Knife attachment arrangement for mower knives driven in an oscillating manner

A knife attachment arrangement for oscillatingly driven mower knives, comprising

• a shaft defining a first longitudinal axis and having a receiving space;
• a mower knife drive pin engaging in the receiving space and being detachably connected to the shaft, the mower knife drive pin extends axially with respect to the first longitudinal axis beyond the shaft and defines a second longitudinal axis being radially offset with respect to the first longitudinal axis, wherein a wall of the shaft that delimits the receiving space has a first support face curved in a circumferential direction, and wherein a head bearing holding area of the mower knife drive pin engages in the receiving space and has a first contact face that is in contact with the first support face and is curved opposite to the first support face;
• and
• a connector for detachable connection of the mower knife drive pin to the shaft,
• wherein an undercut is formed in the wall delimiting the receiving space and the head bearing holding area of the mower knife drive pin has a collar engaging in the undercut,
• wherein the undercut is formed as a groove in the wall, the groove extends radially with respect to the second longitudinal axis, and
• wherein the connector comprises a screw, which protrudes through a first bore that is formed in a top bearing holding area of the mower knife drive pin into a second bore that is formed in the wall.