Patent ID: 8105132

Claim:
An eccentric grinder, with a drive ( 3 ) located in a housing ( 2 ), the drive shaft ( 5 ) of which drives a support shaft ( 7 ) of a grinding plate ( 8 ) via an eccentric bearing ( 6 ), a friction braking device ( 15 ) comprising a friction braking element ( 17 ) located on the housing ( 2 ), designed as a friction ring, and a friction surface ( 16 ) on the grinding plate ( 8 ), wherein the friction surface ( 16 ) is conical in design and configured to be acted upon with a frictional force by the friction braking element ( 17 ), wherein the friction surface ( 16 ) is located on a contact component ( 21 ), which contact component ( 21 ) is designed to be separate from but connected to the grinding plate ( 8 ), and made of a different material than the grinding plate ( 8 ), and wherein the friction surface ( 16 ) is arranged on the grinding plate ( 8 ) to slope downward in a radial direction, from the inside to the outside, relative to a horizontal plane ( 20 ), which is perpendicular to the rotation axis ( 11 ) of the grinding plate ( 8 ) thereby forming a taper angle (α) of at least 5° relative to the horizontal plane ( 20 ).