Electrical braking device having:a housing part;an engine part mounted on the housing part;a drive shaft which can be rotated by the drive-train;a parent part screwed to the drive shaft part and moved linearly by rotating the drive shaft part;a piston part in which the parent part is used and which is designed to move a coating by means of the parent part; anda retractor fitted to the parent part in contact with the piston part and trained to initiate the replacement of the piston part.
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