, the manufacturing in Zagreb relies on Loctite products. High-strength threadlocker Loctite® 2701 offers maximum vibration resistance on the stainless-steel bolts and these are only some of the “precious drops” used on some of the most important parts of the tram.
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