The present invention relates to the device for supporting a disc-shaped guard for mower blades, and more particularly, to a technique by which the rotation of the disc-shaped guard is prevented but the disc-shaped guard is still configured to be rotated a predetermined amount when the disc-shaped guard is under rotating pressure. The configuration is as follows. The present invention includes a disc-shaped guard (10) on which a blade (A) is radially formed, a cover plate (15) which covers the center of the disc-shaped guard (10), and a stop portion (19) in which one side of a supporting member (16) is supported at the center of the bottom surface of the cover plate (15) in such a manner that the cover plate (15) spins with no traction and the other side of the supporting member (16) is supported by a fastening band (18) which is fixed to a working table (17) through the bottom surface of the disc-shaped guard (10) and is stopped by the supporting member (16) on the disc-shaped guard (10) so that the disc-shaped guard(10) is not rotated. The stop portion (19) is configured to be detached from the supporting member (16) when the disc-shaped guard (10) is rotated a predetermined amount.La présente invention concerne un dispositif pour supporter un doigt en forme de disque pour des lames de faucheuse et, plus particulièrement, une technique par laquelle la rotation du doigt en forme de disque est empêchée, mais le doigt en forme de disque est encore configuré pour être tourné à un degré prédéterminé lorsque le doigt en forme de disque est sous laction dune pression rotative. La configuration est la suivante. La présente invention concerne un doigt en forme de disque (10), sur lequel une lame (A) est radialement formée, une plaque de revêtement (15) qui recouvre le centre du doigt en forme de disque (10) et une partie butée (19), dans laquelle un premier côté dun élément de support (16) est supporté au centre de la surface inférieure de la plaque de revêtement (15) de t
