Center-free large roller bearing

A heavy-duty open-center large roller bearing for machine housings of wind-powered arrangements, comprising:

• two races;
• roller elements rolling between said races;
• a brake for damping rotational oscillations of the bearing and having at least one braking surface secured to one bearing ring on one of said races and having a brake-lining secured non-rotatingly to another bearing ring on the other one of said races;
• pressing means for pressing said brake-lining against said braking surface and having an axis;
• means for adjusting said pressing means from the outside;
• a conical tip on said pressing means;
• two brake jaws on opposite sides of said conical tip and forced by said conical tip in a continuous recess in said one bearing ring and normal to said axis of said pressing means;
• two opposite braking surfaces in said recess, said two brake jaws being pressed apart and against said two opposite braking surfaces in said recess by said pressing means through said conical tip, said two brake jaws being pressed apart and against said two opposite braking surfaces in said recess by said conical tip.

A heavy-duty open-center large roller bearing for machine housings of wind-powered arrangements, comprising:

• two races;
• roller elements rolling between said races;
• a brake for damping rotational oscillations of the bearing and having at least one braking surface secured to one bearing ring on one of said races and having a brake-lining secured non-rotatingly to another bearing ring on the other one of said races;
• pressing means for pressing said brake-lining against said braking surface and having an axis;
• means for adjusting said pressing means from the outside;
• a wedge-shaped tip on said pressing means;
• two brake jaws on opposite sides of said wedge-shaped tip and forced by said tip in a continuous recess in said one bearing ring and normal to said axis of said pressing means;
• two opposite braking surfaces in said recess, said two brake jaws being pressed apart and against said two opposite braking surfaces in said recess by said pressing means through said wedge-shaped tip, said two brake jaws being pressed apart and against said two opposite braking surfaces in said recess by said wedge-shaped tip;
• said recess having a U-shaped cross-section;
• a seal between said roller elements and said brake jaws for sealing a gap between said races;
• spring means for forcing said pressing means between said brake jaws;
• said brake jaws being non-rotationally connected to said other bearing ring through said pressing means;
• and travel take-along elements in said other bearing ring.