Patent ID: 7775959

Claim:
A folding device for producing a second longitudinal fold in products of a rotary press, comprising: a folding drum comprising two opposing side walls and a carrier connected to the folding drum at a location between said side walls, wherein said carrier has a small material thickness in a longitudinal direction of said folding device and a large area extending approximately over an entire cross section of an interior of said folding drum in a transverse direction of said folding device; a folding-blade shaft having two ends, each of said two ends of said folding-blade shaft being rotatably mounted in a respective one of said sides walls in said folding drum, said folding-blade shaft having at least two folding-blade carriers for holding folding blades which are spaced apart from one another in a region proximate said carrier by a distance smaller than 10 millimeters; a pair of bearings arranged in said side walls of said folding drum, said ends of said folding-blade shaft being mounted respectively in said side walls by said pair of bearings; at least one further bearing arranged in said carrier, wherein said folding-blade shaft is further rotatably supported in said carrier by said at least one further bearing between said ends of said folding-blade shaft, wherein said pair of bearings and said at least one further bearing comprise self-aligning roller bearings.