The new series from Moventas Santasalo, enhancing the design layout of the Yankee cylinder drive unit, is based on a new technological solution to meet the requirements of today's high-speed tissue machines.The pre-load arrangement of the main bearing is a new design that Moventas Santasalo has developed to optimize load distribution. This stabilizes the running of the Yankee cylinder drive unit, and consequently extends bearing lifetime. Additionally, the pre-load arrangement of the main bearings is adjustable, for instance in situations when a unit is used as a spare reducer for opposite-handed tissue machines.The new series, running with two main motors, will be available in three different sizes. All feature maintenance-free labyrinth seals. The hollow shaft inside diameter can be up to 540 mm. The new symmetrical housing is modern and service-friendly, as well as easy to fit with different auxiliaries and instrumentation, according to the company. /AA