De or het scharnierkoppeling?

The correct Dutch article is:

de scharnierkoppeling

Rule Words ending in -ing: almost always de. See the rule

How to use scharnierkoppeling

the scharnierkoppelingde scharnierkoppeling
this scharnierkoppelingdeze scharnierkoppeling
that scharnierkoppelingdie scharnierkoppeling
our scharnierkoppelingonze scharnierkoppeling
your scharnierkoppelingjouw scharnierkoppeling
every scharnierkoppelingelke scharnierkoppeling
which scharnierkoppeling?welke scharnierkoppeling?
a big scharnierkoppeling / the big scharnierkoppelingeen grote scharnierkoppeling, de grote scharnierkoppeling