To achieve maximum transport performance, capacity calculations for modern lift systems take into account not only travel speed but also the shortness of the door opening and closing phases.
It is for this reason that MEILLER has introduced its new high-performance SPRINT® 4.0i door, which has been specially developed for use in systems operating at speeds of in excess of 4 m/sec.
The most distinctive feature of this MEILLER door series is that it is the first to employ rollers of 90 mm in diameter together with kicking rollers of a dia-meter of 35 mm. The large rollers are low-wearing and very smooth running, because they perform approximately two revolutions per door cycle only (with a CDW of 1,100 mm). The high performance MiDrive® door drive enables door speeds of approx. 1.0 m/sec., which translates to an opening time of less than 1.3 seconds for a twopanel centre-opening door (CDW 1,100 mm, CDH2,300 mm).